Structural optimization with member dimensional imperfections
| Autor: | Jarosław Latalski, W. Gutkowski |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Engineering
Control and Optimization business.industry Truss Minimum weight Robust optimization Structural engineering Computer Graphics and Computer-Aided Design Computer Science Applications Nominal size Buckling Control and Systems Engineering A priori and a posteriori Limit (mathematics) business Engineering design process Software |
| Zdroj: | Structural and Multidisciplinary Optimization. 30:1-10 |
| ISSN: | 1615-1488 1615-147X |
| DOI: | 10.1007/s00158-004-0383-2 |
| Popis: | The paper deals with the effect of dimensional imperfections of truss members on the minimum weight design of a structure. It is assumed that for each element its imperfections cannot exceed given a priori maximum values, called tolerances. The incorporation of the considered imperfections into the design is achieved by diminishing the limit values of state functions by the product of assumed imperfections and appropriate sensitivities. Therefore, the given method allows the introduction of tolerances into the design in a relatively simple way. In the submitted paper both members’ cross-section and length imperfections are discussed. The paper is illustrated with several design examples, considering cases with multiple loading conditions and buckling analysis. The achieved optimum solutions for designs with admissible tolerances show significant differences in structural weight and material distribution compared to ideal structures (i.e. having nominal dimensions). The calculations for designs with buckling analysis also reveal changes in material distribution compared to the designs without buckling constraints. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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