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http://dx.doi.org/10.3795/KSME-A.2005.29.8.1078

An Evaluation on the Effect of Reversed Plastic Zone on the Fatigue Crack Opening Behavior under 2-D Plane Stress  

Choi, Hyeon-Chang (동명정보대학교 메카트로닉스공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.29, no.8, 2005 , pp. 1078-1084 More about this Journal
Abstract
The relationship between fatigue crack opening behavior and the reversed plastic zone sizes is studied. 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 track tip area. The smaller element size than reversed plastic zone size is used fer evaluating the distribution of reversed plastic zone. In the author's previous results the FEA could predict the crack opening level, which crack tip elements were 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 considering crack opening level obtained by experimental results. It can be possible to predict the crack opening level from the reversed plastic zone size calculated by finite element method. We find that the experimental crack opening levels correspond with the opening values of contact nodes on the calculated reversed plastic zone of finite element simulation.
Keywords
Fatigue Crack Growth; Finite Element Analysis; Crack Opening Behavior; Prediction of Opening Level; Reversed Plastic Zone Size;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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