Point based animation of elastic, plastic and melting objects

M. Müller, R. Keiser, A. Nealen, M. Pauly, M. Gross, M. Alexa

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We present a method for modeling and animating a wide spectrum of volumetric objects, with material properties anywhere in the range from stiff elastic to highly plastic. Both the volume and the surface representation are point based, which allows arbitrarily large deviations form the original shape. In contrast to previous point based elasticity in computer graphics, our physical model is derived from continuum mechanics, which allows the specification of common material properties such as Young's Modulus and Poisson's Ratio. In each step, we compute the spatial derivatives of the discrete displacement field using a Moving Least Squares (MLS) procedure. From these derivatives we obtain strains, stresses and elastic forces at each simulated point. We demonstrate how to solve the equations of motion based on these forces, with both explicit and implicit integration schemes. In addition, we propose techniques for modeling and animating a point-sampled surface that dynamically adapts to deformations of the underlying volumetric model.

    Original languageEnglish (US)
    Title of host publicationComputer Animation 2004 - ACM SIGGRAPH / Eurographics Symposium on Computer Animation
    PublisherAssociation for Computing Machinery, Inc
    Pages141-151
    Number of pages11
    ISBN (Print)3905673142, 9783905673142
    DOIs
    StatePublished - Aug 27 2004
    Event2004 ACM SIGGRAPH / Eurographics Symposium on Computer Animation, SCA 2004 - Grenoble, France
    Duration: Aug 27 2004Aug 29 2004

    Publication series

    NameComputer Animation 2004 - ACM SIGGRAPH / Eurographics Symposium on Computer Animation

    Other

    Other2004 ACM SIGGRAPH / Eurographics Symposium on Computer Animation, SCA 2004
    CountryFrance
    CityGrenoble
    Period8/27/048/29/04

    ASJC Scopus subject areas

    • Computer Graphics and Computer-Aided Design
    • Human-Computer Interaction
    • Software

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  • Cite this

    Müller, M., Keiser, R., Nealen, A., Pauly, M., Gross, M., & Alexa, M. (2004). Point based animation of elastic, plastic and melting objects. In Computer Animation 2004 - ACM SIGGRAPH / Eurographics Symposium on Computer Animation (pp. 141-151). (Computer Animation 2004 - ACM SIGGRAPH / Eurographics Symposium on Computer Animation). Association for Computing Machinery, Inc. https://doi.org/10.1145/1028523.1028542