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A work criterion for plastic collapse

Muscat, Martin and Mackenzie, D. and Hamilton, R. (2003) A work criterion for plastic collapse. International Journal of Pressure Vessels and Piping, 80 (1). pp. 49-58. ISSN 0308-0161

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Abstract

A new criterion for evaluating limit and plastic loads in pressure vessel design by analysis is presented. The proposed criterion is based on the plastic work dissipated in the structure as loading progresses and may be used for structures subject to a single load or a combination of multiple loads. Example analyses show that limit and plastic loads given by the plastic work criterion are robust and consistent. The limit and plastic loads are determined purely by the inelastic response of the structure and are not influenced by the initial elastic response: a problem with some established plastic criteria.