Material Point Method
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Material Point Method (MPM):
research
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).
How to assign tensile and compressive stress-strain curve in Ansys.
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Hi everyone
I need help regarding material modelling in Ansys.
Actually we have obtained the stress-strain behaviour for slurry
infltrated fibre concrete experimentally. For FE modelling of a
circular ring of this SIFCON. I want to assign actual values in the
available material models. I tried to input + and - sign for tensile
and compressive stress-strain values respectively in multilinear
isotropic, but it did'nt accept -ve values. Suggestions from experts
are welcome. If anymore detail is needed to clarify this querry I
can provide.
Peridynamic theory vs. classical continuum theory
Dr. Stewart Silling has provided me with a copy of his talk on Peridynamic theory that he presented at McMat 2007. The PDF file of the talk is attached below.
In order to deal with classical material models and volume constraints, Dr. Silling has modified the original theory to allow for forces that are not necessarily pairwise. A bit on that is included in the talk.
Future of fracture mechanics
If possible,share your opinion (idea) about the future trend of fracture mechanics. Thanks!
help for applying the cohesive model to predict the fatigue lift for bimaterial system with perfect interfaces
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Dear fellows,
We will predict the fatigue life for the metal-ceramic multilyer devices subjected to cyclic load in service . Residual stresses are induced during high- temperature process in the devices, which were known in the previous work. Considering the bimaterial interface as a weak plane, no geometric discontinuity are taken into account, i.e., perfect interfaces are considered.
How to construct the cohesive interface model (no initial crack)?
appreciate your advice in advance.
velocity correction SPH
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Hello Everybody,
Monaghan suggested for the SPH velocity correction an epsilon value of 0.5. If i use that in my code, my fluid behaves like pudding, not like water. It behaves like water when i use 0.001 or something similar. My start conditions are: rho = 1000, smoothing length h = particle spacing dx, sampling neighbours within a radius of 2h. Has anybody an idea?
Regards,
Frank