| 带附加气室空气弹簧悬架动力学特性分析 |
| Analysis on Dynamics Properties of Air Suspension with Additional Air Chamber |
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| DOI： |
| 中文关键词: 带附加气室空气弹簧悬架 阻尼特性 刚度特性 |
| 英文关键词: air suspension with additional air chamber damping characteristics stiffness characteristics |
| 基金项目:国家自然科学基金资助项目（11272220）；河北省自然科学基金资助项目（E2013210018） |
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| 中文摘要: |
| 基于气体热力学和气体动力学，推导了带附加气室空气弹簧垂向刚度表达式，建立了节流孔质量流率数学模型，并在AMESim平台下建立了带附加气室空气弹簧悬架的1/4仿真模型，分析了节流孔横截面积和附加气室容积对带附加气室空气弹簧悬架动力学特性的影响。研究结果表明：节流孔横截面积是影响带附加气室空气弹簧悬架阻尼特性的关键因素，随着节流孔横截面积的增大，带附加气室空气弹簧悬架阻尼特性呈现先增大后减小的趋势；增加附加气室可以减小带附加气室空气弹簧悬架系统刚度，增大附加气室容积可以降低带附加气室空气弹簧悬架系统的自振频率，有利于改善带附加气室空气弹簧悬架系统的隔震性能。 |
| 英文摘要: |
| Based on the thermodynamics and kinetics of gas flow，the vertical stiffness expression was developed for the air suspension with additional air chamber，a mathematical model of mass flow rate through the orifice was established，and the 1/4 simulation model of the air suspension was established in AMESim platform.The influence of cross-sectional area of the orifice and the volume of additional air chamber on the dynamic characteristics of the air suspension was analyzed.The results showed that，the cross sectional area of the orifice was a key factor affecting the damping characteristics of air suspension，and when it increased，the damping properties were improved first and then reduced.Use of additional chamber could reduce the stiffness of the suspension system，and increase of its volume reduced the self-vibration frequency and improved the damping properties of the suspension system. |
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