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Issues with animating an anchor getting drilled into the ground

Question asked by Daniel Pratt on Jul 23, 2014
Latest reply on Jul 26, 2014 by Jared Conway

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I am having massive issues with the animation of an anchor getting drilled into the ground. The only restriction in the anchor is an advanced screw mate. When i create a key in the animation of the possition i want the anchor to be in after being drilled in the animation calculates and produces a red key. When i hover my mouse over the red key the position the anchor is meant to be in shows up. When i play the animation the anchor rotates the wrong way and incredibly slowly. i have tried deleting the part and that part of animation several times and it still isnt working. I cant think of anything that solidworks would have an issue with in regards to this animation, a simple screw mate animation?

PS. i have also tried without the screw mate and just creating keys for each rotation as it enters the ground. This worked but was not very good. the anchor was not going straight into the ground and jump from side to side as it went in.

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ret time key.PNG575.3 KB
Where is should be.png681.5 KB

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Deepak Gupta Jul 23, 2014 4:50 AM

Can you upload you assembly with one anchor which demonstrates the issue.

In case you've 2014, you can take advantage of rotation in exploded view. And then you can use the same to create the collapse in the animation.

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Daniel Pratt @ Deepak Gupta on Jul 24, 2014 7:41 PM

Here is an example assembly of the issue i am having Deepak, The expolded view method would be a real pain for me to do as i am dealing with about 100 or so legs to be drilled into the ground and am half way through creating the animation and i would have to recreate the entire animation..

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Leg Drilling in issue.zip1.5 MB

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Jared Conway @ Daniel Pratt on Jul 24, 2014 8:23 PM

this happens in new motion studies and when they are on their own?

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Daniel Pratt @ Jared Conway on Jul 24, 2014 8:32 PM

Hmmm is there a way around it? like i said ive tried getting rid of the screw mate and manually putting in the keys for the rotation and motion but this didnt come out very smooth..

The legs are never on their own. All of them fade into the scene and get drilled into the ground one by one over a 15 second period in a mexican wave motion. There is a close up of one leg getting drilled in so i need to have this motion working..

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Jared Conway @ Daniel Pratt on Jul 26, 2014 7:42 PM

the suggestion i'm making is for troubleshooting only

to help identify where the problem lies

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Jim Boland Jul 23, 2014 9:10 AM

Instead of specifying an end position of the component, use a distance mate to advance the anchor into the ground. I think the problem you have is that when you add a key for the final position, you are not only specifying the linear position of the anchor, but also the rotational position as well. The solver may be having a problem because the rotational position you specified is not the position the screw mate is trying to achieve, so there is a conflict. Sometimes this conflict may be out in the fifth or higher decimal point where it is not visually evident but mathematically incorrect.

If the rotation is in the wrong direction, reverse the screw mate direction (in the motionmanager) at the initial key and also remember to update the key and do a CTRL-Q to rebuild the model.

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Jared Conway Jul 24, 2014 4:07 AM

Can you confirm you are using animation and not motion?

Also does this happen with the part on its own in an assembly or a new study?

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Jim Boland @ Jared Conway on Jul 24, 2014 10:58 AM

He could not have been in motion as you cannot add a componet key in motion. If you try, the key is greay and you get an immediate error on calculate which tells you you cannot use keys in motion to move components. If he could place a key and got it to turn red, he had to be in animation.

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Jared Conway @ Jim Boland on Jul 24, 2014 3:20 PM

true, i should have actually asked differently, I want to make sure hes trying to do animation only and not motion.

but good point about the keys

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9 Replies

Deepak Gupta Jul 23, 2014 4:50 AM
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Can you upload you assembly with one anchor which demonstrates the issue.

In case you've 2014, you can take advantage of rotation in exploded view. And then you can use the same to create the collapse in the animation.
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- Daniel Pratt @ Deepak Gupta on Jul 24, 2014 7:41 PM
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  Correct Answer
  Here is an example assembly of the issue i am having Deepak, The expolded view method would be a real pain for me to do as i am dealing with about 100 or so legs to be drilled into the ground and am half way through creating the animation and i would have to recreate the entire animation..
  Attachments
  - Leg Drilling in issue.zip1.5 MB
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  - Jared Conway @ Daniel Pratt on Jul 24, 2014 8:23 PM
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    this happens in new motion studies and when they are on their own?
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    - Daniel Pratt @ Jared Conway on Jul 24, 2014 8:32 PM
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      Hmmm is there a way around it? like i said ive tried getting rid of the screw mate and manually putting in the keys for the rotation and motion but this didnt come out very smooth..
      
      The legs are never on their own. All of them fade into the scene and get drilled into the ground one by one over a 15 second period in a mexican wave motion. There is a close up of one leg getting drilled in so i need to have this motion working..
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      - Jared Conway @ Daniel Pratt on Jul 26, 2014 7:42 PM
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        the suggestion i'm making is for troubleshooting only
        to help identify where the problem lies
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Jim Boland Jul 23, 2014 9:10 AM
Mark Correct
Correct Answer
Instead of specifying an end position of the component, use a distance mate to advance the anchor into the ground. I think the problem you have is that when you add a key for the final position, you are not only specifying the linear position of the anchor, but also the rotational position as well. The solver may be having a problem because the rotational position you specified is not the position the screw mate is trying to achieve, so there is a conflict. Sometimes this conflict may be out in the fifth or higher decimal point where it is not visually evident but mathematically incorrect.

If the rotation is in the wrong direction, reverse the screw mate direction (in the motionmanager) at the initial key and also remember to update the key and do a CTRL-Q to rebuild the model.
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Jared Conway Jul 24, 2014 4:07 AM
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Can you confirm you are using animation and not motion?

Also does this happen with the part on its own in an assembly or a new study?
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- Jim Boland @ Jared Conway on Jul 24, 2014 10:58 AM
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  He could not have been in motion as you cannot add a componet key in motion. If you try, the key is greay and you get an immediate error on calculate which tells you you cannot use keys in motion to move components. If he could place a key and got it to turn red, he had to be in animation.
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  - Jared Conway @ Jim Boland on Jul 24, 2014 3:20 PM
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    true, i should have actually asked differently, I want to make sure hes trying to do animation only and not motion.
    
    but good point about the keys
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Issues with animating an anchor getting drilled into the ground

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