Metric of Shock Severity

TL;DR

This paper introduces a new shock severity metric called shock response matrix and severity infimum, providing a less conservative and more comprehensive way to evaluate shock environments compared to traditional methods.

Contribution

The paper proposes shock response matrix and severity infimum, along with dual spectra, to better assess shock severity, addressing limitations of existing SRS methods.

Findings

SSI can be extracted using singular value decomposition.

Dual spectra effectively determine shock severity range.

Validation through finite element simulations confirms the approach.

Abstract

Shock response spectrum (SRS) is a widely accepted method for shock testing specification. However, SRS, as a supremum, is over-conservative and cannot fully describe the relative severity for various shock environments. This study introduces shock response matrix, from which shock severity infimum (SSI) can be extracted using singular value decomposition method. Based on SRS and SSI, dual spectra are introduced to determine the range of shock severity between its supremum and infimum. The evaluation of the relative severity of various shock signals is discussed and validated by finite element simulations.