The Anisotropy Characteristic of Rock Material Described by the Stress Softening Criterion in Civil Engineering

Abstract:

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In this paper, firstly we utilize the elastic model, which provides the simplest representation of material behavior in civil engineering. This model is valid for homogeneous, isotropic, continuous materials that exhibit linear stress-strain behavior with no hysteresis on unloading. The elastic models include both isotropic and anisotropic elastic models. Then the Mohr-Coulomb model is used which can represent shear failure in soils and rocks in civil engineering and geotechnical engineering. After that, the strain- softening model is founded, which allows representation of nonlinear material softening and hardening behavior based on prescribed variations of the Mohr-Coulomb model properties (cohesion, friction, dilation, tensile strength) as functions of the deviatoric plastic strain. Finally, a case study is done for the stratified rock mass, the elastic modulus of the rock sample for different surrounding compressive are obtained, to exhibit the anisotropy characteristic of this type of rock material

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Periodical:

Edited by:

Helen Zhang, David Jin and X.J. Zhao

Pages:

226-229

DOI:

10.4028/www.scientific.net/AMR.568.226

Citation:

H. B. Zhang and Q. Y. Liu, "The Anisotropy Characteristic of Rock Material Described by the Stress Softening Criterion in Civil Engineering", Advanced Materials Research, Vol. 568, pp. 226-229, 2012

Online since:

September 2012

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$35.00

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