There are insufficient details during preliminary stages of a pressure component design to warrant a comprehensive inelastic determination of the fracture energy release rate, J. A simplified formulation for estimating J, described in this paper, relies on a knowledge of the linear elastic stress-intensity parameter and the plastic collapse load. Subsequently, an expression for J is provided in terms of the r-node strain, which serves as an upper bound in the elastic-plastic regions for components subjected to mechanical loads. Estimates of J for several standard configurations have been obtained by inelastic FEA, and the comparisons with the corresponding robust estimates are reasonable.
Robust Estimation of Inelastic Fracture Energy Release Rate (J ): A Design Approach
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division, October 5, 1999; revised manuscript received September 18, 2000. Associate Editor: I. T. Kisisel.
Seshadri, R., and Wu, S. (September 18, 2000). "Robust Estimation of Inelastic Fracture Energy Release Rate (J ): A Design Approach ." ASME. J. Pressure Vessel Technol. May 2001; 123(2): 214–219. https://doi.org/10.1115/1.1357161
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