Abstract

The Finite Element Method (FEM) is widely used to simulate geotechnical engineering problems at small deformations, but it typically fails to capture large displacements and landslide runout. In contrast, the Material Point Method (MPM) is well suited for large displacement problems, but when using explicit time integration schemes, it may be computationally inefficient for long-time processes. In this paper, the two methods are used sequentially to simulate a laboratory experiment of rainfall-induced landslide from small to large displacements and a novel methodology to map results from FEM to MPM is proposed. The numerical results are compared with experimental evidence in which displacements are determined using digital image correlation techniques.

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