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首页> 外文会议>2007采矿科学与安全技术国际学术会议 >Research on Damage Constitutive Model and Evolution Equation of Coal under Uniaxial Compression
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Research on Damage Constitutive Model and Evolution Equation of Coal under Uniaxial Compression

机译：单轴压缩下煤的损伤本构模型与演化方程研究

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摘要

Based on the CT real-time testing of coal microscopic damage propagation, the comparison of damage variable between CT scanning and Bellonoi equation, Lemaitre equation in the process of uniaxial damage spread was obtained which solves successfully damage discriminating 'scale' problem, and the results is more reasonable than Bellonoi equation and Lemaitre equation. In order to describe logically its behaviors and evolution, its constitutive model and evolvement function under uniaxial compression were carried through separately in pre-linearity phase, start and development phase, speedup phase, which it is important to guide engineering.
机译：通过对煤的微观损伤传播的CT实时测试，对CT扫描与Bellonoi方程，Lemaitre方程在单轴损伤扩展过程中的损伤变量进行比较，成功解决了判别“尺度”问题。比Bellonoi方程和Lemaitre方程更合理。为了从逻辑上描述其行为和演化，在预线性阶段，启动和发展阶段，加速阶段分别进行了单轴压缩下的本构模型和演化函数，这对指导工程设计具有重要意义。

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