船载光电转台设计及特定环境下可行性分析

Shipborne photoelectric rotary table design and feasibility analysis under specific environment

结合船载光电转台的技术要求,通过pro/E软件设计舰载光电转台的机械结构。根据转台的表面材料,运用ABAQUS软件对其在海洋的等价静力风载、极端温度场和海浪振动3种特殊环境下进行表面变形分析,校验结构的应力和应变,确保满足船载光电转台的设计精度要求;得到在等价静力风载作用下,光电转台的最大应力点大小为255 MPa,小于钢的屈服强度355 MPa;在温差作用下最大应力点分别为174.8 MPa、247.1 MPa,均小于铝合金的屈服强度274 MPa;在海浪振动作用下,1~5阶振型的最大形变位置均不在转轴附近。

Combined with the technical requirements of shipboard photoelectric turntable,its mechanical structure was designed by pro/E software.According to the surface material of the turntable,the surface deformation vibration under special environment such as the equivalent marine static wind load,extreme temperature and vibration waves was analyzed by ABAQUS,in order to test the stress and strain of structure and ensure that the need of design accuracy for shipboard photoelectric turntable can be satisfied.Results show that the maximum stress point under the equivalent marine static wind load is 255 MPa which is less than the yield strength of steel(355MPa);the maximum stress point under temperature difference is 174.8 MPa and 247.1 MPa,respectively,which are both less than the yield strength of aluminum alloy(274 MPa);the position of the maximum deformation of 1~5vibration mode under vibrating waves are not near the vicinity of the shaft.