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Energy stability and fracture for frame rate rigid body simulations

Jonathan Su, Craig Schroeder, Ronald Fedkiw
2009 Proceedings of the 2009 ACM SIGGRAPH/Eurographics Symposium on Computer Animation - SCA '09  
We also introduce a technique for fast and realistic fracture of rigid bodies using a novel collision-centered prescoring algorithm.  ...  In this paper we present a novel algorithm for conserving both energy and momentum when advancing rigid body orientations, as well as a novel technique for clamping energy gain during contact and collisions  ...  We would like to thank Bill Dally and Christos Kozyrakis as well as Charbel Farhat for computing resources, and Jacob Leverich for helping us use those resources.  ... 
doi:10.1145/1599470.1599491 dblp:conf/sca/SuSF09 fatcat:lu7qo3mxnve25nupy4pv6wcqqy

Real-Time Simulation of Deformation and Fracture of Stiff Materials [chapter]

Matthias Müller, Leonard McMillan, Julie Dorsey, Robert Jagnow
2001 Eurographics  
The resulting deformations, or possible fractures, are computed based on internal stress tensors. Between collisions, disconnected objects are treated as rigid bodies.  ...  We present a stable hybrid method for simulating deformation and fracture of materials in real-time. In our system, the effects of impact forces are computed only at discrete collision events.  ...  For cells containing multiple rigid bodies, we look for intersections between the vertices of one body and the tetrahedral subvolumes of the other bodies.  ... 
doi:10.1007/978-3-7091-6240-8_11 fatcat:2xdvihxgerhabbrm6fnhegcwku

Energized Rigid Body Fracture

Xiaokai Li, Sheldon Andrews, Ben Jones, Adam Bargteil
2018 Proceedings of the ACM on Computer Graphics and Interactive Techniques  
Frames from an animation of an unfortunate and hollow, yet energetic, bunny fracturing on the ground. Compelling animation of fracture is a vital challenge for computer graphics.  ...  As a result, our method is able to animate energetic fracture scenarios with results comparable to continuum mechanics approaches, but with the computational efficiency of rigid body simulation.  ...  rigid-body simulators.  ... 
doi:10.1145/3203207 dblp:journals/pacmcgit/LiAJB18 fatcat:pzkrjyzmebcozm6vpxkkwmwbby

Biomechanical Comparison of Fixed-Angle Volar Plate Versus Fixed-Angle Volar Plate Plus Fragment-Specific Fixation in a Cadaveric Distal Radius Fracture Model

Steven I. Grindel, Mei Wang, Matthew Gerlach, Linda M. McGrady, Susan Brown
2007 Journal of Hand Surgery-American Volume  
Osteotomies to simulate an AO type C2, 3-part fracture pattern were created with a saw.  ...  The VPϩPP group also showed higher failure strength and construct rigidity than the VP group.  ...  a 3-dimensional rigid-body kinematics algorithm.  ... 
doi:10.1016/j.jhsa.2006.12.003 pmid:17275594 fatcat:c44mljamkjbmjhmq75rsbrafo4

Minimum energy asteroid reconfigurations and catastrophic disruptions

Daniel J. Scheeres
2009 Planetary and Space Science  
This paper discusses the system level constraints and conditions for these reconfigurations to occur as a body's spin rate changes.  ...  Dramatic alteration of an asteroid's morphology need not involve high energy impacts between bodies.  ...  Stability and Free Energy Once fission occurs, the stability of the system dynamics takes over.  ... 
doi:10.1016/j.pss.2008.03.009 fatcat:5lrdx2sdbfay7h6nlyyfja27wy

Deformable models

Demetri Terzopoulos, Kurt Fleischer
1988 The Visual Computer  
We develop physically-based models of deformable curves, surfaces, and solids for use in computer graphics.  ...  a simulated physical world.  ...  For fractures to propagate, the energy release rate as the fracture lengthens must exceed a critical value.  ... 
doi:10.1007/bf01908877 fatcat:2zuqjlmb6jfpnijg3njqq7sudi

Real-time deformation and fracture in a game environment

Eric G. Parker, James F. O'Brien
2009 Proceedings of the 2009 ACM SIGGRAPH/Eurographics Symposium on Computer Animation - SCA '09  
This paper describes a simulation system that has been developed to model the deformation and fracture of solid objects in a real-time gaming context.  ...  Details concerning parallel implementation, solver design, rendering method, and other aspects of the simulation are elucidated with the intent of providing a guide to others wishing to implement similar  ...  Berkeley for their help and support, and The Force Unleashed team at LucasArts for giving us the opportunity to work with them.  ... 
doi:10.1145/1599470.1599492 dblp:conf/sca/ParkerO09 fatcat:ukvqjjtx4zfyxhbd7dhvnigfge

Novel adaptive SPH with geometric subdivision for brittle fracture animation of anisotropic materials

Chen Li, ChangBo Wang, Hong Qin
2015 The Visual Computer  
In this paper, we articulate a novel particlecentric method to simulate the dynamics of brittle fracture for anisotropic materials.  ...  stress and energy analysis on the anisotropic SPH numerical integration to pinpoint fracture generation and propagation.  ...  Feibin Chen for his technical support on mechanics theory. The authors also wish to thank all the anonymous reviewers for their insightful comments that have helped improve this paper's quality.  ... 
doi:10.1007/s00371-015-1117-8 fatcat:7254jqfssze4jiaie7dfhq6ot4

MARSTRUCT benchmark study on nonlinear FE simulation of an experiment of an indenter impact with a ship side-shell structure

Jonas W. Ringsberg, Jörgen Amdahl, Bai Qiao Chen, Sang-Rai Cho, Sören Ehlers, Zhiqiang Hu, Jan M. Kubiczek, Mihkel Kõrgesaar, Bin Liu, Janis N. Marinatos, Karol Niklas, Joško Parunov (+9 others)
2018 Marine Structures  
The recent advancement of computational capacity, resources and commercial FE software have reduced the computation time and made it easy for engineers and researchers to carry out crashworthiness studies  ...  The paper presents the results from the fifteen FE simulations and the experiment.  ...  The indenter was modelled as a rigid body and it was allowed to move only in the direction perpendicular to the upper sheet with a constant displacement rate.  ... 
doi:10.1016/j.marstruc.2018.01.010 fatcat:h5tomjivgja4hn5pd2u2ii5qde

Seismic Behavior of Flexible Geogrid Wrap-Reinforced Soil Slope

Liang Huang, Weili He, Yujie Hou, Dun Liu, Bo Wang, Jiahua Zhu, Junjie Wang, Paolo Castaldo
2021 Advances in Civil Engineering  
The flexible geogrid reverse-packed reinforced earth structure can effectively limit the fracture of a slope body and improve the stability of the slope.  ...  This provides a theoretical basis for facilitating the engineering of flexible reinforced soil slopes.  ...  When the soil body becomes unstable owing to the destructive sliding mechanism, the energy dissipation rate in the system includes the energy dissipation rate of the reinforcement and that generated by  ... 
doi:10.1155/2021/8833662 fatcat:ifhbz67oabgipm3x56nxnm23cq

Impact Mechanics and High-Energy Absorbing Materials: Review

Pizhong Qiao, Mijia Yang, Florin Bobaru
2008 Journal of Aerospace Engineering  
This brief review is intended to help the readers in identifying starting points for research in modeling and simulation of impact problems and in designing energy absorbing materials and structures.  ...  We review different theoretical models (rigid-body dynamics, elastic, shock, and plastic wave propagation, and nonclassical or nonlocal models. and computational methods (finite-element, finite-difference  ...  This rigid-body dynamics model is based on the impulse-momentum law for rigid bodies, adjusted with phenomenological observations of elastic and inelastic restitution.  ... 
doi:10.1061/(asce)0893-1321(2008)21:4(235) fatcat:vnrmapasv5hxvo3qhygzaxybau

Real time dynamic fracture with volumetric approximate convex decompositions

Matthias Müller, Nuttapong Chentanez, Tae-Yong Kim
2013 ACM Transactions on Graphics  
smooth shading each piece stores one normal per vertex and face § Multiple normals per vertex are needed to render sharp edges Fracture SimulationEnergy Stability and Fracture for Frame Rate Rigid  ...  Fracture Simulation Fracture Simulation • A key idea of our fracture method is § to decompose objects into convex pieces and § to use convex fracture patterns cells • Clipping a compound mesh against a  ... 
doi:10.1145/2461912.2461934 fatcat:2idbgnjku5gghb4f3f3sdx7p7y

Numerical Model Study of Prototype Drop Tests on Cube and Cubipod® Concrete Armor Units Using the Combined Finite–Discrete Element Method

Giulio Scaravaglione, John-Paul Latham, Jiansheng Xiang
2021 Journal of Marine Science and Engineering  
The numerically simulated response to the Cubipod® test is then discussed in the context of a validation study.  ...  The calibration process and validation study provide insights into the sensitivity of breakage to tensile strength and collision angle, as well as a better understanding of the crushing and cracking damage  ...  Acknowledgments: The authors gratefully acknowledge the prototype drop test data provided by SATO (OHL Group) and the cooperation with industrial and academic colleagues Antonio Corredor and Liwei Guo  ... 
doi:10.3390/jmse9050460 doaj:7ed993a292f14a2da984f14ff353a195 fatcat:uvi7ktyz4zakden7z5nf5bk4rq

Page 1194 of American Society of Civil Engineers. Collected Journals Vol. 122, Issue EM12 [page]

1996 American Society of Civil Engineers. Collected Journals  
Criteria for Initiation of Slide, Rock, and Slide-Rock Rigid-Body Modes, Harry W. Shenton, III, EM July 96, p690-693.  ...  Fracture mechanics Analysis of Work-of-Fracture Method for Measuring Fracture Energy of Concrete, Zdenék P. BaZant, EM Feb. 96, p138-144.  ... 

Meshless deformations based on shape matching

Matthias Müller, Bruno Heidelberger, Matthias Teschner, Markus Gross
2005 ACM Transactions on Graphics  
The versatility of the approach in terms of object representations that can be handled, the efficiency in terms of memory and computational complexity, and the unconditional stability of the dynamic simulation  ...  Abstract We present a new approach for simulating deformable objects. The underlying model is geometrically motivated. It handles pointbased objects and does not need connectivity information.  ...  This project was funded by the Swiss National Commission for Technology and Innovation (CTI) project no. 6310.1 KTS-ET.  ... 
doi:10.1145/1073204.1073216 fatcat:5rad6pkfw5bule2jv63s2x3epe
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