Journal article
An interaction integral method for analysis of cracks in orthotropic functionally graded materials
Computational mechanics, Vol.32(1-2), pp.40-51
2003
DOI: 10.1007/s00466-003-0460-1
Abstract
This paper presents two new interaction integrals for calculating stress-intensity factors (SIFs) for a stationary crack in two-dimensional orthotropic functionally graded materials of arbitrary geometry. The method involves the finite element discretization, where the material properties are smooth functions of spatial co-ordinates and two newly developed interaction integrals for mixed-mode fracture analysis. These integrals can also be implemented in conjunction with other numerical methods, such as meshless method, boundary element method, and others. Three numerical examples including both mode-I and mixed-mode problems are presented to evaluate the accuracy of SIFs calculated by the proposed interaction integrals. Comparisons have been made between the SIFs predicted by the proposed interaction integrals and available reference solutions in the literature, generated either analytically or by finite element method using various other fracture integrals or analyses. An excellent agreement is obtained between the results of the proposed interaction integrals and the reference solutions.
Details
- Title: Subtitle
- An interaction integral method for analysis of cracks in orthotropic functionally graded materials
- Creators
- B. N RAO - Center for Computer-Aided Design, The University of Iowa, Iowa City, IA 52242-1000, United StatesS RAHMAN - Center for Computer-Aided Design, The University of Iowa, Iowa City, IA 52242-1000, United States
- Resource Type
- Journal article
- Publication Details
- Computational mechanics, Vol.32(1-2), pp.40-51
- Publisher
- Springer; Heidelberg; Berlin
- DOI
- 10.1007/s00466-003-0460-1
- ISSN
- 0178-7675
- eISSN
- 1432-0924
- Language
- English
- Date published
- 2003
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984064595002771
Metrics
13 Record Views