噪声与振动控制2019，Vol.39Issue(4)：141-144,4.DOI:10.3969/j.issn.1006-1355.2019.04.026
汽车座椅骨架固有频率的不确定度研究
Research on the Uncertainty of Natural Frequencies of Car Seat Frames
余慧杰 1许飞 1张鑫侃2
作者信息
- 1. 上海理工大学 机械工程学院,上海 200093
- 2. 上海理工大学 机械工程学院,上海 200093
- 折叠
摘要
Abstract
In engineering, the randomness of structural parameters can lead to the uncertainty of natural frequencies of the structure, and the natural frequency is one of the important factors affecting the vibration and noise of the structure. Therefore, it is especially important to study the uncertainty of the natural frequencies of the structure. This paper presents a natural frequency uncertainty evaluation method based on the response surface proxy model. Firstly, a finite element model is established for the car seat skeleton, and the design variables which have great influence on the natural frequency are selected by the experimental design so as to construct the response surface proxy model. Based on the structural randomness factors and the response surface proxy model, the influence of the design variables on the uncertainty and distribution of the first three natural frequencies of the car seat skeleton is analyzed. Finally, the results are verified by the combination of experimental design and Monte Carlo method. The results provide a theoretical guidance for determining the effects of different samples on the natural frequencies.关键词
振动与波/有限元分析/固有频率/响应面/不确定度/正态分布Key words
vibration and wave/ finite element analysis/ natural frequency/ response surface/ uncertainty/ normal distribution分类
机械制造引用本文复制引用
余慧杰,许飞,张鑫侃..汽车座椅骨架固有频率的不确定度研究[J].噪声与振动控制,2019,39(4):141-144,4.
