噪声与振动控制2018，Vol.38Issue(z1)：254-258,5.DOI:10.3969/j.issn.1006-1355.2018.Z1.053
车身地板阻尼材料的优化研究
Research of Optimization Method for Damping Materials of the Vehicle’s Floor
张若平 1王以鹏1
作者信息
- 1. 上海工程技术大学 汽车工程学院,上海 201620
- 折叠
摘要
Abstract
Abstrace : The method of noise and vibration reduction inside the car is mainly to lay damping materials and raise their damping efficiency based on the optimization of materials to reduce the friction and collision between the contact surfaces of components. In this paper, the relationships of loss factors of different viscoelastic-damping materials with temperature and frequency were measured based on the DMA dynamic viscoelastic spectrum test. Through the internal noise frequency spectrum tests for the damping material of original car and the other damping material with high loss factor (Dy-1) in the same environment condition, an anti-vibration material with stronger noise reduction capability was obtained. At the same time, based on the finite element theory, the layout of the damping material on the floor of the vehicle’s body is optimized by the topological optimization method and the integrated strain energy method. The topological optimization method was also used to optimize the loss factor under the 10th mode of the body floor. It was found that when the laying of the damping material reaches 60 %, the loss factor is close to that of the full damping material laying. By using the integrated strain energy method, when the laying of the damping material reaches 40 %, the damping effect is close to that of the full damping material laying.关键词
振动与波/车身地板/黏弹性阻尼材料/损耗因子/拓扑优化/综合模态应变能Key words
vibration and wave/body floor/viscoelastic damping material/loss factor/topological optimization/integrated modal strain energy分类
通用工业技术引用本文复制引用
张若平,王以鹏..车身地板阻尼材料的优化研究[J].噪声与振动控制,2018,38(z1):254-258,5.
