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Displacement Controlled Geometric Nonlinear FEM

Submitted by vasudeo on
education
Geometric Nonlinear FEM
Hi I am working on numerical simulation of petroleum pipeline subjected to
seismic hazards. I have developed Geo-Nonlinear FEM code for load
controlled which i have compered with Ansys and it is working fine.
now i would like to apply fault  displacement for this i need to
convert my code to displacement controlled using penalty approach
but it is not converging. i will be very happy if any one can suggest
how i can over come this problem or plz sugest me some book or papre. here I am using Newton-Raphson method 
 

3D Doctor Tool

Submitted by prabhjot.juneja on
research
FEM
DICOM

Hi,

 

I hope this is the right forum to get some help for my work. 

I am looking at CT data (DICOM files) to make FEM models. To generate 3D surface/volumes for FEM, I was looking for softwares. They all are pretty expensive (4-10K USD). I have decide togo with Able Software's 3D-DOCTOR. I am lookign for some reviews or user experience or comments for this tool.

 

Thanks

Prab

8th International Conference on Fatigue Damage of Structural Materials - Author Registration Deadline: 1 June

Submitted by Dan Lovegrove on
conference
fatigue damage

Don't forget! Accepted oral and poster presenters should register no later than 1 June 2010 to ensure that their material is included in the final program and the book of abstracts.  Non-registered presentations will be withdrawn from the conference after this date.  Please include your abstract reference number when completing your registration form.

Modeling the dynamic mechanical analysis of a single pulp fiber

Submitted by Al Taib on
Forums
Materials Forum
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DMA
dynamic mechanical analysis
single pulp fiber
loss and storage modulus

Hi there,

 

I am trying to model the DMA test for single pulp fiber. In this research I can I assume whatever procedure or materials parameters I need, from an old PhD thesis I took some materials parameters for the cellulose, hemicellulose and lignin and by using the composite theories I calculated the stiffness matrices for each constituent I have and from there I calculated the stiffness matrix of the fiber, and of course calculated the longitudinal young’s modulus of the fiber at the room temperature.

 

FEM simulation on damage of brittle materials with Abaqus on mesoscale

Submitted by yoyo Li on
Forums
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User subroutines in ABAQUS
multiscale damage evolution in composites
mesoscopic model

Hi,

I'm a fresher in abaqus. Now I'm trying to simulate the damage of brittle kind of materials, like concrete with abaqus on mesoscale. But there are some problems now...

The potential for Vanadium in molecular dynamic simulation

Submitted by Shuozhi Xu on
research
molecular dynamics
vanadium

One of the most significant factors in molecular dynamic simulatin is to choose the proper potential. Recently, I did some searching jobs on Vanadium (V) potential and finally decided which potential I am going to use. Here is a simple summary:

A brief introduction of EAM, F-S and MEAM potentials for BCC transition metals

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