NDLI: Theoretical and experimental study on equivalent nonlinear Burgers model for soften rockmass

Content Provider	IEEE Xplore Digital Library
Author	Jianghong Zhu Hongguang Ji
Copyright Year	2011
Description	Author affiliation: Civil and Environmental Engineering School, University of Science and Technology Beijing, China (Jianghong Zhu; Hongguang Ji)
Abstract	The classic Burgers creep model only combined with several liner basic cells can hardly describe the accelerating creep stage of rock material, while the creep attribute of the weak rock is very remarkable. Based on creep damage and hardening mechanisms, the cell of Maxwell was replaced with a nonlinear softening spring, while the Kelvin was replaced with a nonlinear hardening damper, and the two cells were acted in series. An equivalent nonlinear Burgers creep model was built and the corresponding creep equations were deduced. In addition, an experimental study was conducted by collecting rock samples from practical engineering. According to the results, some programs were developed to deal with the test data and the model corresponding parameters were also fitted. Hereby, a theoretical creep curve was achieved and then compared with the creep testing curves. It was shown that the equivalent nonlinear Burgers creep model was felicitous to characterize the creep behavior law of the weak rock.
Starting Page	2802
Ending Page	2805
File Size	247786
Page Count	4
File Format	PDF
ISBN	9781457702891
e-ISBN	9781457702907
DOI	10.1109/ICETCE.2011.5775267
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Creep Damage mechanism Rocks Educational institutions Nonlinearity Stability analysis Burgers model Mathematical model Helium Softening Hardening mechanism
Content Type	Text
Resource Type	Article

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