摘要
随着国内车市发展,新生代家用车顾客对车的要求越来越高。相对前驱车型,后驱车传动链长、传动结构复杂,传动系零部件容易受扭矩波动激励产生共振,并传递给车体,引起车体零部件加振,导致车内噪声显著增加。为解决后桥共振引起的传动系统轰鸣问题,文章建立了后桥总成约束模态CAE分析模型,在车型设计前期计算出后桥总成约束模态及振型,匹配模态使后桥总成零部件约束模态避开传动系能量大的激励频率,显著降低车辆振动、提升整车内噪声学环境品质。
As the development of Chinese automotive market, customer need become stricter to new generation of auto.For rear wheel drive car, drivetrain is longer than front wheel drive car, so there is more chance to excite the drivetrain vibration. And the vibration of drivetrain easily transfers to body, making the car interior noise unacceptable. To solve the drivetrain booming problem caused by rear axle exciting, the CAE analysis model of rear axle is built to calculate the constraint mode, including the mode frequency and the mode shape. The mode frequency of rear axle should be different with drivetrain resonant frequency to reduce the vibration and improve vehicle sound quality.
作者
朱晓杰
任良顺
Zhu Xiaojie;Ren Liangshun(Nexteer Automotive(Suzhou) Co., Ltd, Jiangsu Suzhou 215026;SAIC GM Wuling Automobile Co., Ltd., Guangxi Liuzhou 545007)
出处
《汽车实用技术》
2019年第8期61-62,69,共3页
Automobile Applied Technology
关键词
CAE
后桥
约束模态
模态匹配
CAE
rear axle
constrained modal
modal coupling
作者简介
朱晓杰,资深产品工程师,助理工程师,就职于耐世特汽车系统(苏州)有限公司工程技术中心;任良顺,传动系统主任工程师,高级工程师,就职于上汽通用五菱汽车股份有限公司技术中心。
