97 Replies Latest reply on Oct 29, 2018 6:14 AM by Nick Birkett-Smith

# The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

https://www.engineersrule.com/impossible-modeling-challenges-part-5-volume-limit-mate-keep-prisoner-jail/

Hello SOLIDWORKS Power-Users and welcome to the 7th WPUC!

Other than having fun solving riddles, the goal of this week's WPUC is the same as last week's: facilitate through brainstorming the finding of new techniques for the benefit of the SOLIDWORKS Community.

Hopefully we will:

1. Identify areas where SOLIDWORKS' functionality needs enhancements
2. Design workarounds to overcome the current lack of functionality
3. Submit new ERs or promote existing ERs that are relevant to this WPUC topic.

During the first WPUC, we found out the need for boundary mates. What about volume mates? How can you limit a component's movement in a given volume, while preserving all other degrees of freedom? Let's think about that this week.

For eternal glory and 1000 points, provide the best solution to this problem:

1. Watch this video: SOLIDWORKS 7th Weekly Power User Challenge (June 2nd, 2017): Simulate a Volume Mate - YouTube
3. Convert both to SOLIDWORKS format
4. Start a new assembly
5. Insert Jail in the assembly, fix it and make it virtual
6. Insert Prisoner in the assembly and make it virtual
7. Create a mating scheme that would keep the Prisoner confined in the Jail.
8. The Prisoner can go anywhere inside the Jail

The first solution that meets these criteria would win 1000 points.

The first solution that would not use limit mates wins 1000 points.

The solution with the smallest number of mates wins 1000 points.

The best solution (my pick) would win 1000 points.

If the solution is out-of-this-world, the contestant will be awarded 2000 points and be proclaimed a SOLIDWORKS DEMIGOD.

Good luck!

-----------------------------

Obsolete Placeholder:

In order to give as many power-users a chance to win, and considering that our friends from the US observe Memorial Day today (long weekend), we will wait for everyone to return to work before posting the problem.

So, bookmark this thread and keep an eye on it Tuesday morning (May, the 30th) Be the first with a great solution and you will become a WUPC winner.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in a Cage)

Setting us up for next week, cool

Steve C

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in a Cage)

I'm already feeling trapped!!  You are really making this personal, Alin Vargatu!!

Is it time to go home yet???

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Dennis Dohogne wrote:

I'm already feeling trapped!! You are really making this personal, Alin Vargatu!!

Is it time to go home yet???

I will be very busy next week, so I had to prepare the challenge early (needed the link for this thread created). The video has been recorded, the Parasolid files saved, just waiting for Monday morning to hit send.

This challenge will be the easiest so far. Need to find workarounds that could simulate a Volume mate.

Have a nice weekend.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

time to research!

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

I'm going shopping for a Rita Hayworth poster a'la The Shawshank Redemption . . . oh wait, are we supposed to stay IN the cell . . . ?

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

I'm standing in line at the Houdini Tomb, looks rather long, he will be recalled shortly and I expect the people in front of me will only be asking about the 7th Weekly Challenge and possibly some other escape trivial stuff, not sure if I'll get there today, lines pretty long....  I'll keep ya all posted...

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

That is the exact image I was going to post!

Nicely done!

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Classic one Rick!

Dave.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Interesting challenge.  5 mates.  You did mention preserving "all degrees of freedom" in the need for a volume mate, but that doesn't seem to be a requirement of the challenge.  An additional "helper" empty component would be needed with this scheme to preserve all 6 DOF of the prisoner component.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

If you have time, please enter that solution, too, Josh.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Alin,

The additional solution with the "helper" component is completely trivial.  Basically the empty "helper" component would have the exact same mates as the prisoner has now.  Then the prisoner component would have a origin-origin coincident mate to the helper.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Love the way you are using the angle limit mate to define the boundary!

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Really want to look at how you did it, but can't open. Pls save as 2016.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Sorry... No can do. I only have 2017.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Really want to look at how you did it, but can't open. Pls save as 2016.

If you can wait until the end of the week, the best solutions will be recorded in video format.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Added one more 1000 point award for the first solution that would not use limit mates.

You can can make a ton of points this week!

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Hello All broke the assem.

Tried to add distance mate which threw an error, even though it was the only mate, deleted and this is whats left.

No mates,

yellow mate

Ctrl B no fix

Ctrl Q no fix

????

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Save, close and reopen?

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Save, close open no fix.

I think i will start again.

Also upon making first component virtual, is it normal to not clearly be able to select faces.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Q. Virtual component bug

If you start the assem and tick make virtual as you insert component, you can select faces properly.

If you start assem by just clicking green tick and then RMB in feature tree and make virtual you cannot highlight faces you select.

this is on 2015 SP5

do others have this same dilemma.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Ned,, I just tried that with 2015 SP2.1 and experienced the same thing until I did a Ctrl+Q. Then could select faces as expected.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Dennis Bacon wrote:

Ned,, I just tried that with 2015 SP2.1 and experienced the same thing until I did a Ctrl+Q. Then could select faces as expected.

Same here (in SW 2015 SP5.0)

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Ahh good old Ctrl Q fixes it again.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Ned Hutchinson wrote:

Q. Virtual component bug

If you start the assem and tick make virtual as you insert component, you can select faces properly.

If you start assem by just clicking green tick and then RMB in feature tree and make virtual you cannot highlight faces you select.

this is on 2015 SP5

do others have this same dilemma.

Yes, I was able to reproduce the problem in SW 2015 SP5.0. No problem in SW 2017 SP3.0.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Hello everyone,

Here is my solution with no limit mates (distance or angle) probably it's not the prettiest but this shows how determined I was

By the way, the file has two configurations the second accounts for an edge condition but more sluggish.

Edit: as per Dan Pihlaja request SW version is 2017
Best Regards

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Hello everyone,

Here is my solution with no limit mates (distance or angle) probably it's not the prettiest but this shows how determined I was

By the way, the file has two configurations the second accounts for an edge condition but more sluggish.

Best Regards

Very nice, Muhammad. Wow, Path Mate!!! Who would have thought???

One little glitch, though. For some reasons, in the first configuration, when you drag in 3D, the sphere can jump to the alternate solution:

The second one is really interesting. Nice way to chain the prisoner. He needs to master his chain shackle system if he wants to reach any point of the jail.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

"One little glitch, though. For some reasons, in the first configuration, when you drag in 3D, the sphere can jump to the alternate solution:"
That's why I needed to add the other part and mate (making the other configuration)

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Here it is

no limit mates.

Only seems to come out of box if you drag it really hard to flip tangents.

Edit: sorry comes out box at 1 point.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Ned Hutchinson wrote:

Here it is

no limit mates.

Only seems to come out of box if you drag it really hard to flip tangents.

Edit: sorry comes out box at 1 point.

Wow, this is spectacular!!! Thanks, Ned! Even if the prisoner is able to escape, this is one heck of a design for a prison!!! Scary!

What else can you do to prevent the prisoner from escaping?

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Here Is the updated version 2

If hes a nice relaxed prisoner he will stay in.

But when he gets angry he can break out.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Hello all....

If you wouldn't mind, could all of you who posted solutions please edit your posts and add the version of Solidworks that you used?  Thanks

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Dan, I know this is important to you...

But...

Why not add the SW Last Saved With column to Windows Explorer?

Works like a charm.

I save as the files from this Forum to a Temp folder, Open Windows Explorer (and leave it open all day) and after extracting files from ZIP I look before opening.

Peace Brother.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Rick Becker wrote:

Dan, I know this is important to you...

But...

Why not add the SW Last Saved With column to Windows Explorer?

Works like a charm.

I save as the files from this Forum to a Temp folder, Open Windows Explorer (and leave it open all day) and after extracting files from ZIP I look before opening.

Peace Brother.

That is awesome!  I didn't even know that this existed.   Thanks Rick.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Rick Becker wrote:

Dan, I know this is important to you...

But...

Why not add the SW Last Saved With column to Windows Explorer?

Works like a charm.

I save as the files from this Forum to a Temp folder, Open Windows Explorer (and leave it open all day) and after extracting files from ZIP I look before opening.

Peace Brother.

Thanks for the tip!

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

OK, here is my submittal:

No limit mates.

However, I will note that if I slam the prisoner around the walls too much, then, in his rage, he develops the ability to teleport and can "flip" outside for a second.  But he always goes back in.  Apparently he has Recidivism.  Recidivism - Wikipedia  LOL

Anyway, here it is:

EDIT:  LOL, I didn't take my own advice and put the Solidworks version here.

SW 2015 SP5

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Nice.

So you let him breath a bit through the bars, close to that edge:

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

OK, fixed.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Nice, Dan.

One observation: this is a very nervous prisoner. Very jumpy. And I believe he is scared of something around the middle edge. Do you have zombies there?

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Alin Vargatu wrote:

Nice, Dan.

One observation: this is a very nervous prisoner. Very jumpy. And I believe he is scared of something around the middle edge. Do you have zombies there?

Yeah, there is one Width mate that keeps flipping on me.

I investigated and couldn't figure it out.  (I had some tangent mates inside the prisoner, so I changed them to distance mates instead, but that didn't help).

In the end, I deleted and recreated the width mate that was flipping and the "flipping" behavior is no longer happening.  Yay!!

Apparently all the zombies ran away.

Attached is the updated try 3.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

He could have bipolar - it might come back

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

I added one more 1000 point award for the solution with the fewest mates.

Someone will be rich on Friday!

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Rich - what's that??  -

I tried something different that possibly someone can expand, All I got is a fence runner, he's continually looking for holes to escape, to see all possible movement do a (4) screen view setup...

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

John Stoltzfus wrote:

Rich - what's that?? -

Rich in points and prestige.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

So far, no power-user has won this contest three times.

Let's see who will be the first one with three wins.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

attached

no limit mates

prisoner responding to rehabilitation and is much happier now

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Roland Schwarz wrote:

attached

no limit mates

prisoner responding to rehabilitation and is much happier now

Wow! ... and seems like you can remove one component and one mate. You can get down to three mates only!!!

I really like this solution, because it seems to be the most general one. It would work with a jail of any shape that has 2 parallel planar walls. A.M.A.Z.I.N.G.!!!

Correct me if I'm wrong, but because the loft is not planar (kudos for using the technique from WPUC1), it means the sphere cannot touch one side of the jail (concave) and slightly penetrates on the other side (convex). Not a biggie.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Roland Schwarz Excuse me for cheating and using your own solution

P.S. Don't worry about your buddy I do treat him nicely and he is even happier now

Alin Vargatu You gave the idea to get rid of one component and get them only to three mates now they are just two but with cheating again (as long as no one rotates the hidden component and we just move the prisoner we are good)

SW version 2017

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

(as long as no one rotates the hidden component and we just move the prisoner we are good)

Possibility to bribe the Guard could be a factor

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Alin,

Plus it doesn't quite go into the corners as there are very small fillets in the corners of the surface but Roland Schwarz's solution is brilliant as you said. This was how I started trying to find a solution, Pin in Slot method, to the problem but it wasn't as elegant as Roland Schwarz's & kept breaking out & rolling down the road, a rebuild would bring him back . I used the freeform tool to create a single surface, not very elegant again, maybe someone can improve on it.

Roland Schwarz's example is the smoothest to move around in all axis of movement, you can really throw that prisoner around his cell.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Kevin, I think this guy found the hole in the wall:

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

I could remove the fixed "XY" component, but it's purpose is to associate the shape of the XY domain w.r.t. the cell. I do this first with a fixed version so that the shape does not need to regenerate when the floating version of the XY domain is moved.

This is a technique I developed for designing hinges.

Similarly, constraining the Z movement to a spline is something I learned working with linear actuators. Its a useful way to limit movement within a sketch.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Roland Schwarz wrote:

I could remove the fixed "XY" component, but it's purpose is to associate the shape of the XY domain w.r.t. the cell. I do this first with a fixed version so that the shape does not need to regenerate when the floating version of the XY domain is moved.

This is a technique I developed for designing hinges.

Similarly, constraining the Z movement to a spline is something I learned working with linear actuators. Its a useful way to limit movement within a sketch.

You can also insert the body jail inside the reference part (Insert Part), then there is no need to build it in the context of the assembly. You can reference it locally.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Roland Schwarz - Awesome stuff -

First one to say SolidWorks can't do it - step up and guys like Roland will tell you to think outside of the box, what else are we struggling with, bring it.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Funny you should say that. I'm always telling people NOT to think outside the box. First, get to know the box. Where is it? How big is it? What is inside the box that can be used?

Like a toolbox, what you need is more likely in the bottom corner than the top tray.

Think inside the box!!!

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

lol - You're right "Thinking too far outta the box, its a good chance that your brains will fall out"

I will pass on the New Line, "Think Inside The Box", people

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Did you really step up Rick - ah ah could you get with Roland Schwarz - he takes care of the trivial stuff like "Think Inside The Box" stuff

No question there Rick Becker - but we all know the workarounds are pretty cool though.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Rick Becker wrote:

Not the case here. We are looking for areas where the SW functionality needs to be improved.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Alin, my posting ONE and TWO was in answer to John Stolzfus's question...

First one to say SolidWorks can't do it - step up and guys like Roland will tell you to think outside of the box, what else are we struggling with, bring it.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

The box Rick Becker The box... hehhe

The stuff is in the inside....

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

This is absolutely mental stuff!

What planet do you guys come from? Seriously.........

Just when you see a brilliant idea, it gets whacked by something better. Such a great way of brain-storming.

Dave.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Dave Bear wrote:

This is absolutely mental stuff!

What planet do you guys come from? Seriously.........

Just when you see a brilliant idea, it gets whacked by something better. Such a great way of brain-storming.

Dave.

I agree! What we see in this threads is unbelievable!

I am considering better ways to recognize this brilliance. Maybe providing power-user certificates, or pins, or other trophies.

Maybe free beer at SWW... and means to get there for free...

What else would make sense?

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Here is one thought....

Set up a Online Voting Poll for the people here on the forum to Vote one time only for their pick of the Top Ten - The contestants would be whoever has won any of the Challenges within that season which would run a calendar year starting January 1st..

Here is where your credibility with SolidWorks Corporate would come into play, I would push for the Top Five getting a free trip to SolidWorks World and the Bottom Five having some kind of nice plaque in recognition for making a difference in the community.

This would put you and all the VAR's in a neutral position and the people that can apply the awesome challenges to their daily work, will be the ones making the decisions sending the top five.

And.... You Alin Vargatu will do the honors at the SWW - and oh - I'll take chocolate milk please..

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

John, your thoughts on eligibility for tech support people?

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

You asked me for my personal view, well here it is...

There definitely is a difference between people in the trenches and the tech support men and women.....  My question to you is this, of the winners so far, what is the ratio, the guys in the trenches will almost always win, why? we always get challenged to make it work not make excuses, our bosses aren't used to "No" and we don't have a direct line to the software developers either..  Most of us are off subscription as well, so we're not using the latest and greatest, there's guys doing crazy stuff with old versions....  Having said all that - I surely don't look at the tech people being a challenge and further more, so a tech person starts working for a manufacturer, now he is one of us, in the trench every day.

I don't think that the Tech People should be eligible to be voted for the Top Ten, because their employer has means to get them to SWW as part of their job, maybe not every year, but the chances are still there.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

You are correct, John Stoltzfus, the AEs could be sent by their VARs to work at SWW. This contest is open to any SW user and, so far, we had the pleasure to have only one AE entering the challenges.

So, I do not see this being a problem, unless I did not understand completely your concern.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

If I remember correctly the beer is free at SWW and the fact that I'm having trouble remembering probably means it is. Now,,, a means to get there for free would be great incentive to put up with the frustration of trying to figure this stuff out. I'll bet that these answers would be even more awesome if that is possible.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Open the attached assembly and use Move Component with Physical Dynamics

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

gm  Michael Fernando - didn't see you here in a long time    -

Pretty awesome, you taught me something new this morning

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

I miss you guys as now I’m full time working with NX exploring other CAD possibilities, a target set by myself.

Time to time I check this forum to see if I could be helpful here or if I could learn something new relevant to me. Recently I saw one of the challenges of our friend Alin Vargatu and thought of replying.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

I am envious Michael...

I want one of these for SW...

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

I like the way SWx think: “Give a good CAD system to be developed by other field experienced professionals” and monitor them closely with Gold partnerships.

This way you will get a practically extended software which knows your pains and aches. Obviously, it will have functional solutions and be closer to your heart.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Designing Progressive Dies is my Core Competency.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Hi John,

I just saw this! In the Siemens NX site, I’ve been (mike_fdo) listed as an Top Expert too. Maybe I’ve done something correct.@

https://community.plm.automation.siemens.com/t5/NX-Design/ct-p/NXforDesign

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

This has to win. Accomplished goal with NO mates.

I think I learned something new, but can someone elaborate on what this function would be used for? Is this just a better Triad?

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Is using FEA code to check for contact. Similar to Motion Simulation contact conditions.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Rick Becker wrote:

This has to win. Accomplished goal with NO mates.

I think I learned something new, but can someone elaborate on what this function would be used for? Is this just a better Triad?

Unfortunately, once you exit the Move command, the prisoner is free to leave the jail.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

I want to try something different but I don’t have the liberty of working with SWx at regular working hours.

If I get a chance, I will try it over the weekend.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

But you could the set the alarm (Sound=on) so it makes sound, if the prisoner tries to breakout.

Still not good enough for you?

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Right you are, Michael!

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

There.....now mine has guards.   LOL

Its Friday....

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

LMAO !!!! Brilliant........

Dave.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

The difference between the model that Roland Schwarz uploaded and what Michael Fernando just taught us is

Roland's example can be applied to an assembly that is connected to a linkage and the little ball will remain in the box, where Michael's example is only held in place with Physical Dynamics and couldn't be used in the same assembly.. It is great to know though..

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

"Winning" this challenge with physical dynamics would be like a rugby player "scoring" by carrying a soccer ball into the goal.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

... like a rugby player "scoring" by carrying a soccer ball into the goal.

I may be missing you snark, but...

Isn't that worth points?

Or are you conflating a soccer ball with a quanco?

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

No, not worth points.  Challenge specifically states "mating scheme". Physical dynamics is not a mating scheme.  Trapping the "prisoner" with physical dynamics (as long as you know that physical dynamics exists in the software, which it sounds like many people didn't) is trivial.  Thus my comparison to picking up a soccer ball and carrying it into the goal.  Trivial, simple, easy to do, but it's against the rules.  Kudos to Michael for educating folks on the existence of this function, but irrelevant to this challenge.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Using Physical Dynamics is also somewhat slow - I brought this up in the 1st WPUC for the Pin in Slot

It used to be in the Assembly Modeling Class that VARs taught, but I don't think they still cover it.

I'll have to dig through some of my old drives to see if I can find the class files - There was a Geneva Wheel, Bevel Gears, and some other cool stuff.

I remember teaching it at the VAR, but I'm not sure when it was dropped, I left the VAR in late 2010.

todd

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

I am away on business and will be driving home tonight. Most likely will announce the winners very late tonight or tomorrow.

Sorry for the delay.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Thanks to all participants to the 7th WPUC, and many thanks to our sponsor: John Stoltzfus!

This week we took what we learned in the first WPUC challenge, which tried to find workarounds for an Area Mate (or 2D Boundary Mate), and attempted to emulate a volume mate.

As Michael Fernando stated, SOLIDWORKS can already do that in the Move Component Environment, with the Physical Dynamics on.

But how can we preserve this condition, outside the Move Mate command?

Josh Brady was the first to submit a solution, and what a beauty that was! He created the most elegant mating scheme, with only 5 mates and no extra reference components. The way he used a rotating barrier attached to the inner edge of the step is pure genius!

Then Muhammad Aamer submitted 2 different solutions inside the same file. The first one allowed the prisoner some ways to escape, but the second one worked. Muhammad built a very interesting mechanism involving a point on rails (path mate), which moved a plane attached to the inner edge of the step, plane that was tangent with a cylinder.  The center of the jailed sphere was located at the intersection of the cylinder and the plane. Better open his assembly and see it for yourself. Very nice! Also, Muhammad's solution was the first one without any Limit Mates. He used Free Width Mates instead.

Ned Hutchinson built the most elaborate prison you can think of! His assembly has 7 guards (reference parts) and no less than 35 mates!!! It is a minimum security jail, though, where prisoners are allowed outside from time to time.

Dan Pihlaja submitted no less than 3 solutions. He designed a maximum security prison, where the prisoners are very scared and jumpy. If you want them to go to a specific place, you will have to be patient, because they like to occasionally teleport to other areas of the prison.

John Stoltzfus sent us a prison where the sphere is on patrol around the perimeter, but is not allowed inside.

Roland Schwarz sent us an amazing solution, using a 2D Boundary mate on a face located on rails. There are very few places where the prisoner cannot go. His original solution has only 4 mates, which could be reduced to 3. Muhammad Aamer tried to reduce the mates even further, to only two.

Kevin Pymm believes in giving prisoners access to fresh air, so his jail allows for quick visits outside the walls.

The videos of the most interesting techniques will be posted next week.

It's time to announce our winners.

Congratulations to Josh Brady for winning big this week:

• 1000 points for the first valid solution
• 1000 points for the valid solution with the least number of mates
• 1000 points for the best (most elegant) solution

Congratulations to Muhammad Aamer for winning 1000 points for the first valid solution without using limit mates.

I will award 1000 points also, to Roland Schwarz for sharing with us a brilliant technique. While his solution was not 100% valid, it can be easily refined to open new ways for defining volume mates. Will record a video where I will incorporate part of Roland's technique in a crazy volume mating scheme.

Videos to follow.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Videos coming? Really want to see how he did it...

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Videos coming? Really want to see how he did it...

Videos are coming. Was on the road the whole week. Will try to record next week,

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Please vote on this idea: New mate: Volume or Boundary Mate

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

New article describing this challenge:

https://www.engineersrule.com/impossible-modeling-challenges-part-5-volume-limit-mate-keep-prisoner-jail/

The article is dedicated to the SOLIDWORKS Grand Wizard, Nick Birkett-Smith.

• ###### Re: The 7th Weekly Power-User Challenge (June 2nd, 2017): Simulate a Volume Mate (Prisoner in Jail)

Thanks Alin!

In the last SWW Top Ten Ideas list Alin briefly mentioned reach studies as one use-case for a "volume mate"; it would good to get more details on that use-case and any other real-world use cases where this type functionality is needed.