Prediction of shock response spectrum using transfer function synthesis method for spacecraft component shock test

Abstract

In the shock testing of spacecraft components, alternative methods are used where the shock source is different from the actual one, such as the mechanical impact method. Adjusting the shock response spectrum (SRS) in these tests to desired values is a difficult task that requires considerable expertise. Therefore, we propose a new SRS adjustment concept in which a structure is inserted between the base plate of the shock tester and the test specimen. This method alters the propagation characteristics of the vibration into the specimen. Due to its easy implementation, this method can also be applied to other mechanical shock testers in use. And this method has good affinity with the substructure synthesis method and can predict the test level in advance. This paper presents the prediction of shock test levels using transfer function synthesis method.