Isolation design for systems with a flexible base and equipment

Dino Sciulli; Daniel J. Inman

doi:10.1117/12.310700

16 June 1998 Isolation design for systems with a flexible base and equipment

Dino Sciulli, Daniel J. Inman

Proceedings Volume 3327, Smart Structures and Materials 1998: Passive Damping and Isolation; (1998) https://doi.org/10.1117/12.310700
Event: 5th Annual International Symposium on Smart Structures and Materials, 1998, San Diego, CA, United States

Abstract

Current literature has not fully explored the choice of isolator mount frequency or isolator placement for flexible systems. It is commonly suggested that isolators should be designed with a low-mount frequency. It is shown that these isolators tend to perform best in an overall sense; however, mount frequencies designed between system modes tend to have a coupling effect. That is, the lower frequencies have such a strong interaction between each other that when isolator damping is present, multiple system modes are attenuated. Also, for low-mount frequency designs, the first natural frequency can shift as much as 15.6%. For a mid-mount frequency design, the shift of the first three modes can be as high as 34.9%, 26.6%, and 11.3%, respectively. Also, when the base and system are flexible, isolator placement becomes a critical issue. There can be as much as 16% difference in the first mode for low-frequency mount design and as high as 25% for a mid-frequency mount design.

Citation Download Citation

Dino Sciulli and Daniel J. Inman "Isolation design for systems with a flexible base and equipment", Proc. SPIE 3327, Smart Structures and Materials 1998: Passive Damping and Isolation, (16 June 1998); https://doi.org/10.1117/12.310700

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