含能材料2025，Vol.33Issue(4)：384-391,8.DOI:10.11943/CJEM2025014
PBX炸药热分解参数的预测模型构建与应用
Development and Application of a Prediction Model for Thermal Decomposition Parameters of PBX Explosives
摘要
Abstract
To overcome the limitations of conventional cook-off models in full-chain prediction of explosive formulations and charge behaviors while eliminating post-ignition temperature field singularities,a multi-component parameter fitting model was systematically applied to investigate the thermal decomposition response and cook-off characteristics of polymer-bonded explo-sives(PBX-9501,PBX-9502,and novel PBX-4).A component parameter-driven full-process simulation framework was estab-lished through coupled multi-physics modeling integrating Arrhenius reaction kinetics with the JWL product gas equation of state,enabling numerical characterization from initial thermal decomposition to final casing rupture.Validation results demon-strated that ignition time prediction errors for PBX-9501 and PBX-9502 were 3.4%and 5.7%respectively compared with experi-mental data.Ignition time deviation for PBX-4 prediction reached 2.3%against validation experiments.Dynamic regulation of product gas parameters stabilized explosion temperatures within 3328-3502 K,effectively resolving temperature singularity is-sues inherent in traditional solid-phase cook-off models.关键词
聚合物粘结炸药(PBX)/烤燃实验/数值模拟/点火/产物膨胀Key words
polymer-bonded explosives(PBX)/cook-off tests/numerical simulations/ignition/product expansion分类
武器工业引用本文复制引用
曹落霞,王浩,周天宇,黄谦,吕子剑,周阳..PBX炸药热分解参数的预测模型构建与应用[J].含能材料,2025,33(4):384-391,8.基金项目
国家自然科学基金(12202415,12472371) （12202415,12472371）
