A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A manifold Lagrangian integration point method for large deformation failure modelling of rock slopes
Abstract A manifold Lagrangian integration point method is proposed by combining the manifold coverage algorithm and a Lagrangian integral point finite element method, aiming to simulate the large deformation failure in slope engineering. The model is established based on the dual-discrete method with a fixed Eulerian background mesh and moving material particles. The method adopts the Eulerian mesh as the fixed background mesh and describes the deformation behaviour of macroscopic objects via particle motion between meshes, thus avoiding the problem of grid distortion in the calculation process and eliminating particle motion constraints in the set region. A strain softening strain energy density failure criterion is introduced for the first time to determine the failure of the continuum, such that the process of discontinuous failure can be addressed by a continuous method. Finally, the method is verified by simulating the post-excavation failure evolution of a slope engineering case for highway reconstruction and expansion. The results found that the obtained slope slip surface is essentially consistent with the theoretical solution.
A manifold Lagrangian integration point method for large deformation failure modelling of rock slopes
Abstract A manifold Lagrangian integration point method is proposed by combining the manifold coverage algorithm and a Lagrangian integral point finite element method, aiming to simulate the large deformation failure in slope engineering. The model is established based on the dual-discrete method with a fixed Eulerian background mesh and moving material particles. The method adopts the Eulerian mesh as the fixed background mesh and describes the deformation behaviour of macroscopic objects via particle motion between meshes, thus avoiding the problem of grid distortion in the calculation process and eliminating particle motion constraints in the set region. A strain softening strain energy density failure criterion is introduced for the first time to determine the failure of the continuum, such that the process of discontinuous failure can be addressed by a continuous method. Finally, the method is verified by simulating the post-excavation failure evolution of a slope engineering case for highway reconstruction and expansion. The results found that the obtained slope slip surface is essentially consistent with the theoretical solution.
A manifold Lagrangian integration point method for large deformation failure modelling of rock slopes
Wang, Manling (author) / Li, Shuchen (author) / Yuan, Chao (author) / Wan, Zeen (author) / Zhou, Huiying (author) / Wang, Aitao (author) / Sun, Fahe (author)
2020-10-09
Article (Journal)
Electronic Resource
English
Application of the numerical manifold method to model progressive failure in rock slopes
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