Blog posts

i simulate some process using shell elment, i find the results have big difference between abaqus and lsdyna. the abaqus results always show the stress in the thickness direction is zero. but the lsdyna is not. i don't know why? if some one know that, please give me some suggestions. i heard that the abaqus can not show that stress component. if not, how can i do to calculate that and fill it into the results file (.fil file). thank you!

Open PhD position at Mines ParisTech, Centre des Matériaux, Paris, France

Submitted by Nicolas Cordero on Mon, 05/04/2009 - 08:05

Simulation of crack bifurcation in single crystal nickel base superalloys under mixed mode conditions

PhD position available at the Centre des Matériaux , ParisTech , starting fall 2009.

This 3-year project is fully funded by Mines ParisTech, SNECMA and ONERA.

A question about deformation gradient in ABAQUS user subroutine VUMAT

Submitted by billowriver on Sun, 05/03/2009 - 22:44

software

I have a question about deformation gradient in VUMAT.

When I use one element, Vumat works well and there is no any problem. Initially, only the diagonal part of deformation gradient is one, the others are zero. However, the problem is when several elements are considered, all the components of deformaiton gradient are equal to one at very beginning.

Stress intensity factors for a slanted crack under compression

Submitted by Julien Jonvaux on Sun, 05/03/2009 - 21:51

research

crack

stress intensity factor

compression

j-integral

Hello everyone,

Here is the problem I have: I'm modeling the geometry of a simple straight edge crack in a 2D elastic medium using Abaqus. I assume plain stress conditions. The crack makes an angle with the horizontal, is small enough to be considered as embedded in an infinite domain (ratio crack length/size of domain < 1/10) and I apply a vertical compressive load on top of my domain. I fixed one point in displacement at the bottom of it and the whole bottom edge is constrained not to move vertically.

Laterally loaded pile groups

Submitted by R.Sabry on Sat, 05/02/2009 - 13:19

research

Hi, I am Ramy, I am about to perform some analyses on laterally loaded pile groups in sandy soils, does anyone have any idea about the best constitutive model to use?, loading is static. And I am using PLaxis 3D foundations version 2.1 Regards, Ramy

Impact analysis of bus body-ansys ls dyna

Submitted by Parvatham Ramalingam on Sat, 05/02/2009 - 12:16

education

I am a B.Tech student at VIT.Presently doing a project on Impact analysis of Bus body using ansys ls dyna.I am getting many errors.If any one is having complete tuturial about above topic, pls send it to me.

parvathamr [at] gmail.com (parvathamr[at]gmail[dot]com)