Hauptseite > Publikationsdatenbank > A Consistent Boundary Method for the Material Point Method - Using Image Particles to Reduce Boundary Artefacts > print

001     868012
005     20210130004021.0
020 _ _ |a 978-84-121101-1-1
037 _ _ |a FZJ-2019-06605
041 _ _ |a English
100 1 _ |a Schulz, Stephan
|0 P:(DE-HGF)0
|b 0
|e Corresponding author
111 2 _ |a VI International Conference on Particle Based Methods: Fundamentals and Applications
|c Barcelona
|d 2019-10-28 - 2019-10-30
|w Spain
245 _ _ |a A Consistent Boundary Method for the Material Point Method - Using Image Particles to Reduce Boundary Artefacts
260 _ _ |a Barcelona, Spain
|c 2019
|b International Centre for Numerical Methods in Engineering (CIMNE)
300 _ _ |a 522 - 531
336 7 _ |a CONFERENCE_PAPER
|2 ORCID
336 7 _ |a Conference Paper
|0 33
|2 EndNote
336 7 _ |a INPROCEEDINGS
|2 BibTeX
336 7 _ |a conferenceObject
|2 DRIVER
336 7 _ |a Output Types/Conference Paper
|2 DataCite
336 7 _ |a Contribution to a conference proceedings
|b contrib
|m contrib
|0 PUB:(DE-HGF)8
|s 1576756623_22301
|2 PUB:(DE-HGF)
336 7 _ |a Contribution to a book
|0 PUB:(DE-HGF)7
|2 PUB:(DE-HGF)
|m contb
520 _ _ |a The Material Point Method (MPM) is a continuum-based numerical method which discretises the object as material points. It is particularly wellsuited for and has shown great success in the community for large deformations. Even though it has been widely adopted, there are still fundamental questions to be addressed. In MPM the material properties are carried on the material points and the dynamics is calculated on an overlaid grid. Afterwards, the material points are integrated according to the grid values using an explicit time integration scheme. The traditional boundary methods are applied on the grid values, such as setting the grid momentum to zero for grid nodes inside a fixed wall. This can cause artefacts in the stress as seen for an object in touch with the wall. These distort the stress multiple grid lengths into the object. In this paper we propose a novel consistent boundary method to reduce these artefacts. The method is borrowed from electrostatics and makes use of so called image particles. With their help the desired values of the momentum field are created on both the grid and particles in a consistent way. We will also show an optimization that makes the explicit construction of mirror particles unnecessary. The traditional boundary method and image particle method are then compared using numerical examples featuring stress induced by a simple shear and body forces. These numerical examples show a significant reduction of boundary artefacts using the image particle method.
536 _ _ |a 511 - Computational Science and Mathematical Methods (POF3-511)
|0 G:(DE-HGF)POF3-511
|c POF3-511
|f POF III
|x 0
700 1 _ |a Sutmann, Godehard
|0 P:(DE-Juel1)132274
|b 1
|e Corresponding author
|u fzj
856 4 _ |u https://congress.cimne.com/particles2019/frontal/doc/Ebook_Particles_2019.pdf
909 C O |o oai:juser.fz-juelich.de:868012
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910 1 _ |a Forschungszentrum Jülich
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|v Computational Science and Mathematical Methods
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|l Supercomputing & Big Data
914 1 _ |y 2019
920 _ _ |l yes
920 1 _ |0 I:(DE-Juel1)JSC-20090406
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980 _ _ |a I:(DE-Juel1)JSC-20090406
980 _ _ |a UNRESTRICTED

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