Adaptive fracture simulation of multi-layered thin plates

Abstract

The fractures of thin plates often exhibit complex physical behaviors in the real world. In particular, fractures caused by tearing are different from fractures caused by in-plane motions. In this paper, we study how to make thin-plate fracture animations more realistic from three perspectives. We propose a stress relaxation method, which is applied to avoid shattering artifacts after generating each fracture cut. We formulate a fracture-aware remeshing scheme based on constrained Delaunay triangulation, to adaptively provide more fracture details. Finally, we use our multi-layered model to simulate complex fracture behaviors across thin layers. Our experiment shows that the system can efficiently and realistically simulate the fractures of multi-layered thin plates.

Adaptive tearing and cracking of thin sheets

“…In particular, dynamic remeshing has been used for fluid simulation [Klingner et al 2006;Chentanez et al 2007;Ando et al 2013;Clausen et al 2013], viscoelastic bodies [Bargteil et al 2007;Wojtan and Turk 2008;Wicke et al 2010b] and thin sheet simulation [Hutchinson et al 1996;Simnett et al 2009;Narain et al 2012;Busaryev et al 2013]. For stiff materials, however, these methods exhibit abnormal stresses due to vertex jittering during remeshing.…”

“…Busaryev et al [Busaryev et al 2013] perform a relaxation step after each crack opening to approximate the change in the stress distribution. Their approach however does not take the crack momentum and collision constraints into account.…”

“…Their static meshing and simplistic fracture criterion can however lead to unrealistic fracture patterns. Busaryev et al [2013] use a layering model and dynamic remeshing to achieve high-resolution tearing of multi-layered sheets. However, the range of fracture behavior that method can realize is limited by the lack of plasticity and their fracture criterion being independent of bending.…”

Folding and crumpling adaptive sheets

“…However, none of the existing methods deal with jittering, which is imperceptible for cloth but significant in stiffer materials; they also do not provide a way to accommodate plasticity in their remeshing process. In other related work, Brochu et al [2012] demonstrated a robust collision handling technique for cloth simulation using adaptive meshes, and Busaryev et al [2013] applied adaptive refinement for highly detailed simulation of tearing fracture in thin sheets.…”

Accelerated Simulation of Brittle Objects for Interactive Applications

“…Considering a node-based measure of stress can be seen as non-consistent. Approaches based on node stress criteria for corotational FEM models have been used in some work (Busaryev et al, 2013) although they lack theoretical backgrounds.…”