Accession Number:

AD0733591

Title:

On the Interpretation and Application of Shock-test Results in Engineering Designs,

Descriptive Note:

Corporate Author:

GENERAL ELECTRIC CO PHILADELPHIA PA RE-ENTRY AND ENVIRONMENTAL SYSTEMS DIV

Personal Author(s):

Report Date:

1970-01-01

Pagination or Media Count:

8.0

Abstract:

A theoretical study of the characteristics of a shock spectrum which is measured in a shock test of equipment is presented. For this purpose, the machine and the equipment are represented by two systems connected in series an upper and a lower bound of the spectrum of the shock motion at the interface of the two systems are found using the Fourier transform and impedance method. The spectrum is shown to be affected by the characteristics of both systems. It is demonstrated that in a system containing negligible damping, hills would occur in the spectrum at the resonant frequencies of the combined system, whereas valleys spectrum dips would appear in the neighborhood of the fixed-base resonant frequencies of the equipment. The possible effects of damping and of the variation in the characteristics of the system on the phenomenon are also discussed. Author

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE