Publication

Modeling & Simulation, Testing & Validation (MSTV)
2019

WAVEFORM SYNTHESIS FOR SHOCK RESPONSE SPECTRUM REPLICATION, APPLIED TO GROUND VEHICLE COMPONENT TESTING

by Samuel Allen

Abstract

This paper describes the motivation and process taken for developing an acceleration time history that has a shock response spectrum that matches the MIL-STD 810 defined shock response spectrum. The mathematics from the ISO standard 18431-4 are presented, as well as the procedures and graphs from the MIL-STD. The time history is synthesized from a sum of basis-functions, parameterized by variable amplitudes and delays. An optimization routine then modifies an array of these optimization parameters to find a time history that has a shock response spectrum that matches a reference shock response. All figures are presented in Appendix A for clarity. The equations developed and computer code written to perform this task are explained, and the full code is provided in Appendix B.