Elastic-Plastic Finite Element Analysis of the Effect of the Compressive Loading on the Crack Tip Plasticity

2006 ◽  
Vol 324-325 ◽  
pp. 73-76
Author(s):  
J.Z. Zhang ◽  
Xiao Dong He ◽  
X. Song ◽  
Shan Yi Du
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Plastic Zone ◽  
Significant Contribution ◽  
Crack Opening ◽  
Compressive Loading ◽  
Crack Tip ◽  
Element Analysis ◽  
Elastic Plastic ◽  
Crack Tip Plasticity

An elastic-plastic finite element analysis of the effect of the compressive loading on crack tip plasticity is presented. Two center-cracked panel specimens with different crack lengths are analysed under tension-compression loading. The size and shape of the crack tip reverse plastic zone, the crack opening profiles of the crack tip for short (0.1 mm) and long crack (2 mm) have been studied. The analysis shows that the compressive loading has a significant contribution towards the crack tip plasticity.

Elastic-Plastic Finite Element Analysis of the Effect of the Compressive Loading on Fatigue Crack Tip Parameters

2008 ◽  
Vol 392-394 ◽  
pp. 980-984 ◽  
Author(s):  
Y. Sha ◽  
Hui Tang ◽  
Jia Zhen Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Compressive Stress ◽  
Kinematic Hardening ◽  
Compressive Loading ◽  
Crack Tip ◽  
Crack Tip Opening Displacement ◽  
Opening Displacement ◽  
Element Analysis ◽  
Elastic Plastic

In this paper, a detailed elastic-plastic finite element analysis of the effect of the compressive loading on crack tip plasticity is studied based on the material’s kinematic hardening model. Five centre-cracked panel specimens with different crack lengths are analyzed. The analysis shows that in a tension-compression loading the maximum spread of the crack tip reverse plastic zone increases with the increase of the compressive stress and the near crack tip opening displacement decreases with the increase of the compressive stress at the same nominal stress intensity factor. The applied compressive stress is the main factor controlling the near crack tip parameters.

scholarly journals Finite element analysis of a crack tip in silicate glass: No evidence for a plastic zone

2008 ◽  
Vol 77 (17) ◽  
Author(s):  
T. Fett ◽  
G. Rizzi ◽  
D. Creek ◽  
S. Wagner ◽  
J. P. Guin ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Plastic Zone ◽  
Silicate Glass ◽  
Crack Tip ◽  
Element Analysis

The Prediction of Fatigue Crack Opening Behavior Using Cyclic Crack Tip Opening Displacement by Finite Element Analysis

2006 ◽  
Vol 324-325 ◽  
pp. 295-298 ◽  
Author(s):  
Hyeon Chang Choi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Crack ◽  
Crack Opening ◽  
Crack Tip ◽  
Crack Tip Opening Displacement ◽  
Opening Displacement ◽  
Element Analysis ◽  
Element Size ◽  
Crack Tip Opening

An elastic-plastic finite element analysis (FEA) is performed to examine the opening behavior of fatigue crack, where the contact elements are used in the mesh of the crack tip area. The relationship between fatigue crack opening behavior and cyclic crack tip opening displacement was studied in the previous study. In this paper, we investigate the effect of the element size when predict fatigue crack opening behavior using the cyclic crack tip opening displacement obtained from FEA. The cyclic crack tip opening displacement is well related to fatigue crack opening behavior.

A Study on the Relationship between Fatigue Crack Opening Behavior and Reversed Plastic Zone Size

2005 ◽  
Vol 297-300 ◽  
pp. 66-71 ◽  
Author(s):  
Hyeon Chang Choi
Keyword(s):  
Finite Element Analysis ◽  
Fatigue Crack ◽  
Plastic Zone ◽  
Crack Opening ◽  
Crack Tip ◽  
Plastic Zone Size ◽  
Zone Size ◽  
Element Analysis ◽  
Element Size ◽  
The Relationship

A relationship between fatigue crack opening behavior and the reversed plastic zone size is studied. An elastic-plastic finite element analysis (FEA) is performed to examine the opening behavior of fatigue crack. The contact elements in this analysis are adopted in the mesh of the crack tip area. The smaller element size than reversed plastic zone size is used for evaluating the distribution of reversed plastic zone. In the author’s previous results, the FEA could predict the crack opening level, which the size of crack tip elements was in proportion to the theoretical reversed plastic zone size. It is found that the calculated reversed plastic zone size is related to the theoretical reversed plastic zone size and crack opening level. The calculated reversed plastic zone sizes are almost equal to the reversed plastic zone size considering crack opening level obtained by experimental results. It is possible to predict the crack opening level from the reversed plastic zone size calculated by the FEA. We find that the experimental crack opening levels correspond with the opening values of crack tip contact nodes on the calculated reversed plastic zone.

An elastic-plastic finite element analysis of a compact tension specimen

1983 ◽  
Vol 18 (1) ◽  
pp. 69-75 ◽  
Author(s):  
A P Kfouri
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Crack Tip ◽  
Compact Tension ◽  
Compact Tension Specimen ◽  
Tension Specimen ◽  
Element Analysis ◽  
Elastic Plastic ◽  
Release Technique ◽  
Crack Tip Opening

Results from an elastic-plastic finite element analysis of a compact tension specimen (CTS) are presented and provide information on the growth of crack tip plastic zones, crack tip opening displacements, stresses and strains in the region of the crack tip, and Rice's J integral. The elastic-plastic crack separation energy rate GΔ is also evaluated when the crack extends at various loads by applying a crack tip node release technique.

Sign in / Sign up

Export Citation Format

Share Document