摘要
针对磁流变液减振器结构设计磁场利用率不高,同时磁流变液易产生沉降现象导致控制特性劣化,而磁流变脂粘度高、流动性差导致减振器初始阻尼力过大、阻尼调校空间小的问题,本文提出一种减振效果与活塞位移相关的新型磁流变脂减振器。本文阐述了该减振器的结构形式和工作原理,基于流体力学理论,选用宾汉本构模型,建立了输出阻尼力数学模型,在MATLAB环境下对模型进行仿真研究。为了提高减振器性能对其在基础尺寸上进行了合理的优化,优化结果显示优化后减振器相较之前得到了更低的初始阻尼力以及更宽的阻尼可调范围。
Magneto-Rheological (MR) fluid dampers suffer from low magnetic field utilization rate, perfor-mance degradation resulting from MR fluid settlements, and poor fluidity and high viscosity of MR grease leading to excessive initial damping force of the damper. In order to overcome these disad-vantages, a new type of magneto-rheological grease (MRG) damper is proposed which related to the displacement of piston valve. And its structure and operation principle was illustrated, according to the theory of hydraulics, choose the Bingham model, and then the mathematical model of damping force is set up, MATLAB software was used to simulate the detailed mode. In order to improve the performance of the damper, the base dimensions were optimized, and the results showed that the optimized damper had a lower initial damping force and a wider adjustable damping range than before.
出处
《建模与仿真》
2023年第3期1848-1957,共10页
Modeling and Simulation
