Paper Title:
Elastic-Plastic Analysis of Surface Crack in Round Bars under Torsion
  Abstract

An elastic-plastic finite element analysis (FEA) is used to determine the J-integral around the crack front of 3-dimensional semi-elliptical surface crack in a round bar under torsion loading. Crack geometries are based on the experimental observation. The present model is validated using the SIF under bending loading since no suitable SIF for torsion is available. Lack of numerical solution of elastic and plastic stress parameters under torsion are found. The FE J values are normalized by dividing with the estimation J value using a reference stress method. It is found that higher J values are obtained for deep cracks and the maximum J changed from the deepest point along the crack front to the outer point at the free surface when a/D > 0.2. J values can be estimated for all type of crack geometries under consideration with a correction factor, h1.

  Info
Periodical
Key Engineering Materials (Volumes 462-463)
Edited by
Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri
Pages
651-656
DOI
10.4028/www.scientific.net/KEM.462-463.651
Citation
A. E. Ismail, A. K. Ariffin, S. Abdullah, M. J. Ghazali, R. Daud, "Elastic-Plastic Analysis of Surface Crack in Round Bars under Torsion", Key Engineering Materials, Vols. 462-463, pp. 651-656, 2011
Online since
January 2011
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: Tomáš Denk, Vladislav Oliva, Aleš Materna
Abstract:A two-parameter constraint-based fracture mechanics approach is used to explain the effect of the constraint on the apparently anomalous...
307
Authors: Ozgur Inan, Serkan Dag, Fazil Erdogan
Abstract:In this study the three – dimensional surface cracking of a graded coating bonded to a homogeneous substrate is considered. The main...
373
Authors: Jun Si, Fu Zhen Xuan, Shan Tung Tu
Abstract:The interaction behavior of two non-aligned through-wall cracks in flat plates is investigated by the finite element method (FEM) under...
105
Authors: F. Ricci, F. Franco, Nicola Montefusco
Abstract:In this paper, the mechanisms of propagation of the damage in aluminum panels repaired with bonded composite patches of different mechanical...
597
Authors: Jun Ru Yang, Zhao Qian Li, Chuan Zhen Huang, Quan Wei Wang
Abstract:Basing on the theoretical study on the stress intensity factor (SIF) of the crack inclined across the interface of the cermet cladding part,...
213