中文摘要：

同轴双输出行星齿轮减速器因具有独特的结构型式而成为研究重点之一，由于其需满足外廓尺寸和质量等使用要求仍存在较大的设计困难。应用ANSYS软件的APDL语言，编写集参数化造型、网格划分、边界条件处理、优化分析于一体的命令流程序。在满足强度、刚度的前提下，采用零阶优化方法对行星架和壳体零件进行优化设计，减小行星架和壳体的体积。

英文摘要：

The researchers lay an emphasis on the coaxial planetary gear reducer with dual power output because of its unique structural style, but it is still difficult to design such reducer at present due to the restriction in overall dimension and weight. Using ANSYS parametric design language （ APDL} , the command stream based program is developed to establish parameter model, generate the finite element mesh, determine the boundary condition and complete the optimization analysis. In order to reduce the volume of planet carrier and shell parts, the zero - order method is used to implement the optimal design under conditions of enough strength and stiffness.