High-resolution brittle fracture simulation with boundary elements Conference Paper

Author(s): Hahn, David; Wojtan, Chris
Title: High-resolution brittle fracture simulation with boundary elements
Affiliation IST Austria
Abstract: 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 intensity factors when propagating the high-resolution crack-front. Our system produces physics-based fracture surfaces with high spatial and temporal resolution, taking spatial variation of material toughness and/or strength into account. It also allows for crack initiation to be handled separately from crack propagation, which is not only more reasonable from a physics perspective, but can also be used to control the simulation. Separating the resolution of the crack-front from the resolution of the computational mesh increases the efficiency and therefore the amount of visual detail on the resulting fracture surfaces. The BEM also allows us to re-use previously computed blocks of the system matrix.
Keywords: boundary elements, brittle fracture, crack propagation
Conference Title: SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques
Volume: 34
Issue 4
Conference Dates: August 9 - 13, 2015
Conference Location: Los Angeles, CA, USA
ISBN: 1557-7368
Publisher: ACM  
Date Published: 2015-07-27
Start Page: Article number: 151
Sponsor: ERC Grant 638176
DOI: 10.1145/2766896
Open access: yes (repository)
IST Austria Authors
  1. Chris Wojtan
    34 Wojtan
  2. David Hahn
    4 Hahn
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