Lightweight Mechanical Metamaterials with Tunable Negative Thermal Expansion
Lightweight Mechanical Metamaterials with Tunable Negative Thermal Expansion
research
deformation gradient tensor
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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.
Dynamic creation and evolution of gradient-nano-grained structures in single-crystal metallic microcubes
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.
Quasi-periodicity and multi-scale resonators for the reduction of seismic vibrations in fluid-solid systems
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.
Recent papers from the team on uncertainty quantification, Bayesian inverse problems, real-time error estimation and acoustic scattering using IGA
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
Flaw sensitivity of highly stretchable materials
Elastomers and gels can often deform multiple times their original length. The stretchability is insensitive to small cuts in the samples, but reduces markedly when the cuts are large. This work shows that this transition occurs when the depth of cut exceeds a material-specific length, defined by the ratio of the fracture energy measured in the large-cut limit and the work to rupture measured in the small-cut limit. This conclusion generalizes a result in the fracture mechanics of hard materials.
Real-time error controlled adaptive mesh refinement in surgical simulation: Application to needle insertion
Real-time error controlled adaptive mesh refinement in surgical simulation: Application to needle insertion
Link to paper: http://hdl.handle.net/10993/28624
New paper submitted to IJNMBE on the use of a posteriori error indicators for real time mesh adaptation during surgical simulation.
Stéphane Bordas
Permalink: http://legato-team.eu/real-time-erro…edle-insertion
Quadratic stress criterion Ansys APDL.
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Hello people,
Does someone know if the quadratic stress criterion (QSC, Brewer and Lagace) for delamination onset is possible to be implemented in Ansys APDL for mixed mode cohesive zone modeling?
Cheers,
/R.