Paper Title:
On Accurate Numerical Evaluation of Stress Intensity Factors and T-Stress in Functionally Graded Materials
  Abstract

This paper revisits the interaction integral method to evaluate both the mixed-mode stress intensity factors and the T-stress in functionally graded materials under mechanical loading. A nonequilibrium formulation is developed in an equivalent domain integral form, which is naturally suitable to the finite element method. Graded material properties are integrated into the element stiffness matrix using the generalized isoparametric formulation. The type of material gradation considered includes continuum functions, such as an exponential function, but the present formulation can be readily extended to micromechanical models. This paper presents a fracture problem with an inclined center crack in a plate and assesses the accuracy of the present method compared with available semi-analytical solutions.

  Info
Periodical
Materials Science Forum (Volumes 492-493)
Edited by
Omer Van der Biest, Michael Gasik, Jozef Vleugels
Pages
403-408
DOI
10.4028/www.scientific.net/MSF.492-493.403
Citation
J. H. Kim, G. H. Paulino, "On Accurate Numerical Evaluation of Stress Intensity Factors and T-Stress in Functionally Graded Materials ", Materials Science Forum, Vols. 492-493, pp. 403-408, 2005
Online since
August 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jeong Ho Kim, Glaucio H. Paulino
Abstract:This paper presents numerical simulation of mixed-mode crack propagation in functionally graded materials by means of a remeshing algorithm...
409
Authors: Li Ma, Zhi Yong Wang, Lin Zhi Wu
Abstract:This paper addresses the numerical simulation of mixed-mode crack propagation in Functionally Graded Materials (FGMs) by means of eXtended...
121
Authors: Jie Jia, Yuan Yuan Chen, Ling Yu, Ming Bao Li
Chapter 2: Advanced Construction Materials
Abstract:A new interaction integral technique is derived for computation of mixed-mode stress intensity factors (SIFs) in nonhomogeneous materials...
605
Authors: Feng Nan Guo, Li Cheng Guo, Li Zhang, Hong Jun Yu, Xin Li
Chapter 1: Mechanics of Materials
Abstract:An interface crack problem in two nonhomogeneous plates under thermal loading is investigated. The interaction energy integral method (IEIM)...
160
Authors: He Guo Liu, Jun Lei, Peng Bo Sun, Qing Sheng Yang
Chapter 11: Engineering of Technological Processes
Abstract:In this paper, an interaction integral is applied to evaluate the crack-tip field intensity factors for piezoelectric cracks by using BEM....
1390