A simplified numerical method for both lower and upper-bound limit analyses of 3-D structure has been developed in our previous work. The load-carrying capacities of 3-D pipelines with either one or two part-through defects of various geometrical configurations were calculated by the proposed method. In the present paper, the effects of the distance between two defects on the load-carrying capacity of pressure vessels are evaluated and discussed in details. Using curve-fitting schemes, an empirical formula for obtaining the load-carrying capacity of pressure vessels with double defects from that of pressure vessels with a single defect are proposed. Some engineering suggestions are presented simultaneously. All the numerical results confirm the applicability of the simplified numerical method.
- load carrying
- pressure vessels
- numerical method
Chen, H., & Shu, D. W. (2000). The effects of the distance between two defects on the load carrying capacity of pressure vessel. Journal of Pressure Vessel Technology, 122(2), 198-203. https://doi.org/10.1115/1.556171