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Journal of Zhejiang University SCIENCE A

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Implementation of absorbing boundary conditions in dynamic simulation of the material point method


Author(s):  Zhi-gang SHAN, Zhe-xian LIAO, You-kou DONG, Dong WANG, Lan CUI

Affiliation(s):  Zhejiang Huadong Construction Engineering Corporation Limited, Hangzhou 310014, China; more

Corresponding email(s):  dongyk@cug.edu.cn

Key Words:  Material point method; Absorbing boundary condition; Submarine landslide; Impact


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Zhi-gang SHAN, Zhe-xian LIAO, You-kou DONG, Dong WANG, Lan CUI. Implementation of absorbing boundary conditions in dynamic simulation of the material point method[J]. Journal of Zhejiang University Science A, 1998, -1(4): .

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author="Zhi-gang SHAN, Zhe-xian LIAO, You-kou DONG, Dong WANG, Lan CUI",
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year="1998",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2000399"
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%A Zhe-xian LIAO
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%A Dong WANG
%A Lan CUI
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J0 - Journal of Zhejiang University Science A
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Abstract: 
Outgoing waves arising from high-velocity impacts between soil and structure can be reflected by the conventional truncated boundaries. Absorbing boundary conditions (ABC), to attenuate the energy of the outward waves, are necessary to ensure the proper representation of the kinematic field and the accurate quantification of impact forces. In this paper, damping layer and dashpot ABCs are implemented in the material point method (MPM) with slight adjustments. Benchmark scenarios of different dynamic problems are modelled with the ABCs configured. Feasibility of the ABCs is assessed through the velocity fluctuations at specific observation points and the impact force fluctuations on the structures. The impact forces predicted by the MPM with ABCs are verified by comparison with those estimated using a computational fluid dynamics approach.

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