ENERGY APPROACH TOWARDS STRESS-DILATANCY FORMULATION BASED ON DOUBLE SLIP-ROTATION RATE CONCEPT(<Special Issue>Geomechanics of Structured Materials)

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概要

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• This paper proposes a new approach for the analysis of shear-induced volume change of granular materials. Following a revisit to the micro-mechanical deformation mechanism and the findings from discrete element method simulations, it is concluded that the double slip-rotation rate mechanism is appropriate for the description of granular materials subjected to shear. The implementation of energy principle with the double slip-rotation rate mechanism provides a new method for the derivation of stress-dilatancy relation under general stress conditions without adopting Rowe's hypothesis of minimum energy ratio. This new approach can be easily extended to take into account the non-coaxility of granular material deformation. The dilatancy formulations proposed by Taylor, Rowe and Matsuoka-Nakai can all be recovered as special cases of the proposed approach. Comparisons with experimental data show that the new stress-dilatancy relation correctly captures the dilatancy behaviour of sand observed in both general 3D stress conditions and simple shear tests.

• 社団法人地盤工学会の論文

著者

• Guo Peijun

  Department Of Civil Engineering Mcmaster University

関連論文

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• ENERGY APPROACH TOWARDS STRESS-DILATANCY FORMULATION BASED ON DOUBLE SLIP-ROTATION RATE CONCEPT(Geomechanics of Structured Materials)

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