A numerical characterization method of gas explosion damage based on biological living body damage correction

By constructing a numerical characterization method for gas explosion damage with biological live body damage correction, the systematic and multi-dimensional problems of gas explosion casualty assessment are solved. It realizes accurate prediction of biological damage in gas explosion and revelation of mechanical mechanisms, and is applicable to the simulation of different roadway structures and explosion conditions.

CN122366048APending Publication Date: 2026-07-10NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Filing Date
2026-05-14
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing technologies cannot accurately reproduce the nonlinear mechanical properties of biological tissues, nor can they obtain data on the internal mechanical response of organisms at the moment of gas explosion impact. Furthermore, traditional simulation methods lack in vivo experimental data correction, resulting in a lack of systematicness and multidimensionality in gas explosion casualty assessment.

Method used

A numerical characterization method for gas explosion damage based on biological live body damage correction is constructed. Multi-dimensional damage data are obtained through a fluid-structure interaction numerical model. An improved arbitrary Lagrange-Euler algorithm is used to solve the model. A multi-objective collaborative correction model is established, the damage probability threshold is calibrated, the fluid-structure interaction numerical model is corrected in reverse, and a high-confidence prediction model is output.

Benefits of technology

It enables multi-dimensional and systematic characterization and prediction of biological damage from gas explosions, reduces the cost of animal experiments, reveals the intrinsic mechanical mechanism of gas explosion shock wave injury, provides theoretical support for the clinical treatment and protection of explosion injuries, and is applicable to the simulation of different roadway structures and explosion conditions.

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Abstract

This invention discloses a numerical characterization method for gas explosion damage based on in vivo biological damage correction, belonging to the interdisciplinary field of explosion mechanics and biomedicine. The method first acquires multi-dimensional damage data of organisms in gas explosion experiments, constructs a fluid-structure interaction numerical model of the gas explosion flow field in the tunnel and a biomimetic finite element model of the organism, solves the model using an improved arbitrary Lagrange-Euler algorithm, and extracts dynamic biomechanical response parameters. A quantitative correlation between mechanical response and damage level is established through a multi-objective collaborative correction model and an ordered Probit correction model. After iterative optimization, a high-confidence gas explosion-induced biological damage prediction model is output. This invention forms a complete closed loop of simulation-experiment-correction, which can accurately characterize gas explosion biological damage, providing technical support for research on explosion injury mechanisms, assessment of protective effectiveness, and clinical diagnosis and treatment.
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