• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>SAE Noise and Vibration Conference and Exhibition >Investigation and Improvement of a Bouncing Torsional Vibration in Automotive Dual Mass Flywheel by Combining Testing and 1D CAE Modeling Approach
【24h】

Investigation and Improvement of a Bouncing Torsional Vibration in Automotive Dual Mass Flywheel by Combining Testing and 1D CAE Modeling Approach

机译：通过结合测试和1D CAE建模方法调查和改进汽车双重批量飞轮中弹性扭转振动

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Dual mass flywheel (DMF) is a well-known isolation system for vehicle drivetrain. DMF has two typical elastic energy storage systems: long travel arc springs and in-series spring units (including two or more springs) and sliding shoes connected in series. DMF has such complex nonlinear characteristics as torque-dependent torsional stiffness and rotational speed-dependent hysteresis friction due to its dependency of centrifugal force that is applied to components and radial force of springs. Because of this complexity, sub-harmonic vibration (SHV) may occur under certain circumstances, such as under light-load and high-rotational conditions. In general, since SHV’s frequency is 1/2 or 1/3 of the engine’s combustion frequency and may cause human discomfort, DMF must be designed robust against such nonlinear vibration. In this paper to reduce the SHV occurrence and to show a more robust design indicator, the SHV causing the mechanism is researched by testing and 1D CAE modeling. In detail, DMF interior behavior in high-speed rotation is clarified with high-speed cinematography on a test bench, and high-resolution relative torsional angle of DMF is obtained by evaluating the actual vehicle with a conventional four-cylinder gasoline engine, which is equipped with in-series spring unit type DMF. As a result, bouncing torsional vibration (BTV) might occur when sliding shoe and secondary-side driven flange contact each other, and that is triggering the SHV excitation. 1D CAE model, whose development is based on the tested mechanism, is verified since the substantially same BTV and SHV occur between tests and simulation results. According to 1D CAE, highly sensitive parameters and ideas for reducing SHV can be found with sensitivity analysis of the physical DMF parameters. The effect of those parameters was confirmed with vehicle tests.
机译：双重批量飞轮（DMF）是一种用于车辆动力传动系统的着名隔离系统。 DMF有两个典型的弹性储能系统：长途旅行弧弹簧和系列式弹簧单元（包括两个或更多个弹簧）和串联连接的滑动鞋。由于其对弹簧的组件和径向力的依赖性，DMF具有如此复杂的非线性特性，作为扭矩依赖性僵硬和旋转速度滞后摩擦，其依赖于塑料的离心力。由于这种复杂性，在某些情况下可能发生副谐波振动（SHV），例如在轻负载和高旋转条件下发生。通常，由于SHV的频率为发动机的燃烧频率的1/2或1/3，并且可能导致人类的不适，必须对这种非线性振动设计DMF。在本文中，减少了SHV的发生并显示了更坚固的设计指示器，通过测试和1D CAE建模研究了SHV导致机制。详细地说，在测试台上的高速电影上阐明了高速旋转中的DMF内部行为，通过使用传统的四缸汽油发动机评估实际车辆来获得DMF的高分辨率相对扭转角度，即配有系列式弹簧单元DMF。结果，当滑动鞋和次级侧驱动的凸缘彼此接触时，可能会发生扭转扭转振动（BTV），并且这是触发SHV激发。 1D CAE模型，其开发基于测试机制，验证了测试和仿真结果之间的基本相同的BTV和SHV。根据1D CAE，可以在物理DMF参数的灵敏度分析找到高度敏感的参数和用于减少SHV的想法。用车辆测试确认这些参数的效果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号