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摘要
Analytical ratchet limits of cylindrical pipelines subjected to several typical cyclic nonproportional loading combinations, such as internal pressure, tension, compression, moment, torsion, and thermal loading in practical engineering, were deduced theoretically according to the noncyclic method. The effects of the axial compression stress and radius ratio on the ratchet limit of structures were investigated intensively. Results revealed that the ratchet limit reduces significantly when axial compression stress is applied, while it clearly increases with the increment of radius ratio. Moreover, several Bree-like diagrams under the corresponding loading conditions of this paper were obtained, which can be used to conveniently estimate the ratchet limit of cylindrical pressure vessels and piping for engineering design.
- 出版日期2017-8
- 单位武汉工程大学
