NVH analysis and improvement of a vehicle body structure using DOE method

被引：0
|
作者：
Shahram Azadi
Mohammad Azadi
Farshad Zahedi
机构：
[1] K.N. Toosi University of Technology,Department of Mechanical Engineering
[2] Sharif University of Technology,Department of Mechanical Engineering
来源：
Journal of Mechanical Science and Technology | 2009年 / 23卷
关键词：
Vehicle body; FEM; DOE method; Modal analysis; Frequency map; NVH; RSM;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The improvement of a vehicle body structure under the constraint of noise, vibration and harshness (NVH) behavior is investigated by using design of experiments (DOE) method. First, car body geometry is modeled in CATIA and meshed in HYPERMESH software. Then, a modal analysis between 0–50 Hz is done by MSC NASTRAN. A frequency map of the body is extracted and compared with a reference map to identify shortcomings. By using factorial and response surface Methods (RSM), optimization of the NVH performance is accomplished. An algorithm is proposed to improve the car NVH behavior. At last, in order to verify the present algorithm, forced vibration is analyzed under real road inputs for the model before and after improvement.
引用
收藏
页码：2980 / 2989
页数：9
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