期刊
ACM TRANSACTIONS ON GRAPHICS
卷 34, 期 5, 页码 -出版社
ASSOC COMPUTING MACHINERY
DOI: 10.1145/2751541
关键词
Algorithms; Foam; material point method; particle resampling; tearing; shear thinning; shear thickening; viscoplasticity
资金
- JSPS
- NSF [IIS-13-19483, CMMI-11-29917, CAREER-1453101]
- NSERC [RGPIN-04360-2014]
- Intel
- The Walt Disney Company
- Autodesk
- Side Effects
- NVIDIA
- Adobe
- Foundry
- Direct For Computer & Info Scie & Enginr
- Div Of Information & Intelligent Systems [1319483] Funding Source: National Science Foundation
We consider the simulation of dense foams composed of microscopic bubbles, such as shaving cream and whipped cream. We represent foam not as a collection of discrete bubbles, but instead as a continuum. We employ the material point method (MPM) to discretize a hyperelastic constitutive relation augmented with the Herschel-Bulkleymodel of non-Newtonian viscoplastic flow, which is known to closely approximate foam behavior. Since large shearing flows in foam can produce poor distributions of material points, a typical MPM implementation can produce non-physical internal holes in the continuum. To address these artifacts, we introduce a particle resampling method for MPM. In addition, we introduce an explicit tearing model to prevent regions from shearing into artificially thin, honey-like threads. We evaluate our method's efficacy by simulating a number of dense foams, and we validate our method by comparing to real-world footage of foam.
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