矩形薄板振动式液压脉动衰减器模态分析

发布时间：2017-12-28 08:48

本文关键词：矩形薄板振动式液压脉动衰减器模态分析　出处：《液压与气动》2016年06期 　论文类型：期刊论文

【摘要】：针对液压系统压力脉动提出一种矩形薄板振动式压力脉动衰减器结构,利用矩形薄板的各阶模态来达到宽频带压力脉动衰减效果。当液压油的脉动频率接近共振矩形板的某一阶固有频率时,就会激发相应模态振型将该频率成分的脉动能量以最大限度的衰减掉。运用ANSYS Workbench对共振板进行湿模态分析,得到前12阶固有频率与振型。分析结果表明:矩形薄板振动式压力脉动衰减器结构紧凑,各模态频率分布均匀且密集,具有扩宽液压压力脉动频率带效果,适应不同工况工作。
[Abstract]:Aiming at the pressure pulsation of hydraulic system, a rectangular thin plate vibrating pressure pulsation attenuator structure is proposed, and the attenuation effect of wide band pressure pulsation is achieved by using various modes of rectangular thin plate. When the pulsation frequency of hydraulic oil is close to the natural frequency of a rectangular plate, the corresponding modal mode will be excited, and the pulsating energy of the frequency component will be attenuated to the maximum. The ANSYS Workbench is used to analyze the wet mode of the resonance plate, and the first 12 order natural frequencies and vibration modes are obtained. The analysis results show that the rectangular thin plate vibratory pressure pulsation attenuator has compact structure, uniform and dense frequency distribution of various modes, and has the effect of broadening the frequency band of hydraulic pressure pulsation, which is suitable for different working conditions.
【作者单位】：西南科技大学制造科学与工程学院;
【分类号】：TH137
【正文快照】： 引言在液压系统中,液压泵承担着系统的动力源。液压泵的内部结构特性也就决定了其输出流量不是恒定而是随着时间在一定范围内波动的。同时,泵的输出流量遇到系统管道及负载阻抗后形成系统压力,从而使输出流量和压力产生周期性变化[1],也就是液压系统的压力脉动。在液压系统工

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