SHOCK SPECTRUM ANALYSIS AND SYNTHESIS METHOD AND APPARATUS

摘要

A shock spectrum analysis and synthesis method and apparatus which includes the use of a shock spectrum analyzer and a shock spectrum synthesizer. The analyzer is a special purpose analog computer which provides an automatic shock spectrum analysis of both the primary and residual spectrum by solving the equation of motion for a single degree of freedom, mass-spring-damping system and displaying the output signals on an oscilloscope or X-Y recorder. The synthesizer generates a variable transient electrical input to a vibration shaker system by generating a plurality of steady-state signals each having a different frequency and gating and summing the signals.