Sensitivity of SDOF steel-plate response to equivalent pressure-time histories for vented deflagration loads
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.
Fields of Study & Subjects
Structural Response to Dynamic Loads
Wind and Air Flow Studies
Computational Fluid Dynamics and Aerodynamics
Publication details
- Journal / source
- Vibroengineering PROCEDIA
- Publisher
- JVE International Ltd.
- Volume
- 61
- Pages
- 26–32
- Publication date
- 22 April 2026
- Language
- EN