美国《工程索引》核心期刊
中国科学引文数据库核心期刊
国际刊号:ISSN 1005-1120
国内刊号:CN 32-1389/V
用户登录
  E-mail:  
  密  码:  
  作者 审稿  
  编辑 读者  
期刊向导
联系方式
  • 主管:工业和信息化部
  • 主办:南京航空航天大学
  • 国际刊号:ISSN 1005-1120
  • 国内刊号:CN 32-1389/V
  • 地址:南京市御道街29号
  • 电话:025-84892071
  • 传真:025-84892071
  • E-mail:tnuaa@nuaa.edu.cn
  • 邮编:210016
Zhao Zhenbo, Xu Xiwu, Guo Shuxiang.Crack Propagation Path in Two Directionally Graded Composites Subjected to Mixed Mode I+II Loading[J].南京航空航天大学学报英文版,2017,34(3):272-285
Crack Propagation Path in Two Directionally Graded Composites Subjected to Mixed Mode I+II Loading
  
DOI:
中文关键词:  
英文关键词:rack propagation; two directionally graded composites; extended finite element method(XFEM); interaction integral
基金项目:
作者单位
Zhao Zhenbo, Xu Xiwu, Guo Shuxiang State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of  Aeronautics and Astronautics, Nanjing 210016, P. R. China 
摘要点击次数: 76
全文下载次数: 43
中文摘要:
      
英文摘要:
      Crack propagation path in two directionally graded composites was investigated by the finite element method. A graded extended finite element method (XFEM) was employed to calculate displacement and stress fields in cracked graded structures. And a post processing subroutine of interaction energy integral was implemented to extract the mixed mode stress intensity factors (SIFs). The maximum hoop stress (MHS) criterion was adopted to predict crack growth direction based on the assumption of local homogenization of asymptotic crack tip fields in graded materials. Effects of material nonhomogeneous parameters on crack propagation paths were also discussed in detail. It is shown that the present method can provide relatively accurate predictions of crack paths in two directionally graded composites. Crack propagates in the decreasing direction of effective Young′s modulus. The shape and steepness of property gradient perpendicular to the crack surface have great influences on crack paths. Through redesigning material property reasonably, crack growth in graded material can be changed to improve mechanical behaviours of cracked structures.
查看全文  查看/发表评论  下载PDF阅读器
关闭

Copyright @2010-2015《南京航空航天大学学报英文版》编辑部

地址:南京市御道街29号        邮编:210016

电话:025-84892071      传真:025-84892071       E-mail:tnuaa@nuaa.edu.cn

您是本站第598648位访问者 本站今日一共被访问263

技术支持:北京勤云科技发展有限公司