Author Archives: christopherbatty

An implicit Tensor-Mass solver on the GPU for soft bodies simulation

Xavier Faure, Florence Zara, Fabrice Jaillet, Jean-Michel Moreau The realistic and interactive simulation of deformable objects has become a challenge in Computer Graphics. In this paper, we propose a GPU implementation of the resolution of the mechanical equations, using a semi-implicit as well … Continue reading

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High-Resolution Simulation of Granular Material with SPH

Markus Ihmsen, Arthur Wahl, Matthias Teschner We present an efficient framework for simulating granular material with high visual detail. Our model solves the computationally and numerically critical forces on a coarsely sampled particle simulation. We incorporate a new frictional boundary force into … Continue reading

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An Efficient Surface Reconstruction Pipeline for Particle-Based Fluids

Gizem Akinci, Nadir Akinci, Markus Ihmsen, Matthias Teschner In this paper we present an efficient surface reconstruction pipeline for particle-based fluids such as smoothed particle hydrodynamics. After the scalar field computation and the marching cubes based triangulation, we post process the surface … Continue reading

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Geometric Numerical Integration of Inequality Constrained Nonsmooth Hamiltonian Systems

Danny Kaufman, Dinesh Pai We consider the geometric numerical integration of Hamiltonian systems subject to both equality and “hard” inequality constraints. As in the standard geometric integration setting, we target long-term structure preservation. Additionally, however, we also consider invariant preservation … Continue reading

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Interpenetration Free Simulation of Thin Shell Rigid Bodies

R. Elliot English, Michael Lentine, Ron Fedkiw We propose a new algorithm for rigid body simulation that guarantees each body is in an interpenetration free state, both increasing the accuracy and robustness of the simulation as well as alleviating the need … Continue reading

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Speculative Parallel Asynchronous Contact Mechanics

Samantha Ainsley, Etienne Vouga, Eitan Grinspun, Rasmus Tamstorf We extend the Asynchronous Contact Mechanics algorithm [Harmon et al. 2009] and improve its performance by two orders of magnitude, using only optimizations that do not compromise ACM’s three guarantees of safety, progress, … Continue reading

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PhD Thesis

Changxi Zheng, Cornell: Physics-Based Sound Rendering for Computer Animation

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Automated Constraint Placement to Maintain Pile Shape

Shu-Wei Hsu, John Keyser We present a simulation control to support art-directable stacking designs by automatically adding constraints to stabilize the stacking structure. We begin by adapting equilibrium analysis in a local scheme to find “stable” objects of the stacking structure. Next, … Continue reading

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Wetting Effects in Hair Simulation

Witawat Rungjiratananon, Yoshihiro Kanamori, Tomoyuki Nishita There is considerable recent progress in hair simulations, driven by the high demands in computer animated movies. However, capturing the complex interactions between hair and water is still relatively in its infancy. Such interactions are best … Continue reading

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Large-scale Fluid Simulation using Velocity-Vorticity Domain Decomposition

Abhinav Golas, Rahul Narain, Jason Sewall, Pavel Krajcevski, Pradeep Dubey, Ming Lin Simulating fluids in large-scale scenes with appreciable quality using state-of-the-art methods can lead to high memory and compute requirements. Since memory requirements are proportional to the product of … Continue reading

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