Numerical investigation on stable crack growth in plane stress
Yan, Cheng & Mai, Yiu-Wing (1998) Numerical investigation on stable crack growth in plane stress. International Journal of Fracture, 91(2), pp. 117-130.
Large deformation finite element analysis has been carried out to investigate the stress-strain fields ahead of a growing crack for compact tension .a=W D 0:5/ and three-point bend .a=W D 0:1 and 0:5/ specimens under plane stress condition. The crack growth is controlled by the experimental J -integral resistance curves measured by Sun et al. The results indicate that the distributions of opening stress, equivalent stress and equivalent strain ahead of a growing crack are not sensitive to specimen geometry. For both stationary and growing cracks, similar distributions of opening stress and triaxiality can be found along the ligament. During stable crack growth, the crack-tip opening displacement (CTOD) resistance curve and the cohesive fracture energy in the fracture process zone are independent of specimen geometry and may be suitable criteria for characterizing stable crack growth in plane stress.
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|Item Type:||Journal Article|
|Keywords:||stable crack growth, plane stress, cohesive fracture energy, CTOD-curve, specimen geometry, fracture mechanics, constraint, crack initiation and growth|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Metals and Alloy Materials (091207)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Solid Mechanics (091308)
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 1998 Springer Verlag|
|Copyright Statement:||The final publication is available at Springer via http://dx.doi.org/10.1023/A:1007568804469|
|Deposited On:||25 May 2014 23:10|
|Last Modified:||26 May 2014 21:45|
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