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Impulse‐based rigid body interaction in SPH
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- Authors
- Seung Taik Oh, Young Hee Kim, Byung Seok Roh
- Issue Date
- 2009-06
- Citation
- Computer Animation and Virtual Worlds, v.20, no.2-3, pp.215-224
- ISSN
- 1546-4261
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- Abstract
- A new boundary force is proposed to solve rigid body interaction in SPH (Smoothed Particle Hydrodynamics). The new boundary force is impulse-based rather than potential-based. The impulse is converted to a boundary force with a fundamental observation that the impulse is a momentum change which is a result of a force acting on an object during a time interval. Our new impulse-based boundary force gives more stable and accurate results in all kinds of rigid body interactions, especially in rigid-rigid interaction since our boundary force faithfully reflects the dynamic features of rigid body. With our impulse-based boundary force, SPH fluid solver is capable of full two way interaction of fluid and rigid body and it turns to be a particle-based rigid body solver if only rigid bodies are simulated without fluid. © 2009 John Wiley & Sons, Ltd.
- KSP Keywords
- Body Interaction, Boundary force, Dynamic features, Rigid bodies, Stable and accurate, Time interval, smoothed particle hydrodynamics