Print Email Facebook Twitter Implementing Dynamic Boundary Conditions with the Material Point Method Title Implementing Dynamic Boundary Conditions with the Material Point Method Author Do, Phuong Chinh (Student TU Delft) Vardon, P.J. (TU Delft Geo-engineering) Gonzalez Acosta, J.L. (TU Delft Geo-engineering) Hicks, M.A. (TU Delft Geo-engineering) Contributor Barla, Marco (editor) Insana, Alessandra (editor) Di Donna, Alice (editor) Sterpi, Donatella (editor) Date 2023 Abstract The material point method (MPM) is gaining an increasing amount of attention due to its capacity to solve geotechnical problems involving large deformations. Large deformations in geotechnics usually involve the failure process and therefore dynamic analyses are often carried out. However, simulating the (infinite) continuous domain using typical Dirichlet (fixed) boundary conditions induces spurious reflections, causing (1) unrealistic stress increments at the domain boundary and (2) the appearance of multiple unnatural stress waves in the domain. Aiming to eliminate this numerical artifact in MPM, two solutions for absorbing boundary conditions found in FEM are implemented and investigated; these are (1) a viscous boundary condition and (2) a viscoelastic boundary condition. The use of such dynamic boundary conditions in MPM is scarce and no validation of them has yet been presented in the literature. In this paper, these absorbing conditions are implemented alongside recent mapping and integration techniques, improving numerical stability and accuracy. Subject Double mapping–generalized composite MPMDynamic boundariesImplicit MPMShallow foundationWave propagation To reference this document use: http://resolver.tudelft.nl/uuid:6b57c079-7f35-4957-b726-ac455b957997 DOI https://doi.org/10.1007/978-3-031-12851-6_27 Publisher Springer Embargo date 2023-01-31 ISBN 9783031128509 Source Challenges and Innovations in Geomechanics: Proceedings of the 16th International Conference of IACMAG Event 6th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2022, 2022-08-30 → 2022-09-02, Turin, Italy Series Lecture Notes in Civil Engineering, 2366-2557, 288 LNCE Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type conference paper Rights © 2023 Phuong Chinh Do, P.J. Vardon, J.L. Gonzalez Acosta, M.A. Hicks Files PDF Phuong_et_al.pdf 1.12 MB Close viewer /islandora/object/uuid:6b57c079-7f35-4957-b726-ac455b957997/datastream/OBJ/view