Blog posts
A 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???
A 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???
from NIT calicut , need help in Ansys modeling cracks in offshore tubular joints
hi everyone,
i am doing my masters in offshore structures, as part of my thesis work i am doing fatigue analysis of offshore tubular joints. So , i have modeled the typical joints( T joint, K joint and Y joint) in ansys, now i have to model the cracks to find stress intensity factors, then i ahve to estimate fatigue life.
Can anybody pls tell me how to model the crack in Ansys classic, if u have any tutorials or examples please send me.
my mail-id nareshphilics [at] gmail.com
Sigma Technology shares the success of aircraft buiders (IOSO news)
29 January 2010 New Russian Fifth-Generation Fighter made his first flight. This aircraft was designed by company Sukhoi with the new engines designed by NPO Saturn. We would like to express our proud and mention that both companies have used IOSO Optimization software as a regular part in their design and development technological cycle.
Career after the Ph.D.
Hi,
I'm an Engineer and a Ph.D. student in Applied Maths, working in the field of Nonlinear Finite Elements for Elasticity. I often think about my future career since, by now, I have a strong experience with coding FE in C++/Matlab/Mathematica, but no clue whatsoever about commercial black-box softwares for FEA. I'm worried about this, since most of the job vacancies from the industry (I'm not interested in pursuing the Academic career) seem to require only experience with a specific software and application, and not to directly code FE.
3D Modeling of Cracks
Hi every body, i want to simulate the cracks in 3D models.
Thank You
Crack Modeling Using ANSYS
Hi every body, I,m researcher in faculty of engineering, and i use ansys program in phD studies. I want to simulate the cracks in 3D models.
Thank You
How to mesh sandwich 3D structures
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
Exprimental Data for Wall or Structure under Blast Loading
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