Rule-based Shape Optimization of Disks Subjected to Transient Thermoelastic Loading
| Autor: | Abdalla Elbella, J. Ke |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Engineering
business.industry Rotor (electric) Mechanical Engineering Rule-based system Mechanics Computer Graphics and Computer-Aided Design Finite element method Computer Science Applications law.invention Thermoelastic damping Mechanics of Materials law Calculus Disc brake Penalty method Shape optimization Transient (oscillation) business |
| Zdroj: | Journal of Mechanical Design. 116:419-422 |
| ISSN: | 1528-9001 1050-0472 |
| DOI: | 10.1115/1.2919395 |
| Popis: | This study introduces a rule-based geometric approach to the form optimization of axisymmetric components subjected to transient thermoelastic loading. A finite element algorithm is used for structural analysis and the computation of objective function and design constraints values. To satisfy a prescribed design objective, programmed geometric rules are used to iteratively modify the shape. The posed optimization problem is the minimization of the component’s weight while maintaining the stresses in the structure within allowable limits. A conventional optimization, the penalty function technique, coupled with the finite element algorithm is carried out for comparison. The effects of different loading conditions on component shape and performance are also investigated. A weight reduction of up to 57 percent is obtained for the casting shape of the disk. The results show the superiority of the rule-based approach to mathematical programming techniques. These results are obtained at lower computational costs and with accurate analysis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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