Blog posts

Hi, everybody. I recently do some reserch on MLPG using in 3D problems, and I have modified the program in G.R. Liu's book.

But what makes me crazy is that I  must  always run the program many times to idenetifiy the proper quardrature sub-domain size to get the right result.

So I confused here, then I did a comparision of the various sub-domain size to examinate the effect of them in G.R. Liu's MLPG2D program. This time, sub-domain size seems have liittle effect on the result. I tried 0.1*nodalspace situation, and results has a about 20% error.

Hi,

I'm presently working on implementing anisotropic yield criteria in LSDYNA as UMAT.

I understand from the LSDYNA documents that effective plastic strain is a default history variable.  So when we code, can we omit the update of effective plastic strain as a history variable? If so, where is it stored and how is it retrieved during post-processing ?

Hi,

I'm presently working on implementing anisotropic yield criteria in LSDYNA as UMAT.

I understand from the LSDYNA documents that effective plastic strain is a default history variable.  So when we code, can we omit the update of effective plastic strain as a history variable? If so, where is it stored and how is it retrieved during post-processing ?

Hi everyone,

I’m looking for a postdoc in mechanics of granular materials.

I’m currently a postdoc at INRIA Grenoble, France (National Institute for Research in Computer Science and Control). My principal research interests focus on granular materials. They include (1) computational mechanics, (2) numerical modeling and simulation with DEM, (3) multi-scale approach and homogenization technique and (4) shock dynamics and nonlinear wave propagation. Here are my three principal publications: