A Point-Based Method for Animating Elastoplastic Solids

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dc.contributor.authorGerszewski, Danen_US
dc.contributor.authorBhattacharya, Haimasreeen_US
dc.contributor.authorBargteil, Adam W.en_US
dc.contributor.editorEitan Grinspun and Jessica Hodginsen_US
dc.date.accessioned2016-02-18T11:50:48Z
dc.date.available2016-02-18T11:50:48Z
dc.date.issued2009en_US
dc.description.abstractIn this paper we describe a point-based approach for animating elastoplastic materials. Our primary contribution is a simple method for computing the deformation gradient for each particle in the simulation. The deformation gradient is computed for each particle by finding the affine transformation that best approximates the motion of neighboring particles over a single timestep. These transformations are then composed to compute the total deformation gradient that describes the deformation around a particle over the course of the simulation. Given the deformation gradient we can apply arbitrary constitutive models and compute the resulting elastic forces. Our method has two primary advantages: we do not store or compare to an initial rest configuration and we work directly with the deformation gradient. The first advantage avoids poor numerical conditioning and the second naturally leads to a multiplicative model of deformation appropriate for finite deformations. We demonstrate our approach on a number of examples that exhibit a wide range of material behaviors.en_US
dc.description.sectionheadersDeformation, Contact, and Fractureen_US
dc.description.seriesinformationEurographics/ ACM SIGGRAPH Symposium on Computer Animationen_US
dc.identifier.doi10.1145/1599470.1599488en_US
dc.identifier.isbn978-1-60558-610-6en_US
dc.identifier.issn1727-5288en_US
dc.identifier.pages133-138en_US
dc.identifier.urihttps://doi.org/10.1145/1599470.1599488en_US
dc.publisherACM SIGGRAPH / Eurographics Associationen_US
dc.subjectI.3.7 [Computer Graphics]en_US
dc.subjectThree Dimensional Graphics and Realismen_US
dc.subjectAnimationen_US
dc.subjectI.6.8 [Simulation and Modeling]en_US
dc.subjectTypes of Simulationen_US
dc.subjectAnimation. [pointen_US
dc.subjectbased simulationen_US
dc.subjectnatural phenomenaen_US
dc.subjectphysicsen_US
dc.subjectbased animation.]en_US
dc.titleA Point-Based Method for Animating Elastoplastic Solidsen_US
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SCA 09: Eurographics/SIGGRAPH Symposium on Computer Animation