文献类型：期刊文献

英文题名：Simulation Analysis of the Mutual Influence of the Stress Intensity Factor on the Multiple Blisters Caused by Hydrogen Induced Damage

作者：Ji, Congwei[1]; Zhang, Shaojie[1]; Wang, Hehui[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China

年份：2018

卷号：322

期号：4

外文期刊名：IOP Conference Series: Materials Science and Engineering

收录：EI(收录号：20181705058480)

语种：英文

外文关键词：Crack propagation - Growth rate - Hydrogen - ABAQUS - Finite element method

摘要：Hydrogen blisters are taken as the research object by using the finite element software ABAQUS. The stress intensity factors of blister cracks are numerically calculated at varying depths and different edge distances for established three-dimensional finite element models of single-blister and double-blisters, respectively. The mutual influence of the stress intensity factors of the multiple blisters is obtained. It shows that the blister crack is easier to expand when the crack is closer to inner wall of the cylinder. What's more, the crack growth rate increases firstly and then decreases as the increasing of the distance between two blisters cracks. The investigated result is of great reference value for predicting the trend of blister crack growth. ? Published under licence by IOP Publishing Ltd.