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Convergence problem in 2-d axisymmetric elasto-plastic formulation

Submitted by rajdrdl on Sat, 07/10/2010 - 16:41

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Dear all,

I am trying to solve the thermal ratcheting of a hollow cylinder using elasto-plastic formulation.

I am applying the moving thermal gradient in axial direction. Our FEM code(Newton Raphson) is converging for first increment but after that it is diverging. I have used 8 noded serendipity element with 9 gauss point.

Anyone can please help me that why it is happening?

Thanks

Raj

Sequence loads

Submitted by uni_students2009 on Sat, 07/10/2010 - 08:51

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fracture mechanics

Hi everybody

I want to ask you regarding the general pattern of diagram da/dn Vs. DeltaK(stress intensity factor) for Variable amplitude loading? Could we share our knowleadge in this case?

Regards,

thermo-mechanical coupling analysis of brake disc

Submitted by Tayo on Sat, 07/10/2010 - 05:27

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Pls i am new to Ansys just learning how to use it for my research project on composite brake disc. pls can someone help with the following;

1. procedure for thermo-mechanical analysis

2. setting boundary conditions

3. meshing application

i will be very glad if i can get this informations it will really go along way in assisting me for my reseach work. debisi1 [at] yahoo.com (debisi1[at]yahoo[dot]com)

thank youvery much

Generating quadratic tetrahedral (tet10) meshes from .stl surface models

Submitted by sps4 on Fri, 07/09/2010 - 14:44

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Hi iMechanica-experts,

I'm working with soft tissue models of abdominal organs (e.g. liver) for surgery simulation. These models are alway constructed from segmented surface files (triangles, e.g. .stl). I'm devloping an algorithm that uses isometric quadratic tetrahedral (tet10) elements (mainly in order to reduce volume locking). Now I'd like to generate a tet10 mesh from the surface mesh.

link abaqus-matlab

Submitted by Nima8 on Wed, 07/07/2010 - 07:47

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hello,

how can i link abaqus and matlab together?

thanks

A molecular dynamics study of void interaction in copper

Submitted by Shuozhi Xu on Tue, 07/06/2010 - 15:22

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molecular dynamics

void interacion

http://dx.doi.org/10.1088/1757-899X/10/1/012175

Abstract

JClub July 2010: Mechanics of Ionic Polymer Metal Composites

Submitted by Wei Hong on Thu, 07/01/2010 - 21:19

file data to UDEC and 3DEC for masonry behavior

Submitted by houti on Thu, 07/01/2010 - 08:28

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I am student in doctorate and I’m working on the experimental and numerical behavior of brick wall masonry and i am utilising UDEC and 3DEC code i have some problem to establish the file data for this code, if you can help me and transmit this file dada please

PBC in ABAQUS

Submitted by ABAqirl on Thu, 07/01/2010 - 08:17

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periodic boundary conditions

Hello everybody, i am new in abaqus, is anyone who knows how to apply periodic boundary conditions, for example for unit cell. The piece of code would be very much appreciated

for example ´

if i have on the left hand side node set NSET1, on the right hand site NSET2 than i should use equation like this for periodic boundary conditions in x-direction?

*EQUATION

NSET1, 1,1, NSET2, 1, 1????

Please help

Best regards

ABAgirl

Periodic Boundary Conditions in ABAQUS

Submitted by ABAqirl on Thu, 07/01/2010 - 08:15

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ABAQUS/CAE

Hello everybody, i am new in abaqus, is anyone who knows how to apply periodic boundary conditions, for example for unit cell. The piece of code would be very much appreciated

for example ´

if i have on the left hand side node set NSET1, on the right hand site NSET2 than i should use equation like this for periodic boundary conditions in x-direction?

*EQUATION

NSET1, 1,1, NSET2, 1, 1????

Please help

Best regards

ABAgirl

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