摘要：

Shock response spectrum analysis is important for spacecraft instrument design, different Q values between given shock response spectrum and instruments may cause a considerable error. To get an appropriate shock response spectrum for a certain instrument, conversion is made for shock spectra with different Q values in this paper using hill-climbing optimization method. Consistency of the optimized shock spectrum and the specified shock spectrum is addressed in this paper, physical limitations of the shaker systems are not in consideration. Parameters are optimized according to the importance on the shock spectrum in sequence and the results shows that making optimization for amplitude can bring high precision. Runge-Kutta method with an appropriate time step is used to discrete approximation of single-degree-of-freedom (SDOF) system. Time history is synthesized using WAVSYN method and good consistency was obtained between the computed and required shock spectra. A given shock response spectrum with a Q value of 10 is converted to shock spectra with Q values of 1, 2.5, 5, 20 separately.

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