A multiphase field model is developed to study the effects of metastable ζ and γ hydrides on the nucleation and growth of the stable δ hydrides in α zirconium matrix. Acta Materialia 123 (2017) 235-244
RVE analysis is popular for computational homogenization. It can be used independently for virtual testing or as a module for multiscale modeling. Its popularity is mainly due to the maturity and acceptance of commercial finite element software. RVE analysis usually requires a 3D domain to obtain 3D properties and local fields. If a 2D RVE is used, only 2D properties and local fields are obtained. To obtain the complete set of properties, multiple analysis is needed. For example, to obtain the complete stiffness matrix, six 3D RVE analyses are needed.
Hello everyone,
I am trying to implement a Mohr Coulomb plasticity model(no hardening at the moment) for the plane strain case. However, the results are not making so much sense.
I was wondering if any of you have tried to code this material model successfully before, or if you could provide me with some algorithm or reference which you know works properly.
Thank you.
Setareh
Lightweight Mechanical Metamaterials with Tunable Negative Thermal Expansion
I am working on a SPD (Sever Plastic Deformation) process using a dynamic Explicit simulation in ABAQUS software.
I have a question which every respected answer will be appreciated:
How can I get the deformation gradient tensor provided byABAQUS?
Thanks in advance.
In an article published today in Science, we have demonstrated the creation of an extreme gradient-nano-grained (GNG) structure in single-crystal microcubes through high-velocity impact. We use the defect-free single-crystal silver microcubes, synthesized using a seed-growth process, as the model system, and fire them at supersonic velocities onto a rigid target to create the GNG structure.
This paper presents a mathematical model for an industry-inspired problem of vibration isolation applied to elastic fluid-filled containers. A fundamental problem of suppression of vibrations within a finite-width frequency interval for a multi-scale fluid-solid system has been solved. We have developed a systematic approach employing full fluid-solid interaction and dispersion analysis, which can be applied to finite and periodic multi-scale systems.
Reference : Accelerating Monte Carlo estimation with derivatives of high-level finite element models
http://orbilu.uni.lu/handle/10993/28618
Bayesian inference for the stochastic identification of elastoplastic material parameters: Introduction, misconceptions and insights http://orbilu.uni.lu/handle/10993/28631
