A Novel Fatigue Damage Model of Rock considering Temperature Effects
Author(s): |
Yaoliang Zhu
Jin Yu Yanyan Cai Xin Tang Wei Yao Xueying Liu |
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Medium: | journal article |
Language(s): | English |
Published in: | Advances in Civil Engineering, January 2020, v. 2020 |
Page(s): | 1-11 |
DOI: | 10.1155/2020/8838335 |
Abstract: |
The deformation rules and failure types of rock fatigue damage at different temperatures are quite different, and existing constitutive theory cannot describe them quantitatively. A novel rock fatigue damage model considering the effects of temperature was presented based on phenomenology. In this model, the residual strain method was used to define the fatigue damage, and the Harris attenuation function was introduced to characterize the cyclic damage evolution. The proposed model has considered the influence of the initial damage and temperature, and the model parameters can be easily calculated. The accuracy of the model was verified by comparing the calculated values of cyclic upper strain and fatigue life with previous test results. The physical significance of the model parameters shows that parameterais related to fatigue stress ratio and lithology, while parameterbis related to temperature. The study has some reference values for the fatigue damage model of rock considering the influence of temperature. |
Copyright: | © 2020 Yaoliang Zhu et al. |
License: | This creative work has been published under the Creative Commons Attribution 4.0 International (CC-BY 4.0) license which allows copying, and redistribution as well as adaptation of the original work provided appropriate credit is given to the original author and the conditions of the license are met. |
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10427192 - Published on:
13/07/2020 - Last updated on:
02/06/2021