Summary
Shakedown criteria for plates under moving patch loads are derived using a normal moment yield criterion. The formulation results in the determination of incremental collapse and alternating plasticity limits independent of each other. In developing a numerical method, the plate and the load program are discretised and shakedown criteria are linearised. The incremental collapse limit is computed using a linear programming procedure and knowing the active constraints the feasible collapse mechanism can be determined approximately. A simple inequality is used to obtain the alternating plasticity limit. The upper bound formulation is used to obtain the shakedown limit by trial yield line collapse mechanisms, providing a quicker method of calculation for simple cases.
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© 1981 Springer-Verlag, Berlin, Heidelberg
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Grundy, P., Alwis, W.A.M. (1981). Shakedown of Plates under Moving Patch Loads. In: Hult, J., Lemaitre, J. (eds) Physical Non-Linearities in Structural Analysis. International Union of Theoretical and Applied Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-81582-9_14
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DOI: https://doi.org/10.1007/978-3-642-81582-9_14
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