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Question about curve fitting indentation data with large residual strain

Submitted by Yao Jiang on
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I am trying to use finite element modeling of indentation experiments
to extract hyperelastic material parameters. I am having a dilemma,
when the tissue has residual strain, the model couldn't achieve the
high nonlinear relationship between displacement vs reaction force as
measured in the experiments.



I have tried several strain energy potentials,

1) W=A/B*{exp[B(I1-3)]-1}

2) W=C10(I1-3)+C01(I2-3) 

3) W=C10(I1-3)+C20(I1-3)^2+C30(I1-3)^3

4) Arruda-Boyce type model

Weld analysis using ansys

Submitted by sudheesh on
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weld and plasticity

Inorder to find out the residual stresses and distortions in butt weld due to thermal loads in steel plates, i have used

shell57 for thermal and shell43 for structural.The material properties used are temperature dependent.



I  carried this out in two steps.







The thermal analysis is carried out first.

A moving heat source is used to generate the temperature distribution on the plate.

need a project in FEM in metal cutting

Submitted by rajesh science on
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FEM IN METAL CUTTING

Hello,

I am pursuing masters and I have chosen to do my one year project in FEM IN METAL CUTTING I am looking for some guidance from professionals or researchers working in this field of metal cutting.

also send me any

reference doc

Any help in this regard would be highly appreciated.

Thanks a lot.

regards,

rajesh

Mimics User Community online now!

Submitted by Mimics on
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medical
biomedical
R&D
imaging
discussion forum
image based

Leuven, June 9. Materialise releases the Mimimcs User Community; after the Mimics Innovation Awards, the Medical Innovation Conference and the Innovation Courses, yet another initiative to stimulate biomedical R&D, offering an online platform to bring their users together.
It includes among others:

- FAQ

- Tips&Tricks

- Discussion forum

- Tutorials

- Career section

- ...

Visit http://uc.materialise.com/mimics

FRacture Growth - Abaqus Explicit

Submitted by satyasrinivas on
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Fracture Mechanics Forum
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Hi,

        I want to model 3D crack propagation in Abaqus Explicit. For this I am thinking of using the *shear failure option with element deletion. The path of the crackin my models is not known. I have some basic questions in this regard.

 

1. Is *shear failure a good approach to model crack propagation ?

 

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