| 郭培培，徐 波，曹伟.双电机驱动自同步振动磨动力响应研究[J].轻工机械,2016,34(4): |
| 双电机驱动自同步振动磨动力响应研究 |
| Research on Dynamic Response of Self-Synchronous Vibration Mill with Dual Motors |
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| DOI：10.3969/j.issn.1005 -2895.2016.04.008 |
| 中文关键词: 振动磨 力学模型 动力分析 Rayleigh阻尼 有限元分析 |
| 英文关键词:self-synchronous vibration mill mechanical model dynamic analysis Rayleigh damping Finite Element
Analysis( FEA) |
| 基金项目: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（10-15 -301-201）。 |
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| 中文摘要: |
| 以双电机驱动自同步振动磨为研究对象，对其进行简化处理，建立力学模型。通过对其施加X，y方向的简谐激
振力，建立无阻尼系统强迫振动和有阻尼系统强迫振动的数学模型，在此基础上，确定Rayleigh阻尼的常数α和β，利用
有限元ANSYS软件进行瞬态动力学分析，研究其在动载荷作用下的变形情况。研究结果表明：在工况频率16 Hz下，节
点运动轨迹更接近圆形，距理想粉碎效果的圆形轨迹较近，粉碎效果较好，进入稳定期的时间较快；在共振频率42 Hz
下，节点轨迹振幅更大，进入稳定期较慢，阻尼对振动的衰减作用较强；不同阻尼比对振动的衰减作用成正比关系。因
此，可以通过控制阻尼比等参数获得更有利的研磨效果，提高研磨效率。 |
| 英文摘要: |
| The self-synchronous vibration mill of dual motors was simplified to establish mechanics model. To study the
deformation under the action of dynamic load in the X , Y direction where the harmonic exciting forces were applied on,
undamped system forced vibration and damping system forced vibration mathematical model were established. On this
basis, with the determination of Rayleigh damping constant a and p, the finite element ANSYS software could simulate
transient dynamics analysis. The research results indicated that node's trajectory was close to the circular, faster be in
stable phase and get better grinding effect under working condition of 16 Hz frequency; the amplitude of node's trajectory
could be larger, and was slower to get into stable phase and vibration attenuation effect of damping was much stronger
under resonant frequency of 42 Hz. Different damping ratio had proportional effect on the vibration attenuation.
Therefore, the effect and efficiency of grinding can be improved by controlling the parameters of damping ratio. |
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