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UMAT Multi-element Issues

Submitted by nibalog on

Hello All:

 

I have written a UMAT code to predict the viscoelastic behaviour within a shape adaptive structure. I have followed similar steps used in Abaqus subroutine manual, I have applied this UMAT to a single quad element and it works as predicted. But when I apply it multiple elements model it breaks down. 

Is there any special command i need to put in UMAT subroutine to account multi element analysis? I will appreciate all related comments, 

 

Thanks

Anomalous plasticity in the cyclic torsion of micron scale metallic wires

Submitted by dabiao liu on

Our new paper entitled "Anomalous
plasticity in the cyclic torsion of micron scale metallic wires" has been
accepted by PRL

(see: http://link.aps.org/doi/10.1103/PhysRevLett.110.244301)

ANSYS v13

Submitted by knaguib on

I need help in ANSYS 13 (Mechanical APDL interface), If anyone has an example or tutorial for modeling of reinforced concrete beam with discrete reinforcement using non-linear material definition, please provide on my E-mail: eng.karim.naguib [at] gmail.com (eng[dot]karim[dot]naguib[at]gmail[dot]com)

Abaqus Concrete Damaged Plasticity Model

Submitted by giuliozani on
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Hi everybody,



I'm trying to simulate the structural behavior of High Performance Fiber Reinforced Concrete specimens by means of the Concrete Damaged Plasticity Model.



My constitutive relation is represented by a multilinear law, with a nonlinear pre-peak followed by a softening branch.