The stress intensity factors for a semicircular surface crack in the fiber at different cohesion and friction on the lateral surface

 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Mathematical Models and Computing Experiment in Material Science - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2012, #14
http://www.materials.kiev.ua/article/602

Abstract

The effects of cohesion and friction on the lateral surface of fibers on the stress intensity factor for a semicircular surface crack in a fiber in fiber-component material with a unidirectional structure are investigated. Calculations carried out by finite element method. The simulation of the fiber boundary splitting during the crack opening was conducted. In modeling the splitting used a bilinear representation of the complete deformation diagram for the material at the fiber boundary.


COHESIVE MODEL, SEMICIRCULAR SURFACE CRACK, SPLITTING OF BOUNDARIES, STRESS INTENSITY FACTOR