research
ABAQUS ( viscoelastic material model)
Does any one know how to implement other viscoelastic material models, like Burgers' model, in ABAQUS? To my knowledge only Prony series can be used to model visoelastic materials in ABAQUS/standard.
thanks,
Milliyon
Non-conformability in Mesh-free Methods
Can any one please tell me where to find some mathematical proof (or justification) of the non-conformability arises due to misalignment of background cell and the support domain in mesh-free methods based on Galerkin formulation.
Amit
Open Source Publishing
I am putting together a proposal in response to NSF's Engineering Virtual Organizations solicitation regarding what I call Open Source Publishing. The proposal can be found (and edited if you setup an account) here. I would encourage you to register and edit if you're interested. All revisions are saved so there is no risk of messing something up. The proposal is fairly unstructured at this point and consists
Discrete Fractal Fracture Mechanics
This paper extends the recently developed theories of fracture
mechanics with finite growth (mainly the work of Pugno and Ruoff, 2004
on quantized fracture mechanics) to fractal cracks. One interesting
result is the prediction of crack roughening for fractal cracks.
Self-healing materials with microvascular networks
Kathleen S. Toohey, Nancy R. Sottos, Jennifer A. Lewis, Jeffrey S. Moore, and Scott R. White
Material Point Method
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Material Point Method (MPM):
Mimics Innovation Awards 2007 Winners Announced!
June 1st 2007, Materialise announced the winners of the Mimics Innovation Awards 2007 at the International Mimics User Group Meeting in Washington, D.C.
We congratulate:
- Category 1: Innovative implant design system & the development of innovative medical procedures.
Vos W. – University Hospital Antwerp, Belgium
Discusssion on Crystal plasticity
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Discusssion on Crystal plasticity
(1):How to establish a model which reflect the size effect in material
(2):How to form the finite element implementation of equilibrium field equation
I hope to have discussion with you in these topics
My E-mail: zhangxu26 [at] 126.com (zhangxu26[at]126[dot]com)
Mechanical Threshold Stress model for 6061-T6 aluminum alloy
I have attached a copy of my McMat07 talk below. The talk is about a modified mechanical threshold stress (Follansbee-Kocks) model that can be used for strain rates > 1000 /s and high homologous temperatures. In the model, the pressure dependence of the flow stress arises from the pressure dependence of the shear modulus. Even after using the most accurate models for the shear modulus (and the melting temperature) we find that the pressure sensitivity of the flow stress is underestimated by our model (by quite a bit).