负载因素对液体静压导轨系统性能的影响
发布时间：2019-03-11 14:29
【摘要】：从液体静压导轨系统全局的角度出发,研究负载因素对其性能的影响。利用液阻网络理论,综合考虑油液黏温效应,推导关联参数与负载因素之间的数学关系,建立基于关联参数的CFD求解计算模型;在不同负载因素条件下,根据摄动理论,使用Fluent动网格技术求解导轨系统的性能参数,进而研究其在脉冲载荷下的振动性能。研究结果表明:负载因素与初始压力比对导轨系统的性能参数产生影响,当负载比越大时,系统流量、固有频率和最大振幅就越小,同时阻尼与阻尼比就越大;系统刚度则主要随初始压力比增大先增大后降低,出现峰值;作为导轨系统重要设计参数,可以通过调整初始压力比来适应负载因素的变化,以达到更好的系统性能。
[Abstract]:The influence of load factors on the performance of hydrostatic guideway system is studied from the overall point of view. By using the theory of liquid resistance network and considering the viscosity-temperature effect of oil comprehensively, the mathematical relationship between the correlation parameters and the load factors is deduced, and the CFD calculation model based on the correlation parameters is established. Under different load conditions, according to the perturbation theory, fluent dynamic grid technique is used to solve the performance parameters of the guideway system, and then the vibration performance of the guideway system under pulse load is studied. The results show that the load factor and the initial pressure ratio have an effect on the performance parameters of the guideway system. When the load ratio is larger, the flow rate, the natural frequency and the maximum amplitude of the system will be smaller, and the damping to damping ratio will be larger. As an important design parameter of guideway system, the initial pressure ratio can be adjusted to adapt to the change of load factors in order to achieve better system performance.
【作者单位】： 中南大学机电工程学院;
【基金】：国家自然科学基金资助项目(51175518)~~
【分类号】：TH136
本文编号：2438361
[Abstract]:The influence of load factors on the performance of hydrostatic guideway system is studied from the overall point of view. By using the theory of liquid resistance network and considering the viscosity-temperature effect of oil comprehensively, the mathematical relationship between the correlation parameters and the load factors is deduced, and the CFD calculation model based on the correlation parameters is established. Under different load conditions, according to the perturbation theory, fluent dynamic grid technique is used to solve the performance parameters of the guideway system, and then the vibration performance of the guideway system under pulse load is studied. The results show that the load factor and the initial pressure ratio have an effect on the performance parameters of the guideway system. When the load ratio is larger, the flow rate, the natural frequency and the maximum amplitude of the system will be smaller, and the damping to damping ratio will be larger. As an important design parameter of guideway system, the initial pressure ratio can be adjusted to adapt to the change of load factors in order to achieve better system performance.
【作者单位】： 中南大学机电工程学院;
【基金】：国家自然科学基金资助项目(51175518)~~
【分类号】：TH136
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