潜用光电设备在波流场中的力学响应分析

Mechanical Response Analysis of Underwater Vehicle Optoelectronic Equipment in Wave and Flow Field

潜用光电设备是水下航行器重要的观察测量仪器,潜望状态使用时受到波流场的流体动力作用。在波流场的作用下,潜用光电设备将发生周期性弯曲和振动。严重时,会影响设备的使用,甚至会导致设备的损坏。对潜用光电设备在波流场中所受流体力进行了分析,得到了其时域谱。再通过瞬态动力学有限元分析法,对波流场作用下潜用光电设备的最大变形和应力响应进行了解算,得到了最大变形和应力时域谱。仿真结果表明,对于高频率的涡漩侧向力,在瞬态加载条件下其力学响应比极大值静态加载要大得多。波流场作用下的力学响应分析对设备结构强度、使用评估等具有指导意义。

Underwater vehicle optoelectronic device is an important observation and measurement equipment of underwater vehicle,which is affected by the hydrodynamic force of wave and flow field.Under the action of wave and flow field,the optoelectronic device will have periodic bending and vibration.In serious cases,the device may be affected or even damaged.The flow force of optoelectronic device in wave flow field is analyzed and its time domain spectrum is obtained.Then,the maximum deformation and stress response of the underwater vehicle optoelectronic device under the action of wave and flow field are calculated by means of transient dynamic finite element analysis,and the maximum deformation and stress time-domain spectra are obtained.The simulation results show that the dynamic response of vortex lateral force under transient loading is much larger than that under maximum static loading.The mechanical response analysis under the action of wave and flow field is of great significance to the structural strength and application evaluation of device.