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转速高负荷重的涡轮盘是发动机重量大户,采用单辐板结构设计难以有效减轻重量。提出并建立了涡轮盘双辐板结构优化设计数学模型及方法,筛选了涡轮盘子午面形状设计参数,建立了应力约束条件,利用AN-SYS优化平台,编制了轮盘结构优化程序。针对典型高负荷涡轮盘结构优化问题,分别进行了单辐板盘和双辐板盘结构优化设计,结果表明,在满足轮盘变形、强度要求的条件下,双辐板盘比单辐板盘重量可减少25.3%,应力分布更均匀,说明对于高负荷涡轮盘,双辐板盘具有明显的优势。
High speed heavy load turbine disc is a heavy engine, the use of single-spoke structure design is difficult to effectively reduce the weight. The mathematic model and method of optimal design of double-spoke plate structure of turbine disk are proposed and established. The design parameters of midday shape of turbine disk are screened out and the stress constraints are established. By using AN-SYS optimization platform, the optimization program of disk structure is compiled. In order to optimize the structure of typical high-load turbine disk, the optimal design of single-spoke plate and double-spoke plate was carried out respectively. The results show that under the condition of meeting the requirement of wheel deformation and strength, Weight can be reduced by 25.3%, the stress distribution more uniform, indicating that for high-load turbine disk, double-spoke plate has obvious advantages.