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Homogenized Plastic Macroscopic Models using the RVE concept for porous materials
DOI:
https://doi.org/10.5216/reec.v19i2.75451Keywords:
RVE, Microstructure, Porous Materials, Plastic Macroscopic ModelsAbstract
This work deals with macroscopic constitutive models for analysis of porous materials using the concept of Representative Volume Element (RVE) and homogenization technique leading to low computational cost when compared to full coupled multiscale analyses. For this propose, macroscopic strain states are imposed to the RVE to obtain models expressed by homogenized plastic stress versus plastic strain relationship. The RVEs represent porous microstructures with ductile matrix. A homogenization technique is used in conjunction with von Mises´ model. The results show the obtained constitutive models for complex materials to be applied in analysis of structures composed of porous materials overcoming the using of complex phenomenological models with many parameters to be identified, making their use in engineering applications unfeasible.
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