1962-01-01

Response of Nonlinear System to Shock Excitation 620317

Protection of structures, machinery, or equipment against ground shock is usually achieved by inserting a spring between the mass and the “ground,” and often nonlinear springs are used. To evaluate performance of this mechanical system, maximum responses are presented in the form of shock response spectra. Extension of the shock spectra concept to nonlinear systems is straightforward; but owing to the inapplicability of the principle of superposition, special devices are needed to obtain nondimensional response spectra that are independent of the amplitude of the response. These nondimensional spectra and their applications to analysis and design problems are discussed here.

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