Energy Evolution Characteristics and Distribution Laws of Rock Materials under Triaxial Cyclic Loading and Unloading Compression
Joint Authors
Zhang, Mingwei
Meng, Qingbin
Liu, Shengdong
Source
Advances in Materials Science and Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-10-29
Country of Publication
Egypt
No. of Pages
16
Abstract EN
To explore the influence of confining pressure on the energy evolution characteristics of loaded rocks, triaxial cyclic loading-unloading experiments on sandstones were carried out under 6 kinds of confining pressures using the axial loading and circumferential deforming control modes.
Total energy density, elastic energy density, and dissipated energy density absorbed by rock specimens under different confining pressures were obtained.
The confining pressure effect of the evolution process and distribution law in energy accumulation and dissipation was analyzed.
Energy conversion mechanism from rock deformation to failure was revealed, and energy conversion equations in different stress-strain stages were established.
The method of representing the rock energy accumulation, dissipation, and release behaviors by energy storage limit density, maximum dissipated energy density, and residual elastic energy density was established.
The rock showed that, with the increase of confining pressure, the characteristic energy density of rock increased in the power exponent form, and the energy storage limit density increased faster than the maximum dissipated energy density.
The greater the confining pressure was, the greater the proportion of elastic energy before peak was.
It is indicated that the confining pressure increased the energy inputting intensity, improved the energy accumulating efficiency, and inhibited the energy releasing degree.
American Psychological Association (APA)
Zhang, Mingwei& Meng, Qingbin& Liu, Shengdong. 2017. Energy Evolution Characteristics and Distribution Laws of Rock Materials under Triaxial Cyclic Loading and Unloading Compression. Advances in Materials Science and Engineering،Vol. 2017, no. 2017, pp.1-16.
https://search.emarefa.net/detail/BIM-1124249
Modern Language Association (MLA)
Zhang, Mingwei…[et al.]. Energy Evolution Characteristics and Distribution Laws of Rock Materials under Triaxial Cyclic Loading and Unloading Compression. Advances in Materials Science and Engineering No. 2017 (2017), pp.1-16.
https://search.emarefa.net/detail/BIM-1124249
American Medical Association (AMA)
Zhang, Mingwei& Meng, Qingbin& Liu, Shengdong. Energy Evolution Characteristics and Distribution Laws of Rock Materials under Triaxial Cyclic Loading and Unloading Compression. Advances in Materials Science and Engineering. 2017. Vol. 2017, no. 2017, pp.1-16.
https://search.emarefa.net/detail/BIM-1124249
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124249