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Amelioration of Cross-Anisotropy Wu-Bauer Hypoplastic Model Considering Intergranular Strain Tensor

Wu-Bauer hypoplastic model may simulate cross-anisotropy of sand. The cross-anisotropy of the deposited sand is distinguished with the angle between deposited plane and direction of the principal stress in the Wu-Bauer hypoplastic model. The parameters considering cross-anisotropy in the model are determined by fitting experimental data with optimization. By virtue of intergranular strain tensor, the cross-anisotropy Wu-Bauer hypoplastic model is revised under dynamic load. Finally, the different deposited angle is computed by the revised model. It is shown that the revised Wu-Bauer hypoplastic model can simulate cross-anisotropy of sand and distinguish quantitatively strength and deformation of deposited sand in different loading direction under cyclic load.