×

A 3D cohesive investigation on branching for brittle materials. (English) Zbl 1209.74065

Combescure, Alain (ed.) et al., IUTAM symposium on discretization methods for evolving discontinuities. Proceedings of the IUTAM symposium held in Lyon, France, September 4–7, 2006. Dordrecht: Springer (ISBN 978-1-4020-6529-3/hbk). IUTAM Bookseries 5, 139-151 (2007).
Summary: Recent dynamic crack propagation experiments in PMMA and soda lime glass pointed out some notable features of micro-branching instabilities in brittle materials, and their experiments raised a considerable interest for the brittle fracture dynamics. In this paper we present some numerical results on brittle fracture obtained by using cohesive theories of fracture. In the numerical calculations, the branching instability is a natural outcome of the explicit formulation. The cohesive model captures the basic features of experiments, such as the transition of the crack surface from smooth to hackled with increasing energy flux, and the power-law functional form of the profile of the crack branches.
For the entire collection see [Zbl 1124.74002].

MSC:

74S05 Finite element methods applied to problems in solid mechanics
74R10 Brittle fracture
PDFBibTeX XMLCite
Full Text: DOI