A Moving Least Squares Material Point Method for Varied Porous Material Interactions and Non-sticky Coupling of Phases

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Date
2022
Authors
Nilles, Alexander Maximilian
Müller, Stefan
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
The Material Point Method (MPM) has become very popular in computer graphics due to its capability to handle a variety of materials and ease of coupling for multi-material simulations. However, MPM suffers from numerical stickyness, which is especially apparent in fluid-solid coupling. Furthermore, the free-flowing nature of fluids can cause issues for simulating immiscible fluids, leading to improper separation of phases especially at lower resolutions. Furthermore, some MPM formulations suffer from unwanted dissipation, noise or instability. Our MPM framework solves the latter using the Moving Least Squares MPM, while the former is addressed by coupling two grids only on contact, with an optional friction term for tangential coupling. This is further enhanced with a buoyancy penalty force that can achieve clean separation of immiscible fluids even at low resolutions. We combine this with a method for porous solids which we generalize in order to allow for highly varied material interactions.
Description

CCS Concepts: Computing methodologies --> Physical simulation

        
@inproceedings{
10.2312:vmv.20221214
,
booktitle = {
Vision, Modeling, and Visualization
},
editor = {
Bender, Jan
 and 
Botsch, Mario
 and 
Keim, Daniel A.
},
title = {{
A Moving Least Squares Material Point Method for Varied Porous Material Interactions and Non-sticky Coupling of Phases
}},
author = {
Nilles, Alexander Maximilian
 and 
Müller, Stefan
},
year = {
2022
},
publisher = {
The Eurographics Association
},
ISBN = {
978-3-03868-189-2
},
DOI = {
10.2312/vmv.20221214
}
}
Citation
URI
https://doi.org/10.2312/vmv.20221214
 https://diglib.eg.org:443/handle/10.2312/vmv20221214
Collections
VMV2022