Biaxial stress effects on the elastic-plastic crack-tip displacement fields

Meccanica ◽  
1990 ◽  
Vol 25 (2) ◽  
pp. 99-106
Author(s):  
Gianni Nicoletto
Keyword(s):  
Crack Tip ◽  
Biaxial Stress ◽  
Displacement Fields ◽  
Elastic Plastic ◽  
Stress Effects ◽  
Tip Displacement

Analysis and Simulation of Elastic-Plastic Fracture Parameters at Crack Tip under Biaxial Loading and Uniaxial Loading

2012 ◽  
Vol 166-169 ◽  
pp. 2883-2886 ◽  
Author(s):  
Zhong Xian Wang ◽  
Rui Liu
Keyword(s):  
Biaxial Loading ◽  
Crack Tip ◽  
Tensile Specimen ◽  
Biaxial Stress ◽  
Fracture Parameter ◽  
Single Edge ◽  
Elastic Plastic ◽  
Finite Distance ◽  
Fracture Theory ◽  
Loading Modes

Based on the J-A2 two-parameter elastic-plastic fracture theory and finite element numerical method, the elastic-plastic stress field ahead of the crack tip in a single edge cracked eccentric tensile specimen (the load-line is at a finite distance from the crack tip) was analyzed and compared with that of a center cracked large plate under biaxial loading. By using the Ritchie-Knott-Rice fracture criterion, a transformational relation between the two loading modes was obtained based on the J-A2 equivalent principle. As a result, the fracture parameter determined from a single edge cracked eccentric tensile specimen can be applied to the fracture analysis of a center cracked plate under biaxial stress.

An Improved CEM with Regard to the Crack-Tip

2014 ◽  
Vol 989-994 ◽  
pp. 908-912
Author(s):  
Yong Sheng Lin
Keyword(s):  
Stress Intensity ◽  
Crack Tip ◽  
Partition Of Unity ◽  
Displacement Fields ◽  
Basic Principles ◽  
Displacement Mode ◽  
Composite Element Method ◽  
Local Enrichment ◽  
Similar Accuracy ◽  
Tip Displacement

This paper expounds the basic principles of composite element method (CEM).In order to model the discontinuity of the displacement, the asymptotic crack tip displacement fields are added to the CEM approximation for the local enrichment by using the framework of partition of unity. Thus, the crack tip can be inserted into anywhere within the element. The crack-tip displacement mode is given, and some formulas are derived and established in a CEM program. The evaluation of stress intensity is discussed. Numerical simulations illustrate that the proposed algorithm has similar accuracy compared to the FEM, and it has advantage of convenient of pre-process.

Crack-Tip Displacement Fields and

2009 ◽  
pp. 135-135-19 ◽  
Author(s):  
MS Dadkhah ◽  
AS Kobayashi ◽  
WL Morris
Keyword(s):  
Crack Tip ◽  
Displacement Fields ◽  
Tip Displacement

scholarly journals Quantifying crack tip displacement fields with DIC

2010 ◽  
Vol 77 (11) ◽  
pp. 2063-2076 ◽  
Author(s):  
J.R. Yates ◽  
M. Zanganeh ◽  
Y.H. Tai
Keyword(s):  
Crack Tip ◽  
Displacement Fields ◽  
Tip Displacement
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