Method for calculating maximum dynamic displacement of box structure under non-uniform hydrogen deflagration overpressure

By setting load measuring points on the box-type structure, the overpressure load curve of non-uniform hydrogen deflagration was obtained, a simplified mathematical model was established, and the dynamic coefficient and maximum dynamic displacement were calculated. This fills the gap in the existing technology for calculating the maximum dynamic displacement of box-type structures under non-uniform hydrogen deflagration overpressure, and realizes accurate prediction of the dynamic response of structures with pressure relief plates or completely enclosed structures, thus guiding safety design.

CN122365614APending Publication Date: 2026-07-10Hefei Institute of Technology
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Hefei Institute of Technology
Filing Date
2026-04-15
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing technologies lack methods for calculating the maximum dynamic displacement of box-type structures under overpressure from non-uniform concentration hydrogen deflagration, making it impossible to quickly and accurately predict the maximum dynamic displacement of the structure. In particular, there is a lack of dynamic response prediction methods in structures with pressure relief plates or completely enclosed structures.

Method used

By setting load measurement points on the target calculation surface, the non-uniform hydrogen deflagration overpressure load curve is obtained, the load matrix is ​​assembled, the mechanical and dynamic parameters are determined, the geometric center point is defined, a simplified mathematical model is established, the dynamic coefficient and the maximum dynamic displacement are calculated, and the non-uniform distribution characteristics of the hydrogen deflagration overpressure load are considered.

Benefits of technology

It provides a fast and accurate method for calculating the maximum dynamic displacement of a box-type structure under non-uniform hydrogen deflagration overpressure, which can predict the maximum dynamic displacement of a structure with pressure relief plates or a completely enclosed structure, and guide the safety design and protection of hydrogen-related structures.

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Abstract

This invention discloses a method for calculating the maximum dynamic displacement of a box-type structure under non-uniform hydrogen deflagration overpressure, relating to the field of structural safety protection technology for hydrogen-related structures. The method involves obtaining the non-uniform hydrogen deflagration overpressure load curve on the target calculation surface of the box-type structure and assembling it into a load matrix. Mechanical and geometric parameters of the target calculation surface are extracted, and representative points of maximum dynamic displacement are set on the target calculation surface. Depending on whether the box-type structure has pressure relief plates, is completely enclosed, or has natural ventilation openings, a displacement response calculation model for plate components under non-uniform hydrogen deflagration overpressure load or a method for predicting the maximum deformation of plate components under confined space hydrogen deflagration overpressure load is selected to calculate the maximum dynamic displacement. This invention solves the problem of the lack of a method for calculating the maximum dynamic displacement of structures under non-uniform hydrogen deflagration overpressure load in the prior art, and has significant engineering implications for guiding the optimization of the explosion-proof performance and safety design of hydrogen-related structures.
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