期刊名称：Lecture Notes in Engineering and Computer Science
印刷版ISSN：2078-0958
电子版ISSN：2078-0966
出版年度：2018
卷号：2235&2236
页码：576-580
出版社：Newswood and International Association of Engineers
摘要：The impact caused by the explosion of the
pyrotechnic device used for stage separation of a launch vehicle
and for satellite separation is called pyroshock. Pyroshock
causes high-frequency, high-amplitude shock energy, which
causes damage to electronic equipment situated close to the
pyrotechnic device. Therefore, the electronic equipment
mounted on a satellite has to satisfy the requirements of the
Shock Response Spectrum(SRS) for pyroshock. As pyrotechnic
device is costly and hazardous, mechanical pyroshock
simulation devices can be used in pyroshock testing.
Metal-metal impact methods are utilized to simulate
mechanical pyroshock, and to adjust the knee frequency of the
shock response spectrum through resonant plates. However, it
is difficult to predict the impact force history of metal-metal
impacts and the dynamic behavior of resonant plates.
Therefore, devices that satisfy the shock response spectrum are
designed through experimental trial and error and much cost
and effort is required. Accordingly, to reduce the cost and effort
required in the initial design of a pyroshock simulation device,
the shock response spectrum should be easily predictable.
In this paper, pyroshock was simulated through a pendulum
impact device. In order to predict the shock response spectrum
without difficulty, impact force history according to the mass
and velocity of an impactor was represented by specific
variables. An interpolation method and an extrapolation
method based on experiment data were used to predict impact
force history according to impact mass and velocity. Having
determined the predicted impact force history, the dynamic
behavior of a resonant plate and the shock response spectrum
were calculated by performing finite element analysis (FEA).
The predicted shock response spectrum findings were
compared with experiment results.
