Dear Friends,
I have written an UEL for Strain Gradient Plasticity but it shows following error :
FE SOLVER AND MESH HAVE INCOSISTENT NUMBER OF DOFS
I will be very thankful if someone can throw some light on this error.
Thanking in advance.
Soham
I am tyring to solve simple shear problem using a large deformation FE code based on the framework developed by Fleck and Hutchinson for gradient plasticity/viscoplasticity problem (see the attached paper). As the per the formulation, the independent variables are the displacement increments and eqv. plastic strain rate increments. Two sets of equations are solved, one for displacements and the other for plastic strain rates at nodes, following the the above formulation.
The University of Brescia (Italy) has published at the web page
http://www.unibs.it/on-line/ateneo/Home/Ateneo/Concorsibandiegare/articolo456.html
who can tell me more about the critical thickness theory ?I will be very excited if you can introduce some reference to me.I know that critical thickness theory is solved rigorously and ursed to validated a useful approximation which is combined with slip distance theory modified for a finite structure size . (physical life review letters :elastic limit and strain hardening of thin wires in torsion)
dear everyone,
I want to ask if anyone deal with strain gradient proposed
by fleck eat. in 1994 and 1997, using subroutine in ABAQUS ?
A recent paper on JMPS has seriously questioned the foundation of the SGP theory of Fleck and Hutchinson. The matter is not simple, but is it a good bench test for imechanica to discuss?
