Amelioration of Wolffersdorff Hypoplastic Constitutive Model Considering Intergranular Strain Tensor

Bao Lin Xiong; Chun Jiao Lu

doi:10.4028/www.scientific.net/AMM.638-640.355

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 638-640Amelioration of Wolffersdorff Hypoplastic...

Amelioration of Wolffersdorff Hypoplastic Constitutive Model Considering Intergranular Strain Tensor

Abstract:

Under cyclic load, the major shortcoming–ratcheting is produced in Wolffersdorff hypoplastic constitutive model. For eliminating ratcheting, Wolffersdorff hypoplastic model is ameliorated based on intergranular strain tensor. The added parameters in ameliorated model are determined by optimization method. Under cyclic load of triaxial consolidation undrained condition, the mechanics features of sand are described by the ameliorated Wolffersdorff hypoplastic constitutive model. Preliminary result shows that with increasing times of cyclic load excess pore water pressure is increased gradually and effective stress is reduced gradually. When effective is reduced to zero, the liquefaction happens. So in many projects, excess pore water pressure must dissipate by means of some measures. The sand liquefaction under the dynamic load is avoided.

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Periodical:

Applied Mechanics and Materials (Volumes 638-640)

Pages:

355-359

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.638-640.355

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Online since:

September 2014

Authors:

Bao Lin Xiong*, Chun Jiao Lu

Keywords:

Accumulation, Effective Stress, Hypoplastic Constitutive Model, Intergranular Strain Tensor, Pore Water Pressure

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