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International Journal of Fracture

, Volume 141, Issue 3–4, pp 549–559 | Cite as

Mixed mode cohesive law

  • J. L. Högberg
Original Paper

Abstract

A traction-separation relation to model the fracture process is presented. The cohesive law captures the linear elastic and softening behaviour prior to fracture. It also allows for different fracture parameters, such as fracture energy, strength and critical separation in different mode mixities. Thus, the fracture process in mode I (peel), in mode II (shear) or in mixed mode (a combination of peel and shear) can be modelled without the limitation of a common fracture energy in peel and shear. Examples are given in form of FE- implementations of the normalised cohesive law, namely for the Unsymmetrical Double Cantilever Beam (UDCB) specimen and the Mixed-mode double Cantilever Beam (MCB) specimen. Both specimens are adhesively bonded and loaded in mixed-mode.

Keywords

Cohesive law Fracture energy Traction-separation relation Mixed mode 

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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Mechanics of materialsUniversity of SkövdeSkovdeSweden

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