Negative-stiffness-mechanism vibration isolation systems

David L. Platus

doi:10.1117/12.56823

1 February 1992 Negative-stiffness-mechanism vibration isolation systems

David L. Platus

Proceedings Volume 1619, Vibration Control in Microelectronics, Optics, and Metrology; (1992) https://doi.org/10.1117/12.56823
Event: SPIE Technical: OPTCON '91, 1991, San Jose, CA, United States

Abstract

A new type of vibration isolation system offers significant improvement in performance compared with current state-of-the-art systems. The system uses negative-stiffness mechanisms to cancel the stiffness of a spring suspension. Reduction in stiffness magnifies the damping inherent in the system creating a practical means for achieving high hysteretic damping. The result is a simple, compact 6-DOF passive isolation system capable of system resonant frequencies below 0.2 Hz and first isolator resonances above 100 Hz. Resonant transmissibilities below 1.4 can be achieved with transmissibilities at the higher frequencies close to that of the ideal undamped system. The negative-stiffness mechanisms can cancel the stiffness of power cables, hoses or other lines connected to payloads. This paper develops the theory, describes typical configurations and summarizes test data with prototype systems.

Citation Download Citation

David L. Platus "Negative-stiffness-mechanism vibration isolation systems", Proc. SPIE 1619, Vibration Control in Microelectronics, Optics, and Metrology, (1 February 1992); https://doi.org/10.1117/12.56823

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available