电枢装配后接触压力不均匀特性研究  

Study on Non-uniform Contact Pressure of Armature after Assembly

作　　者：舒涛[1] 刘明[1] 陈青荣 丁日显[1] 赵杰[1] SHU Tao;LIU Ming;CHEN Qingrong;DING Rixian;ZHAO Jie(Air and Missile Defense College,Air Force Engineering University,Xi’an 710051,China)

机构地区：[1]空军工程大学防空反导学院,西安710051

出　　处：《弹箭与制导学报》2019年第6期9-12,16,共5页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：国家自然科学基金青年科学基金(51605488)资助。

摘　　要：电枢作为六极轨道电磁发射器的核心部件,发射过程中电枢烧蚀、转捩现象严重影响发射性能,这些现象的发生与电枢的结构尺寸有直接关系。利用有限元仿真软件ANSYS Workbench模拟电枢与轨道的装配过程,得到装配过程中接触面等效压力变化情况,提出两个不均匀系数表征接触面横向和纵向压力分布不均匀特性。得到两个不均匀系数随电枢结构参数的变化规律:两个不均匀系数随着电枢头部厚度增加而增大,随着尾翼长度增大而减小;随着尾翼厚度增大,横向不均匀系数增大,纵向不均匀系数减小;随着圆角半径增大,横向不均匀系数增大,纵向不均匀系数几乎不变。Armature is the core component of the six pole track electromagnetic launcher.Ablation and transition phenomenon of the armature seriously affect the emission performance during the launching process.These phenomena have an direct relationship with the structure size of the armature.Using the finite element simulation software ANSYS Workbench to simulate the assembly process of the armature and the track,and the change of equivalent pressure of the contact surface during the assembly process is obtained.Two non-uniform coefficients are proposed to characterize the non-uniform pressure distribution of the transverse and portrait.The variation law of two non-uniform coefficients with armature structure parameters is obtained.The two non-uniform coefficients increase with the increase of armature head thickness and decrease with the increase of tail length.With the increase of the tail thickness,the transverse non-uniform coefficient increases and the longitudinal non-uniform coefficient decreases.With the radius of the circle increasing,the transverse non-uniform coefficient increases,the longitudinal non-uniform coefficient is almost unchanged.

关 键 词：电磁发射 电枢装配 有限元分析 不均匀系数 

分 类 号：TJ866[兵器科学与技术—武器系统与运用工程] TP391.9[自动化与计算机技术—计算机应用技术]