I want to find a drawing for a tunnel boring machine and use simulation to test a certain design on a certain wall. Is it possible using solidworks?
Based on the way you've asked the question, I would say that, for you, it is not possible.
What do you mean? I was thinking to fix a wall made of a certain type of rocks (mimicking an actual site) and give the machine a rotary motor for the blade part and a linear motor to resemble the thrust. Would that estimate a required force to break a certain wall ( I might also vary the wall types)
And in case your answer was sarcastic, I’m not asking out of the blues and not knowing what I’m asking. I know. I just want to check if the input factors are enough to give an accurate answer. + if I could find drawings for a tbm somewhere so I can simulate. Hope we use this platform to help each other and not for sarcasm
Your question was too general.
"Simulate a tunnel bore"
Now we know the cutting part.
Anyone has a real tunnel bore drawing or model will not be able to give it to you: Non-disclosure agreement.
Last place I worked make the "teeth" and other part for tunnel bore.
Model the cutting end of the tunnel is not too difficult.
Modeling the "wall" could be hard.
The wall is not flat. It is random.
Also you'll need to use non-linear and/or motion.
Do you have a super computer?
The simplicity with which you asked the question displays a profound lack of understanding of the complexity of the task at hand. There are portions of this that are possible in SolidWorks. However, simulation and FEA are not magic wands for use by the ignorant. I do not say ignorant in a negative way necessarily. I am ignorant. I just know enough about my own ignorance to say that it is also impossible for me. As with many things, simulation is GIGO - garbage in, garbage out. In order to properly set up an FEA/simulation, you need to be capable (or at least somewhat close to capable) of solving the problem by hand on paper. If you have no clue how one would go about breaking this problem down and solving it manually, you will not be able to set up a simulation that yields anything approaching accurate results.
I can use the cutting part only, but would the simulation be accurate without having the entire body. The tbm thrusting depends on how the thrust cylinders are used not only how the cutting head is shaped. The cutting part is okay I can draw it myself. Maybe try to calculate the thrust of a certain type and input it to the head? And I know the wall is a very tough one. Real life conditions cannot be simulated in any way but I want to try to make assumptions to make the process easier.
Hey again man,
Yeah I know we are all ignorant. But I have a degree in engineering and I can do some math and try to mimic real life cases. I know my question sounded shallow as I was typing it in a hurry. But I do know stuff and I was thinking, as I said in my reply to frederik, to calculate whatever the body part gives as thrust to the cutting head and only draw the cutting head to simulate?
As for my computer, it isn’t very super but I’ve done non linear analysis before. The wall was simple and the process was simpler but it took almost a fortnight to finish. I could try doing it again now and I have facilities with better PCs in case it doesn’t work. My only concern is it I simulate the cutting head only, would it be enough?
Plus, asking if it is possible means I understand it is a tough task and I haven’t done it before even though I had my share of solidworks simulations. So I didn’t intend it the way you understood but in the contrary I thought it would be impossible. If it is possible and I won’t be wasting time, I’d dig into it and understand more until my ignorance is decreased and I reach a point where I can prepare a decent simulation
Majd Al Mohtar wrote:would it be enough?
Majd Al Mohtar wrote:
would it be enough?
Enough for, what?
You still haven't fully define your problem yet.
Cutting is the result of head turning and moving forward.
Like a drill.
You need to "simulate" both.
Red, bad... Blue, good...
I told you I want to simulate a single boring machine through different walls. But if I only use the cutting head (easy to draw) I cannot resemble it accurately. As for the remaining part of the TBM I honestly don’t have any basis to draw it so this is why I was asking if I can replace the moving forward part by a sort of single system with a resultant from it.
I also didn’t get your message as I am here for actual help and not for someone to speak gibberish. In case you have any input or something helpful I’d like to listen, other than that, you are welcome to talk but I won’t be wasting time. You people really should know how to be respectful and actually help.
kind regards man
I really don’t know why everyone here is attacking me I clearly didn’t know if I could do something and just asked if someone could help. In case you can give me any suggestion you think is possible, please let me know
You sound like Elon Musk.
A genius talking so fast me normal people cannot understand.
Majd Al Mohtar wrote:if I can replace the moving forward part by a sort of single system with a resultant from it.
if I can replace the moving forward part by a sort of single system with a resultant from it.
Just apply forward and rotation on the cutting head.
Majd Al Mohtar wrote:You people really should know how to be respectful and actually help.
You people really should know how to be respectful and actually help.
Do you even have a Simulation premium license (not the same as Solidworks premium)? Solidworks premium only gives you access to linear simulation unless they changed something.
Theoretically yes what you want to do is possible. Will you get accurate results? More than likely, NO. There are a ton of factors which you won't account for in your simulation. Can your computer even handle a simulation like this? Doubtful. My guess is even if you could get the simulation setup properly it would take weeks to run, and likely the simulation would still fail.
I know you do know stuff, but just because you have an engineering degree doesn't mean you anything about FEA. 99% of the engineers I know think FEA is so simple, yet when I look at how they setup their simulations it's very clear they don't know jack squat about it. Solidworks actually makes it very easy to setup a simulation, which in my opinion is bad. It's too easy to setup garbage. This is one reason I prefer ANSYS, you actually have to kind of know what you are doing.
David Lane wrote:you actually have to kind of know what you are doing.
David Lane wrote:
you actually have to kind of know what you are doing.
I will try this. I’m sorry in case I bothered or anything but I was just trying to figure out something and suddenly got attacked without even anyone having a discussion with me. Thanks for your time man much appreciated
I’m not claiming I’m an expert in FEA. Actually I hope I focussed on it more to be better than what I am
now. This is why I asked the question. And yes I worked with Ansys and setting up the simulation needs way more details. I agree with you on that point. I just wanted to know if there is a way I could do it for the sake of comparison of TBM cutting ability and different wall types. Thanks for your time cheers man!
Simulation doesn't tell you what you don't know.
It will agree or disagree with what you think you know.
Loved that. Very true. I wanted to compare certain wall types with a single TBM mainly to check something. That was my main goal so I do agree with you.
Hahahaha that’s a good one man.
No one is attacking you. They are just telling you what you don't want to hear.
You, with your current experience, are not qualified to do a simulation like this. So instead of getting offended, go get training and learn how to do it. Maybe do the test in the real world and then use trial and error to try to match the results in FEA. I personally don't think that's a good use of anyone's time.
FEA is about optimizing designs, not necessarily about getting 100% accurate results.
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