Conference proceeding
Probabilistic elastic-plastic analysis of surface cracks in tubular structures
STRUCTURAL SAFETY AND RELIABILITY, VOLS. 1-3, pp.1279-1286
1998
Abstract
A new probabilistic model was developed for predicting elastic-plastic fracture response of circumferentially cracked pipes with finite-length, constant-depth, internal su;face flaws subject to remote bending loads. It involves engineering estimation of energy release rate, J-tearing theory for characterizing ductile fracture, and standard methods of structural reliability theory The underlying J-estimation model is based on deformation theory of plasticity, constitutive law characterized by power law model for stress-strain curve, and an equivalence criterion incorporating reduced thickness analogy for simulating system compliance due to the presence of a crack. New equations were developed to predict J-integral and were evaluated by comparing with available finite-element results from the current literature. Both analytical and simulation methods were formulated to determine the probabilistic characteristics of J. The same methods were used later to predict the probability of crack initiation and net-section collapse as a function of the applied load. Numerical examples are presented to illustrate the proposed methodology.
Details
- Title: Subtitle
- Probabilistic elastic-plastic analysis of surface cracks in tubular structures
- Creators
- S Rahman
- Contributors
- Y K Wen (Editor)
- Resource Type
- Conference proceeding
- Publication Details
- STRUCTURAL SAFETY AND RELIABILITY, VOLS. 1-3, pp.1279-1286
- Language
- English
- Date published
- 1998
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984239162502771
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