NDLI: Study of the relationship between J-integral and COD parameters under mixed mode I + II loading in aluminum alloy Ly 12

Content Provider	Springer Nature Link
Author	Jiangbo, Sha Jun, Sun Pin, Zuh Zengjie, Deng Huijui, Zhou
Copyright Year	2000
Abstract	In this paper, the relationship between the J-integral and COD under mixed mode I+II loading was proposed and investigated. The J-integral was calculated by the Finite Element Method, and COD was defined by Rice`s model and measured by a duplicating method in an aluminum alloy Ly12. The critical values of the J-integral and COD for a stable mixed crack initiation were also determined by a resistance curve. It shows that: (1) the mixed J-integral, J M, and the mixed COD satisfy the relations of J M=dn⋅σ0⋅CTOD+ds⋅τ0⋅CTSD and J M=d⋅σyield⋅COD, where dn, ds and d are coefficients; CTOD and CTSD are the mode I and mode II components of COD, respectively; σ0 and τ0 are the tensile and shear stresses at the crack tip strip, respectively, and (2) the initiation values of the J-integral and COD of mixed stable crack growth increase with an increasing mode II component, the J IIC value is 2 times greater than that of J IC, and the CODi for a pure mode II crack is 6 times greater than that of CODi for a pure mode I crack.
Starting Page	409
Ending Page	423
Page Count	15
File Format	PDF
ISSN	03769429
Journal	International Journal of Fracture
Volume Number	104
Issue Number	4
e-ISSN	15732673
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2000-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Characterization and Evaluation Materials Mechanics Mechanical Engineering Automotive and Aerospace Engineering Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Computational Mechanics Modeling and Simulation

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