Rigid-perfectly-plastic materials. Two extremal principles
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This chapter introduces the notion of rigid-perfect plasticity, and provides proofs of the extremum principles of applied loads and velocities. The variational principles are applied to generate the upper- and lower-bound theorems for collapse loads in rigid-perfect plasticity models. The method of sliding rigid blocks is presented for the solution of practical problems in forming operations and structural collapse. To facilitate such modelling the hodograph graphical device is also discussed.
1986 ◽
Vol 34
(6)
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pp. 617-635
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1952 ◽
Vol 7
(5)
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pp. 512-518
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2001 ◽
Vol 49
(2)
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pp. 363-399
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2014 ◽
Vol 1008-1009
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pp. 1134-1143
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