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25 Years of Forestry of the Republic of Srpska

December 7 - 9, 2017.

Sizing optimization of parametrically designed trusses

Author(s):
1. Nenad Petrović, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia
2. Nenad Marjanović, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia
3. Nenad Kostic, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia
4. Mirko Blagojević, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia
5. Miloš Matejić, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia


Abstract:
In this paper parametric modeling of sizing optimization truss models is developed. Sizing optimization of trusses views element cross-sections as variables with the goal of minimizing overall mass while maintaining equivalent stresses within acceptable ranges, as well as limiting displacement. In order to conduct such a process, models needs to be created with parameters, and outputs which can be used to create an objective function. Furthermore the models in each iteration of the optimization are subjected to finite element analyses to determine stress. Parametric models of standard 10 bar, 17 bar, and 25 bar trusses are created to facilitate optimization. The heuristic optimization method used is genetic algorithm. Optimization results obtained from these models are compared to those from literature and the initial model.

Key words:
truss,sizing optimization,parametric model,genetic algorithm

Thematic field:
Production and Computer-Aided Technologies

Date of abstract submission:
27.02.2017.

Conference:
13th International Conference on Accomplishments in Mechanical and Industrial Engineering

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