【摘要】 从本构曲线的塑性功的角度研究了应变硬化和应变软化的定义问题,引入了材料力学的微结构"自恰"原则,分析了应变软化-损伤之间的关系,同时针对岩土工程界关于应变软化介质多用负指数分布或Weibull分布描述应变本构关系,分析了Weibull分布下的应变软化介质的本构方程的参数求解模式,并对其参数特性和本构曲线的适应性进行了分析。更多还原

【Abstract】 The definition of strain-softening and strain-hardening is studied from the plastic work of constitutive curve.The relation between strain-softening and damage is analyzed by introducing the micro-structural "self-consistent" rule in mechanics of materials.In geotechnical engineering,the constitutive model for strain-softening medium is mostly described by negative exponent distribution or Weibull distribution.In view of this,the model for solving the parameters of constitutive formula for strain-softening media under Weibull distribution is analyzed and its parameter characteristics and the adaptability of the constitutive curve are also discussed.更多还原