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Periodic response of a rigid block resting on a footing subjected to harmonic excitation

โœ Scribed by Kunihito Matsui; Masashi Iura; Toshimi Sasaki; Iku Kosaka

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
668 KB
Volume
20
Category
Article
ISSN
0098-8847

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โœฆ Synopsis

This study presents the dynamic behaviour of a rigid block which rests on a footing supported by a spring and a dashpot on a rigid base. The response of the rigid body is examined carefully when the base is excited by a harmonic force. It is found that a periodic motion appears in three different modes: stick-stick, stick-slip and slipslip. The conditions that initiate the stick-stick and s l i p l i p modes are derived in explicit forms and the maximum sliding displacement is also obtained analytically. Useful dimensionless parameters are proposed for the presentation of the dynamic behaviour. The accuracy of results is confirmed by the response history computed by the Nigam-Jennings method.

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