基于 THUMS 模型的人员胸部爆炸冲击波致伤机理

In order to obtain the mechanism of chest injury under explosion shock waves, a high fidelity digital dummy model (total human model for safety, THUMS) was used to construct a numerical model of the human-explosion flow field using the Load_Blast_Enhanced method and the arbitrary Lagrange-Euler (ALE) method. The damage to the human chest under explosion shock waves was numerically calculated, and the effectiveness of the proposed model is verified by an explosion accident. Based on the peak overpressure criterion of shock waves and the Axelsson damage model, it was found that personnel injury levels were only at risk of minor injuries when TNT equivalent was 1 500 g and explosion distance was 4 m. Based on the dynamic response of skin, bones, heart and lungs, a detailed analysis of the types of injuries to various tissues and organs of personnel was conducted, revealing the injury patterns and mechanisms of explosion shock waves during minor injuries. The research results can provide reference for the assessment of injuries caused by explosions and the design of related protective equipment.