The Matchstick Model for Anisotropic Friction Cones

K. Erleben, M. Macklin, S. Andrews, P. G. Kry

    2 Citations (Scopus)

    Abstract

    Inspired by frictional behaviour that is observed when sliding matchsticks against one another at different angles, we propose a phenomenological anisotropic friction model for structured surfaces. Our model interpolates isotropic and anisotropic elliptical Coulomb friction parameters for a pair of surfaces with perpendicular and parallel structure directions (e.g. the wood grain direction). We view our model as a special case of an abstract friction model that produces a cone based on state information, specifically the relationship between structure directions. We show how our model can be integrated into LCP and NCP-based simulators using different solvers with both explicit and fully implicit time-integration. The focus of our work is on symmetric friction cones, and we therefore demonstrate a variety of simulation scenarios where the friction structure directions play an important part in the resulting motions. Consequently, authoring of friction using our model is intuitive and we demonstrate that our model is compatible with standard authoring practices, such as texture mapping.

    Original languageEnglish
    JournalComputer Graphics Forum
    Number of pages12
    ISSN0167-7055
    DOIs
    Publication statusPublished - 1 Feb 2020

    Keywords

    • animation
    • modelling
    • natural phenomena animation
    • physically based animation
    • physically based modelling
    • • Computing methodologies → Physical simulation

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