基于UG、Workbench平台航空发动机多盘转子结构自动优化方法

Automatic optimization method for multi-disk rotor structure of aero-engine based on UG and Workbench platform

目前对航空发动机转子优化设计多限于单盘优化,且优化需要借助人工调整再优化。基于航空发动机转子优化设计常用软件平台数据交流方便和减少人工调整的考虑,提出了基于UG、Workbench平台航空发动机多盘转子结构自动优化方法。首先基于UG平台,对多盘转子结构进行参数化几何造型,借助生成的标准化模板,便于减少建模工作量及对同类盘的优化。然后基于Workbench平台,借助脚本语言(APDL、Python)二次开发完成对多盘转子结构状态变量提取,及自动优化流程控制。算例结果表明,在满足几何、强度要求条件下,优化后多盘转子结构质量减少了33%,应力分布更为均匀,且验证该方法具有良好的稳定性及精度。

At present,the optimization design of an aero-engine rotor is limited to single disk optimization,and the optimization needs to be performed by manual adjustment.In view of the convenience of aero-engine rotor data exchange between the optimization and model building software platforms and the reduction of manual adjustment,an automatic optimization method of multi-disk rotor structure of aero-engine based on UG and Workbench platform was proposed.Firstly,based on the UG platform,parametric geometrical modeling of multi-disk rotor structure can be made,and a standardized template was generated,in order to optimize the similar disk optimization problem.Then based on the Workbench platform,with APDL and Python redevelopment code,extraction of multi-disk rotor structure＇s state variables and automatic optimization of process control were completed.The results of a numerical example showed that under the condition of satisfying geometrical and strength requirements,the mass of rotor was reduced by 33%,and the stress distribution was more uniform.And the method was proved to be of good stability and precision.