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Abstract:
Seismic
responses of the body isolated by the resilient material with nonlinear
stiffness are investigated. Nonlinear stiffness characteristics of the
vibration isolating material are described by cubic polynomial function
of its deformation. The nonlinear dynamic equation is developed.
Nonlinear dynamic responses to a seismic excitation are analyzed by the
method of harmonic balance and numerical integration. Frequency response
equation and frequency response curves are derived. The technique and
conclusions developed in the paper are very useful to the accurate
design and effect analysis of vibration isolators.
Key words:
Vibration
isolation Nonlinear response Method of harmonic balance
CLC No: TH17 TH113
国家自然科学基金和湖南省自然科学基金资助项目. Received 20000526,
received in revised form 20001230
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