Real-time rigid body simulation based on volumetric penalty method

Hasegawa, Shoichi; Fujii, Nobutada

doi:10.1109/haptic.2003.1191304

Cited by 27 publications

(16 citation statements)

References 18 publications

(13 reference statements)

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“…The geometry-based model can be divided into single collision point models, multiple collision point models and volumetric models. [44][45][46][47][48] In this particular study, the geometry-based model (single point) was chosen.…”

Section: Collision Responsementioning

confidence: 99%

Real-time multibody application for tree harvester truck simulator

Baharudin

Rouvinen²,

Korkealaakso³

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part K:

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A real-time simulator for a tree harvester has been developed for training in more effective vehicle and cutter operation and tree management. The equations of motion of the constrained mechanical system of the tree harvester are expressed using a recursive formulation. The hydraulic actuator modelling of the harvester is based on lumped fluid theory, in which the hydraulic circuit is divided into discrete volumes where pressures are assumed to be distributed equally, while pressure wave propagation in pipes and hoses is assumed to be negligible. For modelling purposes, valves are broken up into a number of adjustable restrictors, which can be modelled separately. The contact model used comprises two parts: collision detection and response. Collision detection identifies whether, when and where moving bodies may come in contact. Collision response prevents penetration when contact occurs and identifies how it should behave after collision. A penalty method is used in this study to establish object collision events. The major achievement of this study is combining these three modelling methods in the application of a real-time simulator.

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Section: Collision Responsementioning

confidence: 99%

Real-time multibody application for tree harvester truck simulator

Baharudin

Rouvinen²,

Korkealaakso³

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…For contact we place normal springs at collision sites detected by a one-time, precomputed adaptive signed distance field [Frisken et al 2000]. We model friction using a moving anchor spring method [Hasegawa et al 2003] that enables both static and dynamic friction modes. Contacting nodes are connected by springs to seeded anchors vertices placed on the contacting surface.…”

Section: Numerics Of Time Integrationmentioning

confidence: 99%

Sensitive couture for interactive garment modeling and editing

Umetani

Kaufman

Igarashi

et al. 2011

ACM SIGGRAPH 2011 Papers

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Figure 1: "2D or not 2D?" This timeless question is rendered moot by Sensitive Couture, our tool for simultaneous, synchronized modeling and editing of both a 2D garment pattern (top) and its corresponding 3D drape (bottom). AbstractWe present a novel interactive tool for garment design that enables, for the first time, interactive bidirectional editing between 2D patterns and 3D high-fidelity simulated draped forms. This provides a continuous, interactive, and natural design modality in which 2D and 3D representations are simultaneously visible and seamlessly maintain correspondence. Artists can now interactively edit 2D pattern designs and immediately obtain stable accurate feedback online, thus enabling rapid prototyping and an intuitive understanding of complex drape form.

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“…We then add a spring force consisting of two independent components: a normal spring with rest-length equal to the current normal distance, and a zero rest-length tangential spring that opposes sliding. This amounts to an anchor spring model with infinite friction [Hasegawa and Fujii 2003]. Along with penalty forces, we exploit the El Topo library's robust collision-processing module to avoid missing collisions at large time steps [Brochu and Bridson 2009].…”

Section: Contact and Adhesionmentioning

confidence: 99%

Discrete viscous sheets

Batty

Uribe

Audoly³

et al. 2012

TOG

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Figure 1: A thin sheet of molten chocolate enrobes a spherical truffle. As viscous sheets deform they exhibit behaviors that combine both the fluidity of liquids, and the buckling and wrinkling instabilities of thin materials, as evidenced here in the beautiful spindly legs. AbstractWe present the first reduced-dimensional technique to simulate the dynamics of thin sheets of viscous incompressible liquid in three dimensions. Beginning from a discrete Lagrangian model for elastic thin shells, we apply the Stokes-Rayleigh analogy to derive a simple yet consistent model for viscous forces. We incorporate nonlinear surface tension forces with a formulation based on minimizing discrete surface area, and preserve the quality of triangular mesh elements through local remeshing operations. Simultaneously, we track and evolve the thickness of each triangle to exactly conserve liquid volume. This approach enables the simulation of extremely thin sheets of viscous liquids, which are difficult to animate with existing volumetric approaches. We demonstrate our method with examples of several characteristic viscous sheet behaviors, including stretching, buckling, sagging, and wrinkling.

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Real-time rigid body simulation based on volumetric penalty method

Abstract: Abstract

Cited by 27 publications

References 18 publications

Real-time multibody application for tree harvester truck simulator

Real-time multibody application for tree harvester truck simulator

Sensitive couture for interactive garment modeling and editing

Discrete viscous sheets

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