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Title:The multilevel MINLP optimization approach to structural synthesis: the simultaneous topology, material, standard and rounded dimension optimization
Authors:Kravanja, Stojan (Author)
Šilih, Simon (Author)
Kravanja, Zdravko (Author)
Files:URL http://dx.doi.org/10.1016/j.advengsoft.2005.03.004
 
Language:English
Work type:Unknown ()
Typology:1.01 - Original Scientific Article
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:The paper describes the simultaneous topology, material, standard and rounded dimension optimization of mechanical structures, performed by the Mixed-Integer Non-linear Programming (MINLP) approach. Beside the generation of an MINLP mechanical superstructure, the development of a general multilevel MINLP formulation for a mechanical superstructure is presented. The consideration of the discrete materials as well as standard and particularly rounded dimensions in structural synthesis significantly increases the combinatorics of the discrete optimization, which as a result may become too difficult to solve. A Linked Multilevel Hierarchical Strategy (LMHS) has been introduced for the solving of such large combinatorial problems. In order to decrease the effect of non-convexities, the Modified Outer-Approximation/Equality-Relaxation (OA/ER) algorithm has been applied. Four numerical examples of different complexities are presented to illustrate the proposed multilevel MINLP optimization approach: the optimization of two steel trusses, a composite I beam and a hydraulic steel roller gate Intake gate, erected in Aswan II, Egypt.
Keywords:structural optimization, structural synthesis, MINLP, topology opitmization, material optimization, discrete variable optimization, multilevel MINLP strategy, truss, composite beam, roller gate
Year of publishing:2005
UDC:624.074.5:519.6
ISSN on article:0965-9978
COBISS_ID:9532182 Link is opened in a new window
NUK URN:URN:SI:UM:DK:WZXOTDRP
Views:1622
Downloads:60
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Categories:Misc.
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Record is a part of a journal

Title:Advances in engineering software
Shortened title:Adv. eng. softw.
Publisher:Elsevier Applied Science
ISSN:0965-9978
COBISS.SI-ID:34540032 New window

Secondary language

Language:English
Keywords:optimiranje konstrukcij, sinteza konstrukcij, MINLP, optimizacija topologije, optimizacija materialov, diskretno optimiranje, večstopenjska MINLP strategija, paličja, sovprežni nosilec, tablasta zapornica


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