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Hi all,

i am facing difficulty in mapped and sweep meshing.Can anybody guide me how to do sweep mesh or how to do mapped mesh??If anybody have any kind of good tutorial regarding mapped meshing, kindly send me at my email hijazi.19 [at] gmail.com   

I will be highly obliged to you

I see that people talk a lot about ANSYS over here and that is the software that I use during my works at university. However, when I read some papers or attend some conferences I hear about other finite element programs such as ABACUS and NASTRAN. Besides that I've also seen other open-source codes such as SALOME, Code-Aster, etc...

What do you think is the best software to make finite element analisys, or if it's difficult to say wich one is best, what are the weak and strong points of each software? 

Hi everyone,

I have to model a composite steel-reinforced concrete shear wall with steell encased profiles . I searched in the literature and I found that for concrete is used SOLID65 element, and for reinforcement and steel encased profile is used LINK8 -3D spar element. I defined this 2 elements and two materials for them, BISO and CREEP(implicit creep).

I have a problem in my research that involves a platinum electrode which will form bubbles of hydrogen gas.  Bubbles sticking to the electrode is expected to be a problem, and one method of dealing with this is to induce resonant vibrations in the electrode.  These vibrations can be excited by running an alternating current through the electrode, which produces physical forces through electromagnetic interactions.

This is a great problem.   Getting the boundary conditions right is going to be a real challenge.  They should be able to be implmented as slip on the free boundary, possibly as a weak form contribution. Instead of posting an article, I have attached a document about this sort of problem in 2D from a model implemented in Comsol Multiphysics.  This document provides some basic analysis of the problem, and may be of some use here.

Hi, dear friends,

 I am new  to i-mechanica and working for a reaserch institute for steam and Gas turbine in Aachen,Germany. I am doing Modal  analysis of a Gas turbine matrix burner and want to find out the diffrent mode shapes and the frequency. My problem is, I want to impose a temperature field of round about 1800°C which I will extract from CFD results. SO I would be grateful if any one can tell me how can I impose temperature field to get this modes and frequency because this things are influenced by temperature.

Have a nice day 

Hi everyone,

   I am used to use 'dstran, stran, drot...' to develop my user subroutine UMAT and VUMAT codes in Abaqus. But recently I read some publications in which they use dfgrd0, dfgrd1 and dtime to develop their codes. I want to know what are the differences between these two ways?

   Thank you very much!

 Shunlai

Dear All

I am studying on thermal stresses analysis, however I have a problem here and need helps.