现代制造工程Issue(10)：73-77,5.DOI:10.16731/j.cnki.1671-3133.2017.10.014
基于板梁混合结构力学模型的车身顶盖NVH优化
NVH optimization for car roof based on the plate-beam structural mechanics model
摘要
Abstract
In order to optimize the NVH performance for roof ,firstly,based on the plate-beam structural dynamics theory ,the dy-namic model of roof structure was established ,and its calculation formula for natural frequencies is obtained .Secondly ,study re-spectively the impact on dynamic characteristics due to changing of aspect ratio of roof reinforced beam and plate -beam thickness ratio.And then uses the structural topology optimization and the modal strain energy analysis technology ,obtained the sensitive structures of a car roof for bend vibration modal .Finally,synthesize the roof dynamic mechanics theory and the car body modal characteristics ,puts forward reasonable optimization schemes for NVH performance , which can provide theoretical basis and scheme for the roof structure optimization .关键词
顶盖/NVH性能/板梁混合结构Key words
roof/NVH performance/plate-beam structural分类
交通工程引用本文复制引用
张宇,韦正..基于板梁混合结构力学模型的车身顶盖NVH优化[J].现代制造工程,2017,(10):73-77,5.基金项目
国家科技部科研院所专项资金项目(2014EG120161) （2014EG120161）
