蜂窝复合材料构件超声切割圆盘刀对声学系统的影响

Influence of ultrasonic cutting disk cutter on acoustic system for honeycomb composite components

为探讨超声切割圆盘刀几何参数变化对声学系统稳定性的影响,对圆盘刀几何参数对声学系统谐振频率和振幅的影响规律进行研究。通过石墨粉振动试验确定圆盘刀超声切割声学系统振型;通过仿真和实验研究圆盘刀厚度、楔角以及直径对声学系统谐振频率和振幅的影响,并结合田口方法分析圆盘刀几何参数对谐振频率和振幅影响的主次要关系;通过回归分析方法研究圆盘刀几何参数与谐振频率的线性关系,为圆盘刀的设计提供理论指导。结果表明:随着圆盘刀厚度的增加,超声切割声学系统的谐振频率和振幅增大;圆盘刀楔角增大,谐振频率和振幅呈下降趋势;圆盘刀直径增大,谐振频率呈下降趋势,而振幅无确定变化规律;圆盘刀直径对谐振频率和振幅影响最为显著。

In order to investigate the influence of geometric parameters change of ultrasonic cutting disc cutter on stability of acoustic system,influence rule of geometric parameters of the disc cutter on resonance frequency and amplitude of acoustic system is studied. Vibration mode of ultrasonic cutting acoustic system of disk cutter is determined by vibration test of graphite powder. Influence of thickness,wedge angle and diameter of the disk cutter on the resonant frequency and amplitude of the acoustic system is studied by simulation and experiment. The primary and secondary relations of influence geometric parameters of the disc cutter on resonant frequency and amplitude are analyzed by Taguchi method. Through regression analysis method,study on linear relationship between disc cutter geometry parameters and resonant frequency,which provides theoretical guidance for the design of the disc cutter. The results show that with the increase of the thickness of the disc cutter,the resonant frequency of the ultrasonic cutting system increases and the amplitude also shows a trend of increase. While wedge angle of the disc increases,resonant frequency decreases and the amplitude also shows a trend of decreases. While diameter of cutter increases,the resonant frequency decreases,but the amplitude has no certain change law. The diameter of the disk cutter has the most significant effect on resonant frequency and amplitude.