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Hardening and Softening Characteristics of a Piecewise Linear Isolator Under 1G Gravity

[+] Author Affiliations
X. Wang, G. T. Zheng

Tsinghua University, Beijing, China

Paper No. DSCC2013-3734, pp. V001T14A001; 7 pages
  • ASME 2013 Dynamic Systems and Control Conference
  • Volume 1: Aerial Vehicles; Aerospace Control; Alternative Energy; Automotive Control Systems; Battery Systems; Beams and Flexible Structures; Biologically-Inspired Control and its Applications; Bio-Medical and Bio-Mechanical Systems; Biomedical Robots and Rehab; Bipeds and Locomotion; Control Design Methods for Adv. Powertrain Systems and Components; Control of Adv. Combustion Engines, Building Energy Systems, Mechanical Systems; Control, Monitoring, and Energy Harvesting of Vibratory Systems
  • Palo Alto, California, USA, October 21–23, 2013
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 978-0-7918-5612-3
  • Copyright © 2013 by ASME


The frequency responses of a piecewise isolator mounted on a moving flexible base are investigated. A procedure, which is based on Equivalent Linearization method and transfer function, is proposed to study this two-degrees-of freedom nonlinear system. The influence of 1G gravity on the nonlinearity of the system frequency responses is investigated and presented in detail. It is shown that the piecewise stiffness may demonstrate both hardening and softening properties due to different amplitude, clearance and gravity.

Copyright © 2013 by ASME



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