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On elastic energy of structures under proportional loading
Arch. Mech. 50 (5), 849-863, 1998
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Abstract
The paper concerns the proportional loading of structures made of time independent materials. It has been shown that the elastic energy can be a decreasing function of the load multiplier if unilateral constraints are introduced into an elastic-plastic structure. Results obtained in the work seem to be of importance for the theory of structures and may have some theoretical implications. An exhaustive example illustrates the theory.