On stress oscillation in MPM simulations involving one or two phases

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Abstract

Stress oscillations in the material point method (MPM) are one of the major reasons unrealistic results are obtained. In this paper an investigation of the stress oscillations occurring when using one- and two-phase approaches is performed. Specifically, an axisymmetric benchmark and a two-dimensional plane strain problem are used to demonstrate and investigate the oscillations. Furthermore, a partially reduced integration combined with the GIMP technique (GIMP-R) is implemented to reduce large oscillations.
Original languageEnglish
Title of host publicationProceedings of the Second International Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction
Subtitle of host publication8 – 10 January 2019, University of Cambridge, United Kingdom
Pages135-139
Number of pages5
Publication statusPublished - 2019
EventMPM 2019: 2nd International Conference on the Material Point Method for Modelling Soil–Water–Structure Interaction - Cambridge, United Kingdom
Duration: 8 Jan 201910 Jan 2019
Conference number: 2
http://mpm2019.eu/home

Conference

ConferenceMPM 2019: 2nd International Conference on the Material Point Method for Modelling Soil–Water–Structure Interaction
Abbreviated titleMPM 2019
CountryUnited Kingdom
CityCambridge
Period8/01/1910/01/19
Internet address

Keywords

  • Hydro-mechanical
  • MPM
  • Stress oscillations

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    Gonzalez Acosta, L., Zheng, X., Vardon, P., Hicks, M., & Pisano, F. (2019). On stress oscillation in MPM simulations involving one or two phases. In Proceedings of the Second International Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction: 8 – 10 January 2019, University of Cambridge, United Kingdom (pp. 135-139). [mpm2019.22 ] http://mpm2019.eu/papers