MICROMECHANICAL SIMULATION OF A MARTENSITIC TRANSFORMATION BY FINITE ELEMENTS

Martensitic transformation plasticity simulations by finite elements

The mechanical behaviour associated to the martensitic transformation has been modelled using a 2D FE description. The martensite variants are constituted of different elements of the mesh and four different variants are allowed to transform in the grain. The transformation progress is prescribed using a thermodynamical criterion based on the maximal work associated to the variant formation. Tr...

Computer Simulation of Martensitic Transformation Under Stress

This paper reports a computer simulation of martensitic transformation in both Cu-Zn-Al and Fe-Ni-C alloys by a 2-dimensional model . The influence of the imposed stress on the mechanical behaviour, the transformation kinetics, and the microstructure are illustrated for Cu-Zn-A1 alloy. The study of transformation kinetics shows the following features: (1) in case of stress-free transformation, ...

Micromechanical simulations of biopolymer networks with finite elements

The mechanics of biological tissue is largely determined by the mechanics of biopolymer networks such as the extracellular matrix on cellular scale or the cytoskeleton on subcellular scale. Micromechanical simulations of biopolymer networks have thus attracted increasing interest in the last years. Here we introduce a simulation framework for biopolymer networks based on a finite element model ...

Martensitic Transformation in NiMnGa Single Crystals: Numerical Simulation and Experiments

In this article, we develop a continuum mechanical model to simulate deformation and phase transformation processes in shape memory alloys. The model is based on a detailed description of the stored energy. Furthermore, the energy dissipation due to phase transformations is taken into account via the maximum-dissipation principle. The results from the 3D numerical simulations of stress induced ...

Martensitic Transformation and Elastic Constants