V-band clamp separation device is commonly applied to the space engineering for releasing the connection of space payload from the launch vehicle. The release mechanism due to the pyroshock and modeling of the device is significant to predict the shock response spectrum (SRS), which is the transient dynamic load of the high frequency to the spacecraft. This paper proposes a simplified model to predict the pyroshock environment near the V-band clamp separation device. This model is based on a single degree of freedom system and calculates a free vibration after releasing, which is derived from the release mechanism of the device. Using the simple model, a simplified calculation method for the SRS interface specification is also proposed. Comparing simulation results with test ones, it is presented that this model will approximately predict the pyroshock response near the device. In addition, validation of the simplified SRS interface specification is also shown.
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