Example
This simple example illustrates how to define a multiscale material.
The name of the multiscale material is COMPOSITE. The material consists of one inclusion material MAT2 embedded in the matrix material MAT1. The shape of the inclusion is prolate. The Mori-Tanaka homogenization method is used. The inclusion has a volume fraction of vf and an aspect ratio of ar. The direction of the inclusion is fixed and defined with a vector (p1,p2, p3). The name of the matrix is MATRIX_MAT1, and the name of the inclusion isFIBER_MAT2.
- Input file template
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MATERIAL, NAME=MAT1 … MATERIAL, NAME=MAT2 … MATERIAL, NAME=COMPOSITE MEAN FIELD HOMOGENIZATION, FORMULATION=MT CONSTITUENT, TYPE=MATRIX, MATERIAL=MAT1, NAME=MATRIX_MAT1 CONSTITUENT, TYPE=INCLUSION, MATERIAL=MAT2, NAME=FIBER_MAT2, SHAPE=PROLATE, DIRECTION=FIXED vf , ar, p1, p2, p3
Elements
The multiscale material model can be used only with three-dimensional pure stress/displacement solid elements in Abaqus/Standard.
Output
By default, the output variables are macro-level results. For field output you can also request micro-level output. The name of the constituent is appended to the end of the output variable.
Input File Usage
Use the following options to request field output for the constituents:
OUTPUT, FIELD ELEMENT OUTPUT, MICROMECHANICS
https://abaqus-docs.mit.edu/2017/English/SIMACAEMATRefMap/simamat-c-meanfieldhomogenization.htm
abaqus 2017 以后版本支持材料定义