自排风式转杯纺转杯关键性能参数优化

Optimization of key parameters for self-exhaust rotor on air spinner

为改进转杯纺转杯的机械力学性能,针对自排风式转杯结构,开发了基于ANSYS Parametric Design Language(APDL)的参数化有限元建模程序,在此基础上构建了优化数学模型。以滑移面角度α为设计变量,通过随机搜索算法实现了转杯关键性能参数的动态优化,指出:当α采样计算值为17.22°时,转杯静动态力学性能达到最优,不仅将基频f 1提高了6%,而且在有效范围内减小了最大应力S和最大位移d。动态分析结果表明:排风孔数量对转杯抗振性能影响明显,且采用6孔或7孔结构时,更有利于综合发挥转杯工作效能。为转杯纺纱工艺改进和转杯设计选型提供了重要技术支持。

In order to improve mechanical properties of rotor on air spinner,a parametric finite element modeling program based on ANSYS Parametric Design Language(APDL)was developed for selfexhaust rotor.On this basis,the optimum mathematical model was constructed.The slip plane angleαwas taken as design variable,and some key parameters of the rotor was optimized with dynamic method by using random search algorithm,and then a viewpoint was proposed that when the calculated value ofαsampling is 17.22°,the static and dynamic mechanical performance of the rotor reaches the optimum,because not only fundamental frequency f1 is increased by 6%,but also maximum stress s and maximum displacement d are also reduced within the effective range.Besides,a result of dynamic analysis show that the number of exhaust hole has a significant impact on vibration resistance of the rotor,and comprehensive performance of the rotor will be easier inspired when 6-hole or 7-hole structure is used.All of that provides important technical support for improvement of air spinning process and selection of rotor design.