A new damage model for microcrack-weakened brittle solids |
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Authors: | Feng Xiqiao Yu Shouwen |
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Institution: | (1) Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, China |
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Abstract: | In the present paper, a micromechanically based damage model for microcrack-weakened solids is developed. The concept of the
domain of microcrack growth (DMG) is defined and used to describe the damage state and the anisotropic properties of brittle
materials. After choosing an appropriate fracture criterion of microcrack, we obtain the analytical expression of DMG under
a monotonically increasing proportional plane stress. Under a complex loading path, the evolution equation of DMG and the
overall effective compliance tensor of damaged materials are given.
The project supported by National Natural Science Foundation of China |
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Keywords: | damage model brittle material constitutive relation |
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