Shock Response Spectrum

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Shock Response Spectrum (SRS)

Mechanical shock pulses are often analyzed in terms of shock response spectra. The shock response spectrum assumes that the shock pulse is applied as a common base input to an array of independent single-degree-of-freedom systems. The shock response spectrum gives the peak response of each system with respect to the natural frequency. Damping is typically fixed at a constant value, such as 5%, which is equivalent to an amplification factor of Q=10.

The following tutorial gives further information: [1]

The SRS for an an arbitrary base input can be calculated via a digital recursive filtering relationship, which models the convolution integral.

The filtering relationship can be implemented in Python by importing the lfilter function from scipy.

from scipy.signal import lfilter

A script for doing this is given at: [2]

The script requires the utility module: [3]

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