Page 81 - 《爆炸与冲击》2026年第3期

第 46 卷 罗 贤，等： 一种新型胸部物理模型的设计及冲击响应分析 第 7 期

(4) 在高速冲击工况（100～120 m/s）下，三层结构呈现出明显的分层动态响应特征。软组织层承担
了绝大部分冲击能量的吸收和耗散，其等效应变和吸能随速度升高显著增加；肋骨层在高能工况下峰值
等效应力迅速升高，并可能超过材料屈服强度参考范围，提示存在较高骨折风险；皮肤层主要参与初始
接触缓冲，对整体吸能贡献有限。冲击速度每提高约 10 m/s，肋骨峰值等效应力与软组织吸能均呈显著
增长趋势，表明冲击速度是决定伤害严重程度的关键因素。

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