水下滑翔器耐压壳体的设计与优化

Design and Optimization of Pressure Case for Underwater Glider

采用特征值屈曲分析方法对水下滑翔器耐压壳体的结构参数进行了分析,计算了结构参数在不同取值情况下壳体的临界失稳压力,在分析比较计算结果的基础上,确定了耐压壳结构参数的最优数值。计算结果表明,优化设计得到的壳体即能满足抗压稳定性和机械强度要求,又最大限度地减轻了壳体的重量,与最初的设计方案相比,壳体重量减轻了1.51 kg,同时也使壳体内部空间得到了加大,其中中间段内部空间直径扩大了8 mm。

The structure parameters of the pressure case for underwater glider is analyzed by employing eigenvalue flexuosity analysis, and the structure parameters of the critical destabilizing pressure of the shell under different conditions are calculated. On the basis of the calculation, determination is made on the optimal numerical value of the structure parameters of the pressure case. Results indicate that the case based on the optimized design can meet both the requirements in compressive stability and machancial strength, and minimize the weight of the shell. Comparing with the results of the initial design scheme, the weight of the pressure case is reduced by 1.51kg, meanwhile the inside space of the pressure case increased, with an expansion of of 8mm in diameter of the interior space in the middle section.