CUED Publications database

A cohesive approach to thin-shell fracture and fragmentation

Cirak, F and Ortiz, M and Pandolfi, A (2005) A cohesive approach to thin-shell fracture and fragmentation. Computer Methods in Applied Mechanics and Engineering, 194. pp. 2604-2618. ISSN 0045-7825

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Abstract

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. © 2005 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Cohesive fracture Finite elements Petalling failure Shells Subdivision shape functions
Subjects: UNSPECIFIED
Divisions: Div D > Structures
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:26
Last Modified: 22 Dec 2014 01:15
DOI: 10.1016/j.cma.2004.07.048