水下航行器动力装置动力学特性研究  

Dynamic Characteristics of Undersea Vehicle Power Plant

作　　者：曹浩 文立华[1] 王志杰[2] 赵昌利[2] CAO Hao;WEN Li-hua;WANG Zhi-jie;ZHAO Changi-li(College of Astronautics,Northwestern Polytechnical University,Xi’an 710072,China;The 705 Research Institute,China Shipbuilding Industry Corporation,Xi’an 710077,China)

机构地区：[1]西北工业大学航天学院,陕西西安710072 [2]中国船舶重工集团公司第705研究所,陕西西安710077

出　　处：《水下无人系统学报》2019年第6期673-679,共7页Journal of Unmanned Undersea Systems

摘　　要：动力装置是水下航行器辐射噪声的主要来源,为了有针对性地隔离振动、控制辐射噪声,有必要研究关键零件的运动特性和力学特性。文章采用自下而上的方法,建立了包含发动机、燃料泵等在内的详细动力装置模型,完成了虚拟样机建模。基于虚拟样机研究了活塞、配气阀体、减振垫、海水管等关键零件的运动特性及受力情况。经分析,活塞的加速度突变、配气阀体和阀座脱离是轴向振动的主要成因;受装配位置的影响,6个减振垫径向载荷数值相当、规律相同,而轴向的受力差异较大;海水管轴向受力呈现单频周期特性。在工程设计中,应区别设计减振垫刚度并用柔性海水管代替刚性海水管,这些措施为降低辐射噪声提供了结构改进方向。To control radiation noise of undersea vehicles,a detailed power plant model of undersea vehicle,including such as engine and fuel pump,is established,and the virtual prototype modeling is completed.Based on the virtual prototype,the motion characteristics and forces on the major parts,such as piston,body of pneumatic valve,damping pad and seawater pipe,are analyzed.It is found that:1)the abrupt change of the piston’s acceleration and the disengagement of the valve body from valve seat are the main causes of axial vibration;2)due to the influence of the assembly position,the six damping pads have equivalent radial load values and the same stressing regularity,but their axial forces are quite different;3)the axial force of the seawater pipe exhibits a single-frequency period characteristic.It is suggested that in engineering design,the stiffness of the damping pads should be distinguished,and flexible seawater pipe should be substituted for rigid one,which may facilitate reduction of the radiated noise.

关 键 词：水下航行器 动力装置 动力学特性 虚拟样机 

分 类 号：TJ630.32[兵器科学与技术—武器系统与运用工程] TB71.2[一般工业技术—真空技术]