车辆驱动桥NVH开发工作流程及性能指标体系

车辆驱动桥NVH开发工作流程及性能指标体系(中文6400字,英文4500字)
摘要：
在全轮驱动或后轮驱动车辆的传动系统中，驱动桥是主要的传动部件。从噪声和振动的角度来看，驱动桥不仅是发动机激励的传递路径，而且由于其内齿轮组的啮合运动而成为激励源。驱动桥作为一种精密装配，其设计参数和制造工艺对车辆的NVH性能有很大的影响。本文提出了一种车辆驱动桥NVH开发的工作流和级联目标系统。为了有效地从根本上控制与驱动桥有关的NVH性能，本文首先研究了零部件的各种运动学和结构特性，得出了关键的设计参数。为了获得这些参数的可接受范围，在分析总结前人研究成果的基础上，进行了大量的CAE仿真工作，包括有限元分析、多体仿真和专业齿轮设计软件仿真。在装配了具有优化参数的原型轴后，在试验台和车辆上进行了实际的NVH试验，以验证设计的正确性。为了满足批量生产的需要，基于NVH性能与检测参数的相关性分析，提出了一种在线检测程序。最后，总结了生产流程和检验标准，为车轴工程师在生产开发的早期阶段提供参考。
Proposed Workflow and Performance Targets System for NVH Development of Vehicle Drive Axle
Abstract
n the driveline system of all-wheel drive or rear-wheel drive vehicle, drive axle is a major transmission component.
Within the perspective of noise and vibration, drive axle is not only a transfer path of the excitation from engine, but also an excitation source because of the engaging movement of its inner gear sets. As a precision assembly, the design parameters and manufacture processes of drive axle have a great impact on the NVH performance of vehicle. This paper proposes a workflow and a cascaded targets system for NVH development of vehicle drive axle. In order to efficiently and fundamentally control the NVH performance related to drive axle, this work first studied various kinematical and structural characteristics of component parts to conclude the key design