Sensitivity of SDOF steel-plate response to equivalent pressure-time histories for vented deflagration loads
Year: 2026
Type: article
Abstract: This paper investigates how the assumed pressure-time shape for vented dust deflagrations affects the predicted dynamic response of thin steel plates using a bilinear SDOF model with Cowper-Symonds strain-rate effects. Five peak/impulse-matched, peak-aligned equivalent load laws triangular, right-triangle, reversed Friedlander, double reversed Friedlander, and a hybrid ramp and tail are compared against a CFD-validated reference trace. Results quantify sensitivity of mid-span deflection and peak demand to rise/decay assumptions, identifying when impulse matching is sufficient and when rise time and post-peak tail must be modeled explicitly.
Source: Vibroengineering PROCEDIA
Authors: Francesco Pinna, Marco Zucca, Marco Simoncelli
Institutions: University of Cagliari, Politecnico di Milano
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7155210783