Energized Rigid Body Fracture

Xiaokai Li, Sheldon Andrews, Ben Jones, Adam Bargteil Compelling animation of fracture is a vital challenge for computer graphics. Methods based on continuum mechanics are physically accurate, but computationally expensive since they require computing elastic deformation. In many applications, this elastic deformation is imperceptible, so simulation methods based on rigid body dynamic with breakable constraints […]

Posted by christopherbatty on June 15th, 2018 | Comments Off on Energized Rigid Body Fracture Posted in Fracture, Rigid bodies

A Moving Least Squares Material Point Method with Displacement Discontinuity and Two-Way Rigid Body Coupling

Yuanming Hu, Yu Fang, Ziheng Ge, Ziyin Qu, Yixin Zhu, Andre Pradhana, Chenfanfu Jiang In this paper, we introduce the Moving Least Squares Material Point Method (MLS-MPM). MLS-MPM naturally leads to the formulation of Affine Particle-In-Cell (APIC) [Jiang et al. 2015] and Polynomial Particle-In-Cell [Fu et al. 2017] in a way that is consistent with […]

Posted by christopherbatty on April 29th, 2018 | Comments Off on A Moving Least Squares Material Point Method with Displacement Discontinuity and Two-Way Rigid Body Coupling Posted in Collisions, Deformables, Fluids, Fracture

Robust eXtended Finite Elements for Complex Cutting of Deformables

Dan Koschier, Jan Bender, Nils Thuerey In this paper we present a robust remeshing-free cutting algorithm on the basis of the eXtended Finite Element Method (XFEM) and fully implicit time integration. One of the most crucial points of the XFEM is that integrals over discontinuous polynomials have to be computed on subdomains of the polyhedral […]

Posted by christopherbatty on May 2nd, 2017 | Comments Off on Robust eXtended Finite Elements for Complex Cutting of Deformables Posted in Cloth, Deformables, Fracture

Interactive Paper Tearing

Camille Schreck, Damien Rohmer, Stefanie Hahmann We propose an efficient method to model paper tearing in the context of interactive modeling. The method uses geometrical information to automatically detect potential starting points of tears. We further introduce a new hybrid geometrical and physical-based method to compute the trajectory of tears while procedurally synthesizing high resolution […]

Posted by christopherbatty on March 17th, 2017 | Comments Off on Interactive Paper Tearing Posted in Fracture, Shells

Real-time Simulation of Large Elasto-Plastic Deformation with Shape Matching

Nuttapong Chentanez, Matthias Müller, Miles Macklin Shape matching is a popular method for simulating deformable objects in real time as it is fast and stable at large time steps. Although shape matching can simulate large elastic deformation and ductile fracturing, until now, they are limited to scenarios with relatively small plastic deformation. In this work, we present […]

Posted by christopherbatty on July 4th, 2016 | Comments Off on Real-time Simulation of Large Elasto-Plastic Deformation with Shape Matching Posted in Deformables, Fracture

Fast approximations for boundary element based brittle fracture simulation

David Hahn, Chris Wojtan We present a boundary element based method for fast simulation of brittle fracture. By introducing simplifying assumptions that allow us to quickly estimate stress intensities and opening displacements during crack propagation, we build a fracture algorithm where the cost of each time step scales linearly with the length of the crack-front. […]

Posted by christopherbatty on April 27th, 2016 | Comments Off on Fast approximations for boundary element based brittle fracture simulation Posted in Fracture, Rigid bodies

Interactively Cutting and Constraining Vertices in Meshes Using Augmented Matrices

Yu-Hong Yeung, Jessica Crouch, Alex Pothen We present a finite element solution method that is well-suited for interactive simulations of cutting meshes in the regime of linear elastic models. Our approach features fast updates to the solution of the stiffness system of equations to account for real-time changes in mesh connectivity and boundary conditions. Updates are […]

Posted by christopherbatty on March 26th, 2016 | Comments Off on Interactively Cutting and Constraining Vertices in Meshes Using Augmented Matrices Posted in Deformables, Fracture

Ductile Fracture for Clustered Shape Matching

Ben Jones, April Martin, Joshua A. Levine, Tamar Shinar, and Adam W. Bargteil In this paper, we incorporate ductile fracture into the clustered shape matching simulation framework for deformable bodies, thus filling a gap in the shape matching literature. Our plasticity and fracture models are inspired by the finite element literature on deformable bodies, but are […]

Posted by christopherbatty on January 6th, 2016 | Comments Off on Ductile Fracture for Clustered Shape Matching Posted in Deformables, Fracture

High-Resolution Brittle Fracture Simulation with Boundary Elements

David Hahn, Chris Wojtan We present a method for simulating brittle fracture under the assumptions of quasi-static linear elastic fracture mechanics (LEFM). Using the boundary element method (BEM) and Lagrangian crack-fronts, we produce highly detailed fracture surfaces. The computational cost of the BEM is alleviated by using a low-resolution mesh and interpolating the resulting stress […]

Posted by christopherbatty on May 19th, 2015 | Comments Off on High-Resolution Brittle Fracture Simulation with Boundary Elements Posted in Collisions, Deformables, Fracture, Rigid bodies

Continuum Foam: A Material Point Method for Shear-Dependent Flows

Yonghao Yue, Breannan Smith, Christopher Batty, Changxi Zheng, Eitan Grinspun We consider the simulation of dense foams composed of microscopic bubbles, such as shaving cream and whipped cream. We represent foam not as a collection of discrete bubbles, but instead as a continuum. We employ the Material Point Method (MPM) to discretize a hyperelastic constitutive […]

Posted by christopherbatty on May 15th, 2015 | Comments Off on Continuum Foam: A Material Point Method for Shear-Dependent Flows Posted in Deformables, Fluids, Fracture
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