Liquirizia28
Guest
Good morning to all, I write to you because I have some perplexity on the work I have to do for my three-year thesis. I have to perform a dynamic analysis with ansys (workbench 14) of a plastic component (the exchange oil cup) that entrusted me with the company in which I performed my internship. the analysis has no experimental feedback and must be done totally in virtual.
starting from the proe file, and exploiting the modal analysis module of ansys, I made a couple of simulations, which differed for the simplification of the model: For example, I started from a very simplified model in which I eliminated elements that alter its stiffness, like a reticulate structure that acts as a support), and then go to check how the body's own frequencies change to the variation of its structure.
What I don't understand is about frf, shock and random.
1) I did not understand how it can be done in the specific of ansys la frf: my academic "tutor" told me that experimentally there are analyses that, using tools like a hammer, turns on the component from the outside with various frequencies and you see how it responds. But in ansys?
2) for random analysis I have seen that there is the specific module and I should have understood that in theory a random analysis previews the study of the behavior of the object following an "unpredictable" or non-deterministic load: in the specific of my component I thought for example the excitement due to a hole. Am I right?
only that even here in practice I do not know how to move; I tried to use the ansys tutorials itself but it's mainly about using the classic anesys and I didn't understand well...if for example I really had to simulate how random the impact with a hole, brutally said, what should I do?
3) shock analysis I did not understand how to do it specifically in the software, and unfortunately I do not even think I have understood well what is theoretical online: mistakenly saying that it is an analysis in which the component is subject to an excitement similar to the random one, but with a deterministic load (for example I read of strong accelerations following an impact, an earthquake, etc...)
Forgive me for the vastness of the question, but there are no courses on the fem at the triennial and until 10 days ago I was still studying for exams, so I had little time to do a culture on the subject.
I accept any suggestion, links to guides, or other, because finding theoretical tracing on the topic is easy, but then going specifically to ansys is a problem.
thanks in advance to all who will want to answer
starting from the proe file, and exploiting the modal analysis module of ansys, I made a couple of simulations, which differed for the simplification of the model: For example, I started from a very simplified model in which I eliminated elements that alter its stiffness, like a reticulate structure that acts as a support), and then go to check how the body's own frequencies change to the variation of its structure.
What I don't understand is about frf, shock and random.
1) I did not understand how it can be done in the specific of ansys la frf: my academic "tutor" told me that experimentally there are analyses that, using tools like a hammer, turns on the component from the outside with various frequencies and you see how it responds. But in ansys?
2) for random analysis I have seen that there is the specific module and I should have understood that in theory a random analysis previews the study of the behavior of the object following an "unpredictable" or non-deterministic load: in the specific of my component I thought for example the excitement due to a hole. Am I right?
only that even here in practice I do not know how to move; I tried to use the ansys tutorials itself but it's mainly about using the classic anesys and I didn't understand well...if for example I really had to simulate how random the impact with a hole, brutally said, what should I do?
3) shock analysis I did not understand how to do it specifically in the software, and unfortunately I do not even think I have understood well what is theoretical online: mistakenly saying that it is an analysis in which the component is subject to an excitement similar to the random one, but with a deterministic load (for example I read of strong accelerations following an impact, an earthquake, etc...)
Forgive me for the vastness of the question, but there are no courses on the fem at the triennial and until 10 days ago I was still studying for exams, so I had little time to do a culture on the subject.
I accept any suggestion, links to guides, or other, because finding theoretical tracing on the topic is easy, but then going specifically to ansys is a problem.
thanks in advance to all who will want to answer