Finite Element Analysis of Minimum Plastic Zone Radius criterion for crack initiation direction under mixed mode loading

2009 ◽  
Author(s):  
C. M. Sharanaprabhu ◽  
S. K. Kudari ◽  
Alexander Korsunsky
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Crack Initiation ◽  
Plastic Zone ◽  
Mixed Mode ◽  
Mixed Mode Loading ◽  
Element Analysis ◽  
Zone Radius

scholarly journals Using finite element analysis to obtain plastic zones in the vicinity of the crack edges, under mixed mode loading conditions

2020 ◽  
Vol 310 ◽  
pp. 00028
Author(s):  
Matúš Turis ◽  
Oľga Ivánková
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Plastic Zone ◽  
Mixed Mode ◽  
Plastic Material ◽  
Three Dimensional ◽  
Global Coordinate System ◽  
Mixed Mode Loading ◽  
Element Analysis ◽  
Plastic Zones

This paper deals with both size and shape of plastic zone in the vicinity of the crack edges. Determination of plastic zone is proposed using the three-dimensional finite element analysis. Both, linear elastic and elastic-plastic material models are considered in this paper. Subsequently, results of these approaches are compared and their applicability is evaluated. Geometry considered is a beam with L-shaped cross section containing a crack, as it is described below. Mentioned beam is subjected to mixed mode loading condition, that is represented by variable forces in the direction of global coordinate system. Evolution of plastic zones is observed and evaluated around the crack edges of the profile.

An Experimental Technique for Studying Mixed-Mode Fatigue Crack Growth in Solder Joints

1996 ◽  
Vol 118 (2) ◽  
pp. 45-48 ◽  
Author(s):  
Daping Yao ◽  
Z. Zhang ◽  
J. K. Shang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Crack ◽  
Crack Growth ◽  
Mixed Mode ◽  
Solder Joints ◽  
Fatigue Loading ◽  
Mixed Mode Loading ◽  
Element Analysis ◽  
Solder Layer

Failures of solder joints often result from development of cracks under complex mixed-mode loading conditions. In this study, a flexural peel technique was developed to investigate the growth of cracks at the interface between solder and Cu substrate. The technique was based on a tri-layer solder/Cu joints, with the solder layer sand-wiched between two Cu layers of desired thicknesses. Finite element analysis was used to calculate the mixed-mode condition at the crack tip as a function of the thicknesses of Cu outerlayers and the solder interlayer. The application of this technique to studying interface crack growth under fatigue loading is demonstrated for eutectic solder joints.

Comparison of mixed mode fracture criteria in finite element analysis for matrix crack density estimation of laminated composites

2020 ◽  
Vol 55 (2) ◽  
pp. 277-289
Author(s):  
Mingqing Yuan ◽  
Haitao Zhao ◽  
Li Tian ◽  
Boming Zhang ◽  
Yanzhi Yang ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Density Estimation ◽  
Mixed Mode ◽  
Crack Density ◽  
Mode I ◽  
Mixed Mode Fracture ◽  
Fracture Criteria ◽  
Element Analysis ◽  
Mode Fracture

A mixed mode crack density estimation method based on the finite element analysis (FEA) for laminated composites is proposed and verified in this paper. The damaged properties of cracked ply are obtained using semi-analytical micro-mechanical method for the first time. The piecewise functions of the mode I and mode II energy release rates involving crack density are given based on Griffith’s energy principle and discrete damage mechanics (DDM). Any mixed mode fracture criteria could be simply applied to the FEA of the structure to calculate the initiation and evolution of the micro-cracks in the laminate. Mode I criterion, power law and B-K criterion are applied in the numerical examples to compare their performances in the crack density estimation. It has been concluded that the accuracy of the fracture toughness is more important than the choice of fracture criterion in crack density estimation.

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
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