Improved Nonlinear Nishihara Shear Creep Model with Variable Parameters for Rock-Like Materials
Joint Authors
Yong, Rui
Lin, Hang
Du, Shi-gui
Zhao, YanLin
Wang, Yixian
Fan, Xiang
Zhang, Xing
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-02-27
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Creep property is an important mechanical property of rocks.
Given the complexity of rock masses, mechanical parameters change with time in the creep process.
In this work, a nonlinear function for describing the time-dependent change of parameters was introduced and an improved variable-parameter nonlinear Nishihara shear creep model of rocks was established.
By creating rock-like materials, the mechanical properties of rocks under the shear creep test condition were studied, and the deformation characteristics and long-term shear strength of rocks during creep were analyzed.
The material parameters of the model were identified using the creep test results.
Comparison of the model’s calculated values and experimental data indicated that the model can describe the creep characteristics of rocks well, thus proving the correctness and rationality of the improved model.
During shear creep, the mechanical properties of rocks have an aging effect and show hardening characteristics under low shear stress.
Furthermore, according to the fact that Gk of the nonlinear model can characterize the creep deformation resistance, a method to determine the long-term shear strength is proposed.
American Psychological Association (APA)
Lin, Hang& Zhang, Xing& Wang, Yixian& Yong, Rui& Fan, Xiang& Du, Shi-gui…[et al.]. 2020. Improved Nonlinear Nishihara Shear Creep Model with Variable Parameters for Rock-Like Materials. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1122696
Modern Language Association (MLA)
Lin, Hang…[et al.]. Improved Nonlinear Nishihara Shear Creep Model with Variable Parameters for Rock-Like Materials. Advances in Civil Engineering No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1122696
American Medical Association (AMA)
Lin, Hang& Zhang, Xing& Wang, Yixian& Yong, Rui& Fan, Xiang& Du, Shi-gui…[et al.]. Improved Nonlinear Nishihara Shear Creep Model with Variable Parameters for Rock-Like Materials. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1122696
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122696