Author Archives: christopherbatty

SoftCon: Simulation and Control of Soft-Bodied Animals with Biomimetic Actuators

We present a novel and general framework for the design and control of underwater soft-bodied animals. The whole body of an animal consisting of soft tissues is modeled by tetrahedral and triangular FEM meshes. The contraction of muscles embedded in … Continue reading

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X-CAD: Optimizing CAD Models with Extended Finite Elements

Christian Hafner, Christian Schumacher, Espen Knoop, Thomas Auzinger, Bernd Bickel, Moritz Bächer We propose a novel generic shape optimization method for CAD models based on the eXtended Finite Element Method (XFEM). Our method works directly on the intersection between the … Continue reading

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Schur Complement-based Substructuring of Stiff Multibody Systems with Contact

Albert Peiret, Sheldon Andrews, József Kövecses, Paul G. Kry, Marek Teichmann Substructuring permits parallelization of physics simulation on multi-core CPUs. We present a new substructuring approach for solving stiff multibody systems containing both bilateral and unilateral constraints. Our approach is … Continue reading

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Implicit Density Projection for Volume Conserving Liquids

Tassilo Kugelstadt, Andreas Longva, Nils Thuerey, Jan Bender We propose a novel implicit density projection approach for hybrid Eulerian/Lagrangian methods like FLIP and APIC to enforce volume conservation of incompressible liquids. Our approach is able to robustly recover from highly … Continue reading

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Volume Maps: An Implicit Boundary Representation for SPH

Jan Bender, Tassilo Kugelstadt, Marcel Weiler, Dan Koschier In this paper, we present a novel method for the robust handling of static and dynamic rigid boundaries in Smoothed Particle Hydrodynamics (SPH) simulations. We build upon the ideas of the density … Continue reading

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Mandoline: Robust Cut-Cell Generation for Arbitrary Triangle Meshes

Michael Tao, Christopher Batty, Eugene Fiume, David IW Levin Although geometry arising “in the wild” most often comes in the form of a surface representation, a plethora of geometrical and physical applications require the construction of volumetric embeddings either of … Continue reading

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Consistent Shepard Interpolation for SPH-Based Fluid Animation

Stefan Reinhardt, Tim Krake, Bernhard Eberhardt, Daniel Weiskopf We present a novel technique to correct errors introduced by the discretization of a fluid body when animating it with smoothed particle hydrodynamics (SPH). Our approach is based on the Shepard correction, … Continue reading

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A Thermomechanical Material Point Method for Baking and Cooking

Mengyuan Ding, Xuchen Han, Stephanie Wang, Theodore Gast, Joseph Teran We present a Material Point Method for visual simulation of baking breads, cookies, pancakes and similar materials that consist of dough or batter (mixtures of water flour, eggs, fat, sugar … Continue reading

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Taichi: A Language for High-Performance Computation on Spatially Sparse Data Structures

Yuanming Hu, Tzu-Mao Li, Luke Anderson, Jonathan Ragan-Kelley, Fredo Durand 3D visual computing data are often spatially sparse. To exploit such sparsity, people have developed hierarchical sparse data structures, such as multi-level sparse voxel grids, particles, and 3D hash tables. … Continue reading

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Learning an Intrinsic Garment Space for Interactive Authoring of Garment Animation

Tuanfeng Y. Wang, Tianjia Shao, Kai Fu, Niloy Mitra Authoring dynamic garment shapes for character animation on body motion is one of the fundamental steps in the CG industry. Established workflows are either time and labor consuming (i.e., manual editing … Continue reading

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