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Looking for a postdoc on Laser Material Processing

Submitted by eforoozmehr on

I am already PhD candidate of Mechanical Engineering in Southern Methodist University, Dallas, Texas. I am looking for a postdoc position with an emphasis on laser material processing. You may access my CV by:

http://lyle.smu.edu/~eforoozmeh/CV.htm

 

Failure Surface Graphics in Stress Space

Submitted by Richard M. Chr… on

 A new section has been added to the website on failure criteria for engineering materials.  This new work displays many different three-dimensional computer graphics of failure criteria surfaces in stress space. The full range of isotropic materials are covered from ductile metals to brittle ceramics and glasses and beyond.  All of these computer generated graphics can be seen at www.failurecriteria.com/failuresurfacegr.html.

 

Prof. Ares Rosakis has been elected to a fellow of the American Academy of Arts and Sciences, 2009

Submitted by Jianliang Xiao on

Solid mechanician and Caltech Faculty Member Named to American Academy of Arts and Sciences: Caltech professor Ares Rosakis, is among the 210 new fellows elected to the American Academy of Arts and Sciences this year. They join an assembly that was founded in 1780 by John Adams, James Bowdoin, John Hancock, and other scholars to provide practical solutions to pressing issues.



Error Code 144

Submitted by Michael_Bond on

Hello all, new to the forum, so I would like to say thank you in advance for any help I may receive.

 I have been using CPS8R elements to model a plane stress problem, in conjunction with a UMAT I have developed. This has been running correctly, and the results obtained are good.

I am now running an analysis using axisymmetric elements, CAX8R.

The output from CAX8R is..... S11, S22, S33, S12. The ouput from CPS8R is....S11, S22, S12.

I have therefore updated the damage model accordingly to account for this.

Heat Simulation and Analysis of a Railway tunnel

Submitted by chepatilio on

hello eve1,

i m facing some problem while trying to mesh a horse shoe type structure,  when i define the element type as solid 8 node 70 (brick8 node 70) it gives me error saying cannot apply coz it violaets the ASME code or some hting like that....plz help me out wiht what element type has to be defined for the HORSE SHOE type structure...............or whether to define the semi-circular portion seperately (with wat typr ) and the bottom portion seprate.

abaqus vumat-excessive distortion

Submitted by pani3882 on

Hi All



I am trying to implement a composite material model in vumat. So far, I
have been successful in getting the correct results for a cube for both
tension and compression with the cube being modeled with just one
element (C3D8R)



But when, i model the same cube (side 40mm) with 125 elements,
subjected to the same bc's, with the same material parameters, i get an
error that the element is undergoing excessive distortion.



I am specifying a density of 1.52e-9 ton/mm3.



What Platform Would You Prefer for a Software That Helps in Learning FEM---Windows or Java?

Submitted by Ajit R. Jadhav on

Ideally, this post of mine should carry a poll, but I guess as an ordinary user, I cannot insert one.

Currently, I am writing a small software program that is especially designed to help learn FEM. For instance, I will be providing detailed listings for every intermediate step, e.g. all those [D], [B], [k], etc. matrices for each element, as well as the final assembled global system {F} = [K]{d} and its solution separately at each Gauss point. Only linear static problems for the time being; will add transients/eigenvalue problems in near future.