提出了考虑拉压响应的弹脆性损伤演变的理论模型与本构方程。

The theoretical model and the constitutive equation with the response of both tension and compression for elastic brittle damage evolution taken into account are derived.

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一个主要原因是车轮在钢轨上由于制动滑动产生的脆性马氏体所导致的踏面热损伤和蠕变。

One of important reasons is that the generation of brittle martensite due to brake sliding of wheels on rails leads to tread damage and its creep.

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结论细胞骨架的损伤可引起细胞脆性增加、粘弹性下降，导致细胞生物力学特性的改变。

Conclusion the cytoskeleton injury could cause the increase of cellular fragility and the decrease of the viscoelasticity, which ultimately lead to the change of cellular biodynamics.

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