弹性环阻尼器对涡轮增压器转子动力性能影响研究

发布时间：2018-06-18 03:01

本文选题：涡轮增压器 + 阻尼器　；参考：《车用发动机》2016年04期

【摘要】：以高速涡轮增压器滚珠轴承转子系统弹性环阻尼器(ERSFD)为研究对象,采用有限元分析以及挤压油膜理论对弹性环支承刚度、油膜压力场分布、油膜刚度阻尼以及滚珠轴承转子系统动力学特性等进行了分析研究,并与挤压油膜阻尼器(SFD)进行对比分析。研究发现,弹性环阻尼器的交叉刚度和阻尼很小,有效地改善了挤压油膜阻尼器刚度阻尼自由度耦合问题,刚度阻尼的非线性得到明显的抑制。采用六凸台弹性环阻尼器与滚珠轴承串联组合的增压器进行了台架试验,并与动力学计算结果进行了对比分析。
[Abstract]:The elastic ring damper of high speed turbocharger ball bearing rotor system (ERS FDD) is studied. Finite element analysis and squeeze film theory are used to analyze the supporting stiffness of elastic ring and the distribution of oil film pressure field. The stiffness and damping of oil film and the dynamic characteristics of ball bearing rotor system are analyzed and compared with that of squeeze film damper (SFDs). It is found that the cross stiffness and damping of elastic ring dampers are very small, which effectively improves the coupling problem of stiffness and damping degrees of freedom of squeeze film dampers, and the nonlinear stiffness damping is obviously suppressed. The turbocharger combined with elastic ring damper and ball bearing is tested on the bench, and the results are compared with those of dynamic calculation.
【作者单位】：柴油机增压技术重点实验室;西安交通大学;河北华北柴油机有限责任公司;中国北方发动机研究所(天津);
【基金】：国防科技重点实验室基金(9140C3305030902)
【分类号】：TK403

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