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Title:MINLP optimization of a single-storey industrial steel building
Authors:ID Žula, Tomaž (Author)
ID Kravanja, Zdravko (Author)
ID Kravanja, Stojan (Author)
Files:URL http://www.sv-jme.eu/scripts/download.php?file=/data/upload/2008/SV-54-2008-10/SV_10_2008_7_Zula.pdf
Work type:Unknown
Typology:1.01 - Original Scientific Article
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:The paper presents the topology and standard sizes optimization of a single-storey industrial steel building, made from standard hot rolled I sections. The structure consists of main portal frames, connected with purlins. The structural optimization is performed by the Mixed-Integer Non-linear programming approach (MINLP). The MINLP performs a discrete topology and standard dimension optimization simultaneously with continuous parameters. Since the discrete/continuous optimization problem of the industrial building is non-convex and highly non-linear, the Modified Outer- Approximation/Equality-Relaxation (OA/ER) algorithm has been used for the optimization. Alongside the optimum structure mass, the optimum topology with the optimum number of portal frames and purlins as well as all standard cross-section sizes have been obtained. The paper includes the theoretical basis and a practical example with the results of the optimization.
Keywords:civil engineering, topology optimization, sizing optimization, nonlinear programming, MINLP
Year of publishing:2008
PID:20.500.12556/DKUM-26277 New window
ISSN on article:0039-2480
COBISS.SI-ID:12650774 New window
Publication date in DKUM:31.05.2012
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
COBISS.SI-ID:762116 New window

Secondary language

Title:MINLP optimiranje jeklene industrijske hale
Abstract:V prispevku je predstavljeno optimiranje topologije in standardnih prerezov jeklene industrijske hale, izdelane iz jeklenih standardnih vroče valjanih I prerezov. Konstrukcijo sestavljajo glavni okvirji na katere so pritrjene lege. Optimiranje je izvedeno z mešanim celoštevilskim nelinearnim programiranjem (MINLP). Pri MINLP poteka diskretno optimiranje topologije in standardnih izmer sočasno z računom zveznih parametrov. Za reševanje nekonveksnega, nelinearnega in kombiniranega diskretno-zveznega optimizacijskega problema jeklenih hal je uporabljen modificirani algoritem zunanje aproksimacije s sprostitvijo enačb (Modified OA/ER). Poleg optimalne mase konstrukcije so še izračunani optimalna topologija z optimalnim številom glavnih okvirjev in leg ter standardni prerezi vseh konstrukcijskih elementov.Prispevek vsebuje teoretični opis problema in praktični primer z rezultati optimiranja.
Keywords:gradbeništvo, industrijske hale, optimiranje topologije, optimiranje prerezov, nelinearno programiranje, MINLP


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