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A question on UMAT implementation of non-local theory

Submitted by Liu Jinxing on
research
computational mechanics
ABAQUS
simulation
UMAT

 

Hi, friends,

Now, I am implementing the non-local continuum theory in ABAQUS through UMAT programming.

Unfortunately, I have been obstacled by the following question:

On one hand, in non-local continuum theory, the non-local strain of every particular integration point is determined by the global strain field all over the specimen.

Unit cell model

Submitted by Gouse on
research
unit cell
two phase

Hi,

I have modeled a two phase unit cell with one inclusion in a soft matrix. I have applied appropriate periodic boundary conditions. Load is applied a displacement. I have solved the problem using FEA through ABAQUS. Now I want macroscopic stress-strain response of the material.

What I have done is, taken the Reaction force and divided it by the area and similary displacement and didvided by length, will this give me the stress-strain response or do I have to use some homogenisation methods.

Thank You

 

Regards

Ghouse

Fluid-structure Interaction in Cell Mechanics

Submitted by ADINA Support on
research
large deformation
cell mechanics
fluid-structure interaction
red blood cell

We present an application of fluid-structure interaction analysis to the mechanics of red blood cells. For more information see the following link:

http://www.adina.com/newsgH60.shtml

Please recall that we offer a special academic package, for research and teaching, for university users. For more information see:



http://www.adina.com/educ.shtml

about tsai-wu failure criteria in ansys.....

Submitted by mechevikas on
research
tsai-wu failure criteria ...

sir,i am student of masters in cad/robotics from india,.,and i am doing my

thesis on ansys in drilling as topic.,.sir i want to know the application

tasi wu failure criterian in ANSYS.,.,how we apply this method.,,.i am

very new user of ansys.,.,if u have help files about this or any

suggestion please provide me.,.

i will be thankful to for your guidance.,.

Crystal Plasticity

Submitted by Mubeen on
research

I am interested in the computational crystal plasticity (elastic-viscoplastic models), and I intend to start working in this area. Therefore, I am looking for some review papers--

1- which provide an overview of the state-of-art in this area (a summary of the recognised single crystal plasticity models).

2- about the application of single crystal plasticity using micromechanics based  multiscale FEM for the prediction of texture evolution.

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I will be very thankful if sombody can answer these queries.

Abaqus CPT with cohesion.

Submitted by incarnation.adi on
research
Abaqus CPT with cohesion.

Hi all...

I am new to abaqus. I have to model cone penetration test (CPT) in abaqus.

I am using drucker prager plasticity and hardening to model the soil.

The cohesion (d) decreases as plastic strain increases. But how do i input this into the model ?

Drucker prager hardening inputs have yield stress and plastic strain columns.

So from cohesion, how do i get the yield stress values ?

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