【摘要】 通过强度准则和非线性突变理论研究了岩石试验系统的变形稳定性问题,岩石的变形稳定取决于环境刚度和岩石本身的等效刚度,岩石的破坏失稳发生本构曲线峰值过后的某个位置。增大环境刚度有利于系统的稳定性,刚性加载一般不会导致强烈的失稳破坏,由尖点突变模型和强度准则求得了试验系统失稳位置所对应的变形值的表达式。更多还原

【Abstract】 The deformation stability of rock test system is studied based on rigidity criterion and nonlinear catastrophe theory.The rock deformation stability is dependent on the environment rigidity and the equivalent rigidity of rock.The rock instability occurs at a position after the peak value in the constitutive curve.An increase in the environment rigidity will be beneficial to the system stability and rigid loading will generally not lead to a strong instability-caused destruction.The formula for the deformation value corresponding to the instability position of the test system is found based on the cusp catastrophe model and rigidity criterion.更多还原