Proceedings: GI 2000

Fast and Controllable Simulation of the Shattering of Brittle Objects

Jeffrey Smith , Andrew Witkin , David Baraff

Proceedings of Graphics Interface 2000: Montréal, Québec, Canada, 15 - 17 May 2000, 27-34

DOI 10.20380/GI2000.05

  • BibTeXex

    @inproceedings@inproceedings{smith-gi2000,
     title = {Fast and Controllable Simulation of the Shattering of Brittle Objects},
     author = {Jeffrey Smith and Andrew Witkin and David Baraff},
     booktitle = {Proceedings of the Graphics Interface 2000 Conference, May 15-17, 2000, Montr{'{e}}al, Qu{'{e}}bec, Canada},
     url = {http://graphicsinterface.org/wp-content/uploads/gi2000-5.pdf},
     year = {2000},
     month = {May},
     pages = {27--34}
    }
    

Abstract

We present a method for the rapid and controllable simulation of the shattering of brittle objects under impact. An object to be broken is represented as a set of point masses connected by distance-preserving linear constraints. This use of constraints, rather than stiff springs, gains us a significant advantage in speed while still retaining fine control over the fracturing behavior. The forces exerted by these constraints during impact are computed using Lagrange multipliers. These constraint forces are then used to determine when and where the object will break, and to calculate the velocities of the newly created fragments. We present the details of our technique together with examples illustrating its use.