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Shakedown analysis of a composite cylinder with a cross-hole

Chen, Haofeng and Chen, Weihang and Li, Tianbai and Ure, James Michael (2011) Shakedown analysis of a composite cylinder with a cross-hole. Journal of Pressure Vessel Technology, 133 (3). ISSN 0094-9930

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Abstract

In this study, both the lower and upper bound shakedown limits of a closed-end composite cylinder with or without a cross-hole subject to constant internal pressure and a cyclic thermal gradient are calculated by the Linear Matching Method (LMM). Convergence for upper and lower bound shakedown limits of the composite cylinders is sought and shakedown limit interaction diagrams of the numerical applications identifying the regions of reverse plasticity limit and ratchet limit are presented. The effects of temperature-dependent yield stress, material discontinuities, composite cylinder thickness and the existence of the cross-hole on the shakedown limits are discussed for different geometry parameters. Finally, a safety shakedown envelope is created by formulating the shakedown limit results of different composite materials and cylinder thickness ratios with different cross-hole sizes.