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dithoap's picture

Multi-processor mode of ABAQUS VIEWER

Hi Everyone,

I am making an 3D RVE model for fiber reinforced composite. approximately there are 62500 elements in the model and there are 200 frames in the odb files (the odb size is around 3gb). When I try to open the file, it took me a very long time (approximately one hour) just to display the model in ABAQUS viewer, and when swithcing from one frame to the next frame, it took some time around 10 mins. And it is very not conveient at all. Currently I am using NVIDIA Quadro 5000 for my graphics card.

UMAT in multiscale modeling

Hi all,

I am using multiscale modeling in my analysis. This is what I am trying to do:

-After solving the RVE problem on microscale, I got the stress-strain relationship realated to my RVE and now I need to create a UMAT soubroutines for abaqus in order to call it at the integration points of the macro model. 

Is there a possibility to create a UMAT from stress-strain curve related to a representative volume element? How can I do that? Could you please give me an hint?

Thank you very much in advance for your help

Best regards

Yas

MODELLING RVE FOR SFRC

Hello!

I have to model the RVE for steel fiber reinforced concrete using abaqus. I have to validate it for compressive behaviour and drop weight impact analysis. I am new to abaqus and i have no idea how to do it. Can someone please help me do it? I am in serious need of some sort of guidance. 

phunguyen's picture

A review on multiscale methods for material modeling

Dear all,

Please find enclosed our paper which is published on Journal of Multiscale Modelling
Vol. 3, No. 4 (2011) 1–
42 which gives an overview of state of the art multiscale techniques for material modeling. 

The paper discusses the following topics: homogenization, Representative volume element, computational homogenization (Fe2 methods) for both both bulk materials and strong discontinuities. 

I hope the paper is useful for beginners to the field.

All the bests, 

Homogenization technique

Choose a channel featured in the header of iMechanica: 

Hello all,

 

Why is there no body force considered in the equilibrium equations of the RVE in the homogenization technique?

 

The overall response of the RVE is obtained by solving the RVE boundary value problem under prescribed boundary conditions (either traction or displacement BC) without considering the body force. 

 

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