兵工自动化2026，Vol.45Issue(1)：5-10,6.DOI:10.7690/bgzdh.2026.01.002
HTPB推进剂单向拉伸过程的分子动力学模拟
Molecular Dynamics Simulation of Uniaxial Tensile Process of HTPB Propellant
摘要
Abstract
In order to investigate the micro-damage of hydroxyl-terminated polybutadiene(HTPB)propellant under tensile loading,interface models of ammonium perchlorate(AP)/HTPB and AP/HTPB/AP were established.Based on classical molecular dynamics,the deformation and failure behavior of the interface models under uniaxial tension were calculated.The influence of temperature on the mechanical properties of the interface models was analyzed,and the stress-strain curves and energy change curves of the interface models were obtained.The calculation results showed that micro cavities would appear inside the HTPB layer under axial loading.As the strain increased,the micro cavities merged,and the final failure location of the interface model was near the interface.The nominal stress-strain curve of the interface model could be divided into four stages:approximately linear elastic,yield,stress strengthening,and interface failure.As the temperature increased,the failure stress of the interface model decreased,and the elongation rate showed no significant change.关键词
HTPB推进剂/分子动力学/单向拉伸/界面失效/应力应变Key words
HTPB propellant/molecular dynamics/uniaxial tension/interfacial failure/stress-strain分类
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李金飞,曲凯,孟超,庄振民..HTPB推进剂单向拉伸过程的分子动力学模拟[J].兵工自动化,2026,45(1):5-10,6.
