Optimum Design of Segmented Passive-Constrained Layer Damping Treatment Through Genetic Algorithms
| Autor: | Raed I. Bourisli, Mohammed Al-Ajmi |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Mathematical optimization
Materials science Mechanical Engineering General Mathematics Loss factor Constrained-layer damping Measure (mathematics) Finite element method Viscoelasticity Vibration Mechanics of Materials Control theory Genetic algorithm General Materials Science Material properties Civil and Structural Engineering |
| Zdroj: | Mechanics of Advanced Materials and Structures. 15:250-257 |
| ISSN: | 1537-6532 1537-6494 |
| DOI: | 10.1080/15376490801907772 |
| Popis: | The optimization of geometry and material properties of Passive Constrained Layer Damping (PCLD) treatments has been the subject of many research efforts in recent years. In this study, a genetic algorithm is used to investigate the relationship of the viscoelastic layer thickness, the constraining layer thickness, and the number of cuts initiated in the PCLD treatment as they all relate to optimum damping of beams. Genetic algorithms mimic the biological evolution process where potential solutions compete for survival based on their relative fitness. As a measure of the fitness of the PCLD treatment, a finite element model is used to compute the loss factor for the first mode of vibration with the capability of segmenting the treatment. It is found that, while the loss factor increases asymptotically with the increase in the viscoelastic layer thickness, an optimum constraining layer thickness for each viscoelastic layer thickness exists. The number of cuts in the segmented treatment tends to decrease wi... |
| Databáze: | OpenAIRE |
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