A construction method of a nonlinear rock fatigue constitutive model based on application of a rheological model
A constitutive model and rheological model technology, applied in special data processing applications, CAD numerical modeling, complex mathematical operations, etc., can solve the problems of unclear physical and mechanical meaning of parameters, insufficient description of displacement field evolution law, etc., to achieve parameter Simple, physically-mechanically meaningful effects
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[0037] In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0038] Please refer to figure 1 , the deformation and damage of rock mass under cyclic loading and rheological tests also grow nonlinearly with an independent variable such as time, and are all caused by crack evolution. They have three identical characteristic stages: decay stage (stage Ⅰ), stable stage stage (stage II) and accelerated stage (stage III), these essentially similar mechanical behaviors indicate that the deformation and damage mechanism of rock mass under cyclic loading and rheological tests, that is, the evolution and deformation characteristics of cracks in space and time exist. Notable similarities.
[0039] Based on the similarity between rock mass fatigue and rheology, the combinat...
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