New damping material for structurally stiff sheet panels

Anuj Aggarwal; Yang Qian; Hameed Khan; Thorsen Alts

doi:10.1117/12.310626

16 June 1998 New damping material for structurally stiff sheet panels

Anuj Aggarwal, Yang Qian, Hameed Khan, Thorsen Alts

Proceedings Volume 3326, Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies; (1998) https://doi.org/10.1117/12.310626
Event: 5th Annual International Symposium on Smart Structures and Materials, 1998, San Diego, CA, United States

Abstract

In this paper we focus on the special problem encountered during the damping of structurally stiff automotive sheet metal panes. These structurally stiff panels exhibit high amplitude low frequency vibrations along with medium frequency damping problem. Due to the wide frequency range desired for vibration suppression, passive damping is considered for these stiff panels. A classical automotive sheet panel is forced to vibrate by a shaker and the frequency-response-function (FRF) between the frame and the sheet panel is measured. The low-frequency FRFs along with the overall damping loss for the medium frequency range are presented. Unlike conventional damping materials, the new 'structural damping layer' (SDL) utilizes the inelastic collision and friction damping mechanisms, SDL exhibits comparable or better damping performance over the extensional dampers on structurally stiff sheet panels. Moreover, these SDL materials exhibit interesting temperature and acceleration dependence characteristics.

Citation Download Citation

Anuj Aggarwal, Yang Qian, Hameed Khan, and Thorsen Alts "New damping material for structurally stiff sheet panels", Proc. SPIE 3326, Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies, (16 June 1998); https://doi.org/10.1117/12.310626

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