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Finite-Element Simulation of Thin-Shell Fracture and Fragmentation

[+] Author Affiliations
Fehmi Cirak, Michael Ortiz

California Institute of Technology

Anna Pandolfi

Politecnico di Milano

Paper No. IMECE2004-59125, pp. 129-137; 9 pages
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Computers and Information in Engineering
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Computers and Information in Engineering Division
  • ISBN: 0-7918-4704-7 | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME


We develop a finite-element method for the simulation of dynamic fracture and fragmentation of thin-shells. The shell is spatially discretized with subdivision shell elements and the fracture along the element edges is modeled with a cohesive law. In order to follow the propagation and branching of cracks, subdivision shell elements are pre-fractured ab initio and the crack opening is constrained prior to crack nucleation. This approach allows for shell fracture in an in-plane tearing mode, a shearing mode, or a bending of hinge mode. The good performance of the method is demonstrated through the simulation of petalling failure experiments in aluminum plates.

Copyright © 2004 by ASME



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