• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Chen, Zhiying (Chen, Zhiying.) | Dai, Yanwei (Dai, Yanwei.) (学者:代岩伟) | Liu, Yinghua (Liu, Yinghua.)

收录:

EI Scopus SCIE

摘要:

To simulate structural crack propagation and predict fatigue life, the extended finite element method (XFEM) combined with the virtual crack closure technique (VCCT) is adopted in this paper. Firstly, the underlying principles of the XFEM-VCCT framework are elaborated comprehensively, mainly including the calculation of crack tip energy release rate based on VCCT, the simulation of element cracking utilizing the phantom nodes, and the computation of structural responses under cyclic loading through the direct cyclic analysis. In addition, to calculate the crack propagation length, an interpolation method to obtain the crack tip coordinates is developed based on tracking and locating the crack by the level set functions. Meanwhile, to compensate the defect that the fatigue life is often overestimated when dealing with the complex mode crack in complex structure through XFEM-VCCT, a simple improved algorithm based on the average rate concept is proposed without altering the XFEM-VCCT framework. Based on specific examples, the necessity and accuracy of the improved algorithm are fully verified by comparing with the original method, and the fatigue life predicted by the improved algorithm is more consistent with reality. Finally, this method is successfully applied to the simulation and analyses for a typical ship stiffened plate structure, demonstrating good engineering applicability.

关键词:

Fatigue crack propagation simulation Virtual crack closure technology Extended finite element method Energy release rate Improved fatigue life algorithm

作者机构:

  • [ 1 ] [Chen, Zhiying]Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China
  • [ 2 ] [Liu, Yinghua]Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China
  • [ 3 ] [Dai, Yanwei]Beijing Univ Technol, Inst Elect Packaging Technol & Reliabil, Dept Mech, Beijing 100124, Peoples R China

通讯作者信息:

查看成果更多字段

相关关键词:

来源 :

ENGINEERING FRACTURE MECHANICS

ISSN: 0013-7944

年份: 2024

卷: 310

5 . 4 0 0

JCR@2022

被引次数:

WoS核心集被引频次: 2

SCOPUS被引频次: 3

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 0

归属院系:

在线人数/总访问数:413/4952999
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司