某新型轻卡转向系统模态对标及优化研究

转向系统模态控制是整车NVH开发的重要内容.文章针对某新型轻卡的怠速方向盘抖动问题,讨论了转向系统有限元模型的准确度影响因素,并与实测的方向盘频响曲线做对比.在模态及应变能分析结果上探讨了模态提升的主要方向,在此基础上优化转向系统主要部件,取得了较好效果.文章提供的转向系统模型对标及优化方法具有指导意义,对类似工程问题...

Research of Calibration and Optimization on Steering System Modal of a New Type Light Truck

Steering system modal is one of important parts for full-vehicle NVH development.In the view of vibration of steering wheel used by a new type light truck,the influence factors of the accuracy of steering system’s finite element model are discussed,and compared with FRF curve of steering wheel testing.Points out the measures to improve frequency based on the analysis of modal and strain energy,then optimizes the main parts,achieves better results.The calibration and optimization methods provided by this paper have directive significance,also have certain reference value to similar engineering problems.