التفاصيل البيبلوغرافية
| العنوان: |
Investigative characteristics of viscoelastic aluminum plate under dynamic loads. |
| المؤلفون: |
Allamraju, K. Viswanath |
| المصدر: |
AIP Conference Proceedings; 2023, Vol. 2821 Issue 1, p1-5, 5p |
| مصطلحات موضوعية: |
ALUMINUM plates, RANDOM vibration, DAMPING capacity, STRUCTURAL optimization, ALUMINUM construction, DYNAMIC loads |
| مستخلص: |
Random vibration response on structures like plates is a very practical vibration generated on aerospace vehicles/aircrafts, Ground machinery, and different types of automotives etc., all these structures are man u factured by plate type profiles only. To increase the damping capacity of any size of plate structure implementation of constrained damping layer in the structures is the most effective method to reduce the vibration response from the external frequency loads. Here the Visco-elastic material is used as damping layer between two parent aluminium plates as sandwiched constrained layer. The visco-elastic material is bearing the shear loads more due to its intrinsic mechanical properties. Shear storage modulus of the whole plate structure is increased by resisting the shear stress developed during ex tern al random frequency loads acts on the plate. In this paper, based on optimization of structural geometry, the optimized damping layer thickness is found for the total thickness of the plate structure, and which in-turn reduces the mass or weight of the whole plate structure, and also increases the damping capacity of the plate structure and thereby modal analysis for random vibration response is made on four sides simply supported aluminium plate structure without damping layer and with constrained damping layer and measured at various wave modes of random vibration. Here the vibration levels are measured in terms Power spectral density (PSD) and overall vibration response is measured under the area of power spectrum plot in terms of root-mean-square value. The software program in MATLAB is generated for various modes of random vibration response in random frequency domain. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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