Numerical modeling of crack growth in quasibrittle structures under compressive fatigue

J. L. Le, J. Eliáš

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a numerical investigation on the mode-I crack propagation in quasibrittle structures under compressive cyclic loading based on a cohesive element model. The constitutive law of cohesive elements consists of a plastic-type model in compression and a strain-softening damage model in tension. Such a constitutive relation leads to the formation of a residual tensile zone at the crack tip upon unloading, which is responsible for cohesive fracture. The proposed model qualitatively agrees with the experimental observations. Furthermore, it is shown that the existing fatigue kinetics equation for tensile fatigue can be extended to compressive fatigue crack growth through a fracture process zone (FPZ) equivalence principle.

Original languageEnglish (US)
Title of host publicationLife-Cycle and Sustainability of Civil Infrastructure Systems - Proceedings of the 3rd International Symposium on Life-Cycle Civil Engineering, IALCCE 2012
Pages1296-1302
Number of pages7
StatePublished - Oct 17 2012
Event3rd International Symposium on Life-Cycle Civil Engineering, IALCCE 2012 - Vienna, Austria
Duration: Oct 3 2012Oct 6 2012

Publication series

NameLife-Cycle and Sustainability of Civil Infrastructure Systems - Proceedings of the 3rd International Symposium on Life-Cycle Civil Engineering, IALCCE 2012

Other

Other3rd International Symposium on Life-Cycle Civil Engineering, IALCCE 2012
CountryAustria
CityVienna
Period10/3/1210/6/12

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