含能材料2026，Vol.34Issue(4)：369-378,10.DOI:10.11943/CJEM2026038
基于界面温升主导的活性材料弱冲击点火特性数值模拟研究
Numerical Simulation on Weak Impact Ignition Characteristics of Reactive Materials Dominated by Interfacial Temperature Rise
摘要
Abstract
Existing numerical simulation methods cannot describe the weak-impact ignition behavior of reactive materials.Al/PTFE reactive material was selected as the research object.A model for the interface temperature rise between aluminum parti-cles and polytetrafluoroethylene under impact loading was obtained by combining theoretical analysis and numerical simulation.This interface temperature rise model was embedded into the material point method(MPM)program framework.A numerical simulation method for the weak impact ignition characteristics of reactive materials was thus established,which is dominated by interface temperature rise.To validate the effectiveness of this method,impact ignition experiments on the reactive material were conducted using a split Hopkinson pressure bar(SHPB)apparatus.Compared with the MPM-SICR numerical simulation method that assumes a uniform temperature of the matrix and metal particles as the dominant factor for the reaction,the interface temper-ature rise of the reactive material under a shock wave pressure of 4 GPa is 750℃,which is significantly higher than the uniform temperature rise of 432℃.Under weak-impact conditions,the uniform temperature rise is insufficient to reach the ignition con-dition of the reactive material.In contrast,the interface-temperature-rise-based method can effectively simulate the deformation,fragmentation,and ignition phenomena of the reactive material.The relative error of the ignition delay time between the simula-tion and the experiment is 9.09%.This result demonstrates that the proposed method has high simulation accuracy for weak-impact ignition of reactive materials.关键词
活性材料/弱冲击点火/点火机理/界面温升/数值模拟Key words
reactive materials/weak impact ignition/ignition mechanism/interfacial temperature rise/numerical simulation分类
军事科技引用本文复制引用
古瑞祥,肖建光,苏成海,张谨麟,张志峰,苏精明..基于界面温升主导的活性材料弱冲击点火特性数值模拟研究[J].含能材料,2026,34(4):369-378,10.基金项目
国家自然科学基金(12502427,11702256) （12502427,11702256）
山西省自然科学基金(20210302124214)National Natural Science Foundation of China(Nos.12502427 （20210302124214）
11702256) （）
Shanxi Natural Science Foundation(No.20210302124214) （No.20210302124214）
