Simulation of cusp formation in mode II delamination

Sluys, L.J.; Van der Meer, F.P.

Simulation of cusp formation in mode II delamination

Conference paper (2014)

Authors

L.J. Sluys

F.P. Van der Meer

Department

Structural Engineering

Delamination Micromechanics Mode II fracture Cohesive zone analysis Thick level set method

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Published Date

22-06-2014

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Source:

Proceedings of the ECCM 16th European conference on composite materials, Seville, Spain, June 22 - 26, 2014. Authors version

Faculty

Civil Engineering and Geosciences

Department

Structural Engineering

Abstract

On the microlevel, cusps are formed during delamination crack growth under mode II loading conditions. In this work, two different approaches to simulate this process are presented. Firstly a cohesive zone method where cohesive segments are introduced between a pair of neighbouring elements when the traction between those elements exceeds the strength. And secondly the thick level set method, which allows for a staggered solution scheme. Both methods successfully predict the inclined cracks that form initially if constitutive laws are chosen carefully, but both have difficulties to simulate final failure.

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