On stress oscillation in MPM simulations involving one or two phases

Leon Gonzalez Acosta; Xiangcou Zheng; Phil Vardon; Michael Hicks; Federico Pisano

On stress oscillation in MPM simulations involving one or two phases

Leon Gonzalez Acosta, Xiangcou Zheng, Phil Vardon, Michael Hicks, Federico Pisano

Geo-engineering

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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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 language	English
Title of host publication	Proceedings of the Second International Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction
Subtitle of host publication	8 – 10 January 2019, University of Cambridge, United Kingdom
Pages	135-139
Number of pages	5
Publication status	Published - 2019
Event	MPM 2019: 2nd International Conference on the Material Point Method for Modelling Soil–Water–Structure Interaction - Cambridge, United Kingdom Duration: 8 Jan 2019 → 10 Jan 2019 Conference number: 2 http://mpm2019.eu/home

Conference

Conference	MPM 2019: 2nd International Conference on the Material Point Method for Modelling Soil–Water–Structure Interaction
Abbreviated title	MPM 2019
Country/Territory	United Kingdom
City	Cambridge
Period	8/01/19 → 10/01/19
Internet address	http://mpm2019.eu/home

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). Article mpm2019.22 http://mpm2019.eu/papers

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title = "On stress oscillation in MPM simulations involving one or two phases",

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. ",

keywords = "Hydro-mechanical, MPM, Stress oscillations",

author = "{Gonzalez Acosta}, Leon and Xiangcou Zheng and Phil Vardon and Michael Hicks and Federico Pisano",

year = "2019",

language = "English",

pages = "135--139",

booktitle = "Proceedings of the Second International Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction",

note = "MPM 2019: 2nd International Conference on the Material Point Method for Modelling Soil–Water–Structure Interaction, MPM 2019 ; Conference date: 08-01-2019 Through 10-01-2019",

url = "http://mpm2019.eu/home",

}

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., mpm2019.22 , pp. 135-139, MPM 2019: 2nd International Conference on the Material Point Method for Modelling Soil–Water–Structure Interaction, Cambridge, United Kingdom, 8/01/19. <http://mpm2019.eu/papers>

On stress oscillation in MPM simulations involving one or two phases. / Gonzalez Acosta, Leon; Zheng, Xiangcou; Vardon, Phil et al.
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. 2019. p. 135-139 mpm2019.22 .

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - On stress oscillation in MPM simulations involving one or two phases

AU - Gonzalez Acosta, Leon

AU - Zheng, Xiangcou

AU - Vardon, Phil

AU - Hicks, Michael

AU - Pisano, Federico

N1 - Conference code: 2

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - Hydro-mechanical

KW - MPM

KW - Stress oscillations

M3 - Conference contribution

SP - 135

EP - 139

BT - Proceedings of the Second International Conference on the Material Point Method for Modelling Soil-Water-Structure Interaction

T2 - MPM 2019: 2nd International Conference on the Material Point Method for Modelling Soil–Water–Structure Interaction

Y2 - 8 January 2019 through 10 January 2019

ER -

On stress oscillation in MPM simulations involving one or two phases

Abstract

Conference

Keywords

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