Implicit Contact Handling for Deformable Objects

We present an algorithm for robust and efficient contact handling of deformable objects. By being aware of the internal dynamics of the colliding objects, our algorithm provides smooth rolling and sliding, stable stacking, robust impact handling, and seamless coupling of heterogeneous objects, all in a unified manner. We achieve dynamicsawareness through a constrained dynamics formulation […]

Posted by christopherbatty on December 19th, 2008 | Comments Off on Implicit Contact Handling for Deformable Objects Posted in Cloth, Collisions, Deformables

Parallel Simulation of Inextensible Cloth

This paper presents an efficient simulation method for parallel cloth simulation. The presented method uses an impulse-based approach for the simulation. Cloth simulation has many application areas like computer animation, computer games or virtual reality. Simulation methods often make the assumption that cloth is an elastic material. In this way the simulation can be performed […]

Posted by christopherbatty on December 5th, 2008 | Comments Off on Parallel Simulation of Inextensible Cloth Posted in Cloth, Shells

A Geometric Deformation Model for Stable Cloth Simulation

We propose an adapted shape-matching approach for the efficient and robust simulation of clothing. A combination of two different cluster types is employed to account for high stretching and shearing, and low bending resistance. Due to the inherent handling of overshooting issues, the proposed shape-matching deformation model is robust. The proposed cluster types allow for […]

Posted by christopherbatty on December 5th, 2008 | Comments Off on A Geometric Deformation Model for Stable Cloth Simulation Posted in Cloth, Deformables, Shells

Seams and Bending in Cloth Simulation

Accurate modeling of bending behavior is one of the most important tasks in the field of cloth simulation. Bending stiffness is probably the most significant material parameter describing a given textile. Much work has been done in recent years to allow a fast and authentic reproduction of the effect of bending in cloth simulation systems. […]

Posted by christopherbatty on December 5th, 2008 | Comments Off on Seams and Bending in Cloth Simulation Posted in Cloth, Deformables, Shells

Hierarchical Position Based Dynamics

The Position Based Dynamics approach (PBD) recently introduced allows robust simulations of dynamic systems in real time. The simplicity of the method is due to the fact, that the solver processes the constraints one by one in a Gauss-Seidel type manner. In contrast to global Newton-Raphson solvers, the local solver can easily handle non-linear constraints […]

Posted by christopherbatty on December 2nd, 2008 | Comments Off on Hierarchical Position Based Dynamics Posted in Cloth, Collisions, Deformables

Two-way Coupling of Rigid and Deformable Bodies

We propose a framework for the full two-way coupling of rigid and deformable bodies, which is achieved with both a unified time integration scheme as well as individual two-way coupled algorithms at each point of that scheme. As our algorithm is two-way coupled in every fashion, we do not require ad hoc methods for dealing […]

Posted by christopherbatty on June 1st, 2008 | Comments Off on Two-way Coupling of Rigid and Deformable Bodies Posted in Cloth, Collisions, Deformables, Rigid bodies

Robust High-Resolution Cloth using Parallelism, History-Based Collisions and Accurate Friction

In this paper we simulate high resolution cloth consisting of up to 2 million triangles which allows us to achieve highly detailed folds and wrinkles. Since the level of detail is also influenced by object collision and self collision, we propose a more accurate model for cloth-object friction. We also propose a robust history-based repulsion/collision […]

Posted by christopherbatty on May 29th, 2008 | Comments Off on Robust High-Resolution Cloth using Parallelism, History-Based Collisions and Accurate Friction Posted in Cloth, Collisions

Simulating Knitted Cloth at the Yarn Level

Knitted fabric is widely used in clothing because of its unique and stretchy behavior, which is fundamentally different from the behavior of woven cloth. The properties of knits come from the nonlinear, three-dimensional kinematics of long, inter-looping yarns, and despite significant advances in cloth animation we still do not know how to simulate knitted fabric […]

Posted by christopherbatty on May 29th, 2008 | Comments Off on Simulating Knitted Cloth at the Yarn Level Posted in Cloth

Robust Treatment of Simultaneous Collisions

Robust treatment of complex collisions is a challenging problem in cloth simulation. Some state of the art methods resolve collisions iteratively, invoking a fail-safe when a bound on iteration count is exceeded. The best-known fail-safe rigidifies the contact region, causing simulation artifacts. We present a fail-safe that cancels impact but not sliding motion, considerably reducing […]

Posted by christopherbatty on May 19th, 2008 | Comments Off on Robust Treatment of Simultaneous Collisions Posted in Cloth, Collisions

Animating developable surfaces using nonconforming elements

We present a new discretization for the physics-based animation of developable surfaces. Constrained to not deform at all in-plane but free to bend out-of-plane, these are an excellent approximation for many materials, including most cloth, paper, and stiffer materials. Unfortunately the conforming (geometrically continuous) discretizations used in graphics break down in this limit. Our nonconforming […]

Posted by christopherbatty on April 30th, 2008 | Comments Off on Animating developable surfaces using nonconforming elements Posted in Cloth, Collisions, Shells
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