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Hi, mrgoldthorpe Thank you very much for your help! I really appreciate! I might use your excel file to do the presentation. So could you tell me your name or company so that I can mention at my presentation. Thanks again! Riku

Hi Everyone I'm modeling two electronic packages subject to temperature cycling (delta T= 120C), the only difference between them is the pitch distance (0.5mm and 0.3mm), everything else is the same including material properties (elastic perfect plastic for solder alloy, purely elastic for...

Thank you very much for your reply, mrgoldthorpe! Yes, I agree with you, thats what I'm thinking, I just dont know how to technically explain it. So elastic unloading really means softening, right? I'll look at all the components of stress and strain. Thanks again. Riku

Hi Curlyq Thanks for your ideas! These two models share exactly same material property. I'm modeling 2 IC(integrated circuit) packages under temperature cycling test, the difference between them is: the pitch distance value of their solder joints. I expected that the model with smaller pitch...

Hello everyone I'm doing a sensitivity study on 2 models. One of the parts has been defined as plastic material. After running thermal cycling tests on these 2 models, I found that plastic strain in model 1 is greater than that in model 2, however the von mises stress is just opposite (higher...

Hi alimansur I'm doing my project and same problems happened to me. As I know, you could find these material properties from published paper or look them up from JMatPro software. Hope this helps.

Can you just create one part and then partition them, finally you assign material properties to different PARTITIONS? Hope this helps!

Hello everyone, I'm currently analyzing an assembly which has 5 parts and they have been tied together. To get accurate results, I'm trying to make the interface nodes match. But seems its hard to make them exact align. Is it necessary to make them match? Anyone can help me find a way to...

Regarding the tie constraint and referrence point, you can check with the contact example in the 'interative manual'

Hello everyone, I'm a beginner for Abaqus and this forum, I'm trying to simulate multiple cycle of thermal cycling test using Abaqus, and wondering if there is an easy way to make multiple cycles instead of creating a bunch of steps. Does anybody know if subroutine could do that? Thanks for any...