摘要
针对振动磨在运转过程中振动参数对结构强度的影响,建立双电机驱动自同步振动磨筒体的模态分析和谐响应分析数学模型,借助于有限元ANSYS软件对筒体进行仿真试验,确定筒体的前8阶固有频率和相应的振型;采用不同的阻尼比和简谐激振力,探索其对共振幅值的影响及共振区域的频率范围。研究结果表明：振动磨的共振区域在第1,2阶固有频率附近,频率范围约为40~50 Hz;随着阻尼比加大,振幅减小,简谐激振力增加,筒体的共振幅值增大,而相角的变化与激振力大小无关。该模型的建立为振动磨的设计者提供理论依据,进而提高设备的安全可靠性。
In order to study the influence of vibration parameters on the structural strength,the mathematical models were established about the mode and harmonic response analysis of the self-synchronous vibration mill with the dual motors,and by means of the finite element ANSYS software,the natural frequencies and the corresponding vibration modes were determined by the simulation testing. It was discovered that the different damping ratios and harmonic exciting forces had an effect on the amplitude and frequency of the resonance region. The research results indicate that the resonance region of the vibration mill is in the region of the first and the second orders of the natural frequency,and the frequency range is about 40 ~ 50 Hz,and the amplitude decreased as the damping ratios increased,but the amplitude increased as the harmonic exciting forces increased,and that the phase angles unrelated to the exciting forces. The theoretical basis may be provided for the designer of vibration mill,and then improve the safety and reliability of the equipment.
出处
《轻工机械》
CAS
2016年第2期1-4,14,共5页
Light Industry Machinery
基金
国家自然科学基金资助项目(51402192)
上海理工大学创新基金项目(10-14-301-201)
关键词
自同步振动磨
数学模型
模态分析
谐响应分析
self-synchronous vibration mill
mathematical model
mode analysis
harmonic response analysis
