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    Quadratic Contact Energy Model for Multi-impact Simulation

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    Date
    2015
    Author
    Zhang, Tianxiang
    Li, Sheng
    Manocha, Dinesh
    Wang, Guoping
    Sun, Hanqiu
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    Abstract
    Simultaneous multi-impact simulation is a challenging problem that frequently arises in physically-based modeling of rigid bodies. There are several physical criteria that should be satisfied for rigid body collision handling, but existing methods generally fail to meet one or more of them. In order to capture the inner process of potential energy variation, which is the physical foundation of collisions in a multi-impact system, we present a novel quadratic contact energy model for rigid body simulation. By constructing quadratic energy functions with respect to the impulses, post-impact reactions of rigid bodies can be computed efficiently. Our model can satisfy the physical criteria and can simulate various natural phenomena including the wave effect. Also, our model can be easily combined with Linear Complementary Problem (LCP) and can provide feasible results with any restitution coefficient. In practice, our model can solve the simultaneous multi-impact problem efficiently and robustly, and we highlight its performance on different benchmarks.
    BibTeX
    @article {10.1111:cgf.12752,
    journal = {Computer Graphics Forum},
    title = {{Quadratic Contact Energy Model for Multi-impact Simulation}},
    author = {Zhang, Tianxiang and Li, Sheng and Manocha, Dinesh and Wang, Guoping and Sun, Hanqiu},
    year = {2015},
    publisher = {The Eurographics Association and John Wiley & Sons Ltd.},
    DOI = {10.1111/cgf.12752}
    }
    URI
    http://dx.doi.org/10.1111/cgf.12752
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    Theme by @mire NV
    System hosted at  Graz University of Technology.
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