Dynamic fracture analysis of functionally graded materials under thermal shock loading by using the radial integration boundary element method

被引：13

作者：

Zheng, Baojing ^{[1
]}

Yang, Yang ^{[2
]}

Gao, Xiaowei ^{[3
]}

Zhang, Ch ^{[4
]}

机构：

[1] China Three Gorges Univ, Coll Hydraul & Environm Engn, Yichang 443002, Peoples R China

[2] Ankang Univ, Dept Engn Management, Ankang 725000, Peoples R China

[3] Dalian Univ Technol, Sch Aeronaut & Astronaut, Dalian 116024, Peoples R China

[4] Univ Siegen, Dept Civil Engn, D-57068 Siegen, Germany

来源：

COMPOSITE STRUCTURES | 2018年 / 201卷

基金：

中国国家自然科学基金;

关键词：

Coupled thermoelasticity; Radial integration boundary element method; Functionally graded materials; Dynamic fracture mechanics; Stress intensity factor; FREE-VIBRATION ANALYSIS; CRACK-TIP; BEAMS; BEM; FIELDS;

D O I：

10.1016/j.compstruct.2018.06.050

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A coupled thermoelastic radial integration boundary element method is applied to analyze the dynamic fracture mechanics of functionally graded materials (FGMs) subjected to the thermal shock loadings. The dynamic stress intensity factor (DSIF) of the crack tip is defined by the crack open displacement (COD) near the crack tip. The effects of material gradating direction versus crack direction and the coupling effects on the stress intensity factor are studied for two- and three-dimensional crack structures. The results demonstrate that the present method is very accuracy and efficiency to analyze the dynamic fracture mechanics for the cracked FGMs. The research also provides a theoretical basis for engineering design, and can extend the application range of the boundary element method.

引用

页码：468 / 476

页数：9

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