The minimum volume design problem of elastic perfectly plastic finite element structures subjected to a combination of fixed and perfect cyclic loads is studied. The design problem is formulated in such a way that incremental collapse is certainly prevented. The search for the structural design with the required limit behaviour is effected following two different formulations, both developed on the grounds of a statical approach: the first one operates below the elastic shakedown limit and is able to provide a suboptimal design; the second one operates above the elastic shakedown limit and is able to provide the/an optimal design. The Kuhn–Tucker conditions of the two problems provide useful information about the different behaviour of the obtained structures. An application concludes the paper; the comparison among the designs is effected, pointing out the different behaviour of the obtained structures as well as the required computational effort related to the numerical solutions.
|Data di pubblicazione:||2004|
|Titolo:||Computational procedures for plastic shakedown design of structures|
|Autori:||GIAMBANCO F; PALIZZOLO L; CAFFARELLI A|
|Tipologia:||Articolo su rivista|
|Citazione:||GIAMBANCO F, PALIZZOLO L, & CAFFARELLI A (2004). Computational procedures for plastic shakedown design of structures. STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, 2004, 317-329.|
|Digital Object Identifier (DOI):||10.1007/s00158-004-0402-3|
|Appare nelle tipologie:||01 - Articolo su rivista|