基于模糊层次分析法的颤振稳定极限区域工程优化选择

Engineering Optimization Selection of Flutter Stability Limit Region Based on FAHP

依据铣削颤振稳定极限理论,以钛合金薄壁件为研究对象,详细阐述了二维颤振稳定极限区域的工程现场获取方法;针对工件批量加工过程中出现的重复装夹、模态耦合等模糊因素造成的稳定极限失真,在综合考虑工件加工质量、效率、环境影响等因素的基础上,基于模糊层次分析法提出并设计了二维颤振稳定极限区域内工艺参数优化选择的指导算法,并将优选的工艺参数进行了工程验证。

According to the milling chatter stability limit theory,the titanium alloy thin-walled part was taken as the research ob⁃ject,the engineering field acquisition method for two-dimensional chatter stability limit region was described in detail.For the chatter stability limit distortion,caused by repeated clamping,modal coupling appeared in the process of material removal and batch process⁃ing,on the basis of comprehensive consideration of workpiece processing quality,efficiency,environmental impact and other factors,a guidance algorithm for the optimal selection of process parameters in the two-dimensional flutter stability limit region was proposed and designed,based on the fuzzy analytic hierarchy process(FAHP).The optimized process parameters were verified in engineering.