弹载隔旋机构设计及弹塑性耦合力学分析  

Design of Missile-Borne RotaryIsolation Mechanism and Elastoplastic Coupling Mechanical Analysis

作　　者：孙晓婷 于贵波 王毅 马乔 车金立 汪伟 SUN Xiaoting;YU Guibo;WANG Yi;MA Qiao;CHE Jinli;WANG Wei(Shijiazhuang Campus,Army Engineering University of PLA,Shijiazhuang 050003,China)

机构地区：[1]陆军工程大学石家庄校区,河北石家庄050003

出　　处：《陆军工程大学学报》2025年第2期35-42,共8页Journal of Army Engineering University of PLA

摘　　要：旋转隔离机构(简称隔旋机构)的抗过载性能是保障弹道修正引信正常工作的重要因素之一。针对高速旋转炮弹弹道修正引信的工作环境,设计了一种具有“内缓冲、外隔离”功能的隔旋机构,通过有限元仿真模拟、理论分析和试验验证相结合的方法对机构进行了弹塑性耦合变形分析。仿真模拟结果表明,内部的多球型点接触缓冲部件在冲击瞬间产生1.44 mm变形,冲击后接触半径约为2 mm;理论分析发现,刚度为150 N/mm的螺旋弹簧可满足外隔离设计的要求;液压冲击试验中,缓冲部件变形与仿真模拟结果基本一致,验证了结构设计的合理性。该隔旋机构的设计对弹道修正引信的工程应用及高精度制导弹药的发展有一定的促进作用。The overload resistance performance of the rotary isolation mechanism is one of the critical factors ensuring the normal operation of trajectory correction fuses.Aiming at the operating environment of trajectory correction fuses for high-speed rotating projectiles,a rotation-isolating mechanism with the functions of"internal cushioning and external isolation"is designed.The elastoplastic coupling deformation of the mechanism is analyzed through a combination of finite element simulation,theoretical analysis,and experimental verification.The simulation results indicate that the internal multi-spherical point-contact cushioning component undergoes a deformation of 1.44 mm at the moment of impact,with a contact radius of approximately 2 mm after impact;the theoretical analysis reveals that a helical spring with a stiffness of 150 N/mm can meet the requirements for outer isolation design;the deformation of the cushioning component in the hydraulic impact test is basically consistent with the simulation results,which verifies the rationality of the structural design.The design of the rotary isolation mechanism will have a significant impact on the engineering application of trajectory correction fuze and the advancement of high-precision guided munitions.

关 键 词：隔旋机构 引信 高冲击 有限元仿真 冲击试验 弹塑性耦合 

分 类 号：TH122[机械工程—机械设计及理论]