ANALYSIS OF BRITTLE FRACTURE DUE TO COMPRESSIVE LOADING USING CENTER-CRACKED BRAZILIAN DISK

来源期刊：中南大学学报(英文版)1999年第1期

论文作者：Chen Feng Zhou Hongbin Sun Zongqi

文章页码：44 - 48

Key words：brittle fracture; stress intensity factor; Brazilian disk; compression

Abstract: The center-cracked Brazilian disk subjected to diametral compressive stress uniformly distributed along parts of its cylindrical surface is used to investigate combined mode fracture of brittle material. Afracture analysis is made of this specimen configuration. Explicit formulae for modeⅠand modeⅡstress intensity factor calculation are derived based on boundary integral equation method and related numerical solution given by Atkinson. The proposed formulae are valid in wide range of crack length a/R. This configuration can avoid splitting along load line usually occuring in Brazilian test and permit one to achieve easily pure modeⅡcrack growth (crack coplanar extension) and any combination of KⅠand KⅡby a simple alignment of crack orientation with respect to load line. SIF values from the present calculation and finite element solution are also given for comparison.