The theory of isotropy damage is based on the hypothesis that the material and damage are symmetrical and isotropic.
各向同性损伤理论是建立在材料是均匀的、各向同性的以及损伤也是各向同性的假设基础之上。
For the isotropic plastic material, the anisotropic plastic stress fields at a slowly propagating crack tip become the perfectly plastic stress fields.
对于各向同性塑性材料，缓慢扩展裂纹尖端的各向异性塑性应力场就变成理想塑性应力场。
Compared with isotropic materials, the composite material has evident advantages.
复合材料与各向同性材料相比具有明显优势。
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