S.-K. Ryu, Q. Zhao, M. Hecker, H. Y. Son, K. Y. Byun, J. Im, P.S. Ho, and R. Huang, Micro-Raman Spectroscopy and Analysis of Near-Surface Stresses in Silicon around Through-Silicon Vias for Three-Dimensional Interconnects. J. Appl. Phys. 111, 063513 (2012). 

Dear all,

I recently need calculate the stiffness matrix of the cohesive elements manually via mathematica. I used the finite element method to fulfill the assignment, but the result I got didn't match the stiffness matrix I extracted from the Abaqus. Neither did my supervisor.

knn, ktt and kss seem to be so obvious for the traction-seperation law, as also it measioned in Abaqus.  Could you please help me out by offering the way to find how the ABAQUS exactly design the cohesive elements or how ABAQUS calculate the stiffness matrix.

hi,

i am modelindg a concrete beam , first i creat one concrete element and then copy it to creat the beam, but how can i add the steel, i dont want the steel nodes to be coincide with concrete nodes, and then how can i add combin39 between steel nodes and concrete nodes.

thanks

Prony series form :

gR(t)= 1- ( sigma(i=1to N)(gi(1-exp(t/τi))))

where,

gi= Shear relaxation modulus ratio

τi= Relaxation time

can anyone provide me the prony series upto 3 to 4 term for epoxy resin material....its urgent.

Hi all,

Our research team took part in the conference "Sustainable Solutions for Concrete Structures", which took place in Aix-en-Provence, in France. The conference was dedicated mainly to recent advances in modelling of concrete and concrete structures. As always, more details can be found on:  microlab-m3c4.blogspot.com

Cheers! 

Dear All members

I would like to ask if any one can provide tutorials on NURBS subject related to coding in matlab ?for example matlab codes about  thin plate with hole or cantilever beam problem.

Thanks

Nazim Nariman