CAJ | 학술논문

为研究耳轴－轴承间接触碰撞及间隙对自行高炮行进间射击时炮口响应影响，采用基于 Lankarani －Ni-kravesh 接触碰撞理论改进的含间隙旋转铰接触碰撞力数值方法，描述不同间隙的自行高炮耳轴－轴承约束关系。利用谐波叠加法重构符合路面分级标准的不平度，考虑身管柔性建立含耳轴－轴承间隙的刚柔耦合自行高炮发射动力学模型。数值计算获得不同间隙下自行高炮行进间射击炮口动态响应，并与耳轴－轴承理想旋转铰模型对比分析。结果表明，耳轴－轴承间接触碰撞对炮口高低、方向射角影响程度不同，对方向角速度影响最明显；耳轴－轴承间隙与炮口响应并非对应的线性变化关系。
위연구이축－축승간접촉팽당급간극대자행고포행진간사격시포구향응영향，채용기우 Lankarani －Ni-kravesh 접촉팽당이론개진적함간극선전교접촉팽당력수치방법，묘술불동간극적자행고포이축－축승약속관계。이용해파첩가법중구부합로면분급표준적불평도，고필신관유성건립함이축－축승간극적강유우합자행고포발사동역학모형。수치계산획득불동간극하자행고포행진간사격포구동태향응，병여이축－축승이상선전교모형대비분석。결과표명，이축－축승간접촉팽당대포구고저、방향사각영향정도불동，대방향각속도영향최명현；이축－축승간극여포구향응병비대응적선성변화관계。
In order to study the impact of clearance between trunnion and bearing on the muzzle response of antiaircraft gun on the move,a computational collision methodology was improved based on Lankarani-Nikravesh law and was used to describe the constraint relation between trunnion and bearing with different clearances.The flexibility of barrel was considered and the stochastic road irregularities were created by sinusoid superposition method to establish a rigid-flexible coupling dynamic model of self-propelled antiaircraft gun.According to the numerical calculation,the dynamic muzzle responses of the gun when firing on the move were obtained and compared with those by using the ideal constraint model.The results indicate that the collision between trunnion and bearing has a certain impact on elevation angle and direction angle and the effect on direction angular velocity is most obvious.The results provides a basis for grasping the impact rules of backlash nonlinearity on muzzle responses of self-propelled antiaircraft gun on the move.