i need help - LS-DYNA Tutorial especially composite impact analysis. so pls send a tutorial PDf file to my mail ID. karthirajme [at] gamil.com (karthirajme[at]gamil[dot]com)
hai my name is A.Karthikeyan. i am doing my Ph.D in Composite field especially impact analysis using Ansys LS-Dyna.
Gyroscopic effects is a very old topic.
When reading
literature, I am confused by the two concepts: "gyroscopic moment", and
"Coriolis force". Are they exactly the same thing or different? what's
the difference between them if different?
As we know how to define the interface type is a key problem in ABAQUS.
But when the interface is not regular, can we find a convenient way to realize it?
The Computational Mechanics group at The University of Iowa, led by Professor S. Rahman,
is looking for new Ph.D. students, who are capable of and interested in performing
high-quality research on reliability-based design optimization. The research, supported
by NSF and others, entails developing new theory and efficient algorithms for stochastic
computing and design optimization. A solid background in mechanics and elementary
numerical analysis is a must; some exposure to uncertainty and probabilistic methods is
desirable.
Dear All,I have written a finite element code in C++. The results have generally high accuracy. But when I change the order of evaluating r and theta of the polar coordinates in terms of x and y in the sub-program of computing the shape functions, then the results are changed about 10^-9 of the initial results. The change is negligible but I wonder why this happens? I had initially supposed it may be related to some memory linkage in the program but since now I have not been successful to find any. Is there any one to have an idea about this funny error???
Dear All,
I have written a finite element code in C++. The results have generally high accuracy. But when I change the order of evaluating r and theta of the polar coordinates in terms of x and y in the sub-program of computing the shape functions, then the results are changed about 10^-9 of the initial results. The change is negligible but I wonder why this happens? I had initially supposed it may be related to some memory linkage in the program but since now I have not been successful to find any. Is there any one to have an idea about this funny error???
Hello All,
I have some difficulties to mesh the 3D sandwich composite. I want to mesh the outer volume with composite materials with 15 plies and the inner with foam. I don't know how to do so. I've tried to do mesh the outer volume by SOLID46. But I didn't get good mesh due to element coordinate mismatch. Could anybody please suggest me in this regard? I really need your help.
Thank you very much.
Wasim
Dear guys
I've done some numerical research on behavior of concrete wall under blast loading. And know for checking the validity of my results I need some related exprimental data about it. Is there any one who can help me?
Regards
M.Meisam
