Metric of shock severity. (29th July 2020)

• Record Type: Journal Article
• Authors: Yan, Yinzhong; Li, Q. M.
• Is Part Of: Proceedings. Volume 476:Number 2239(2020)
• Publication Date: 2020-07-29
• Subjects: shock -- shock response spectrum -- shock response contour -- singular value decomposition -- shock severity infimum; Physical sciences -- Periodicals; Engineering -- Periodicals; Mathematics -- Periodicals; 500
• DOI: 10.1098/rspa.2019.0694
• Languages: English
• ISSNs: 1364-5021

Abstract

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.