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为了研究抗蛇行减振器油液温度对其动态特性和车辆稳定性的影响以及抗蛇行减振器服役过程中的温变特性,对我国某高速动车抗蛇行减振器进行了试验和动力学仿真分析。试验结果表明,在油液正常工作温度范围内,减振器吸收的能量、动态阻尼及动态刚度随油液温度的降低而增加;而当油液温度超出抗蛇行减振器油液正常工作范围时,减振器吸收的能量、动态阻尼及动态刚度随油液温度降低而降低。减振器在非正常工作温度范围内服役,2 h内温度和动态特性变化不明显,且减振器没有恢复到正常工作。仿真结果也表明,在油液正常工作温度范围内,蛇行临界速度随油液温度的降低而增大,而当油液温度超出油液正常工作温度范围时,蛇行临界速度随温度降低而降低。
In order to study the influence of anti-snake shock absorber oil temperature on its dynamic characteristics and vehicle stability and the anti-snake shock absorber during service temperature change characteristics, a Chinese high-speed anti-snake motorcycle shock absorber was tested and kinetics Simulation analysis. The experimental results show that the absorbed energy, dynamic damping and dynamic stiffness of shock absorbers increase with the decrease of oil temperature in the normal operating temperature range of the oil. When the oil temperature exceeds the normal operating range of the anti-snake shock absorber oil , The absorbed energy, dynamic damping and dynamic stiffness of the shock absorbers decrease as the oil temperature decreases. Shock absorber service in the non-normal operating temperature range, 2 h temperature and dynamic characteristics of the change is not obvious, and the shock absorber did not return to normal work. The simulation results also show that the critical speed of meandering increases with the decrease of oil temperature within the normal operating temperature range of oil and decreases with the decrease of temperature when the temperature of oil exceeds the normal operating temperature range of oil.