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| 轿车白车身模态分析和局部刚度优化方法研究 | |
| 引用本文： | 张国胜,周炜,孟凡亮,张大千,张天侠.轿车白车身模态分析和局部刚度优化方法研究[J].公路交通科技,2010,27(4). |
| 作者姓名： | 张国胜 周炜 孟凡亮 张大千 张天侠 |
| 作者单位： | 1. 东北大学,机械工程与自动化学院,辽宁,沈阳,110004;交通运输部公路科学研究院,北京,100088 2. 交通运输部公路科学研究院,北京,100088 3. 奇瑞汽车公司,安徽,芜湖,241009 4. 东北大学,机械工程与自动化学院,辽宁,沈阳,110004 |
| 基金项目： | 国家自然科学基金资助项目(5087042);;国家科技支撑计划资助项目(2009BAGBA04) |
| 摘 要： | 以轿车白车身为研究对象,基于前处理软件Hypermesh和有限元分析软件MSC.Nastran,应用有限元分析理论,建立了白车身有限元模型。通过有限元模态分析和试验模态分析的方法,分别得到白车身的固有频率、相应的振型等模态参数。将试验结果与理论分析结果进行对比,验证了白车身有限元模型的有效性。从振动、强度角度考虑,分析了该白车身所承受内外激励的影响。根据应变模态的局域性特点,提出利用有限元模型各阶模态应变能分布,确定车身结构弹性变形最大位置的方法,有针对性地加强车身的局部刚度。结果表明,该方法具有较好的实际工程应用价值。 |
| 关 键 词： | 汽车工程 模态分析 模态应变能 白车身 局部刚度 |
Modal Analysis and Local Rigidity Optimization for Body-in-white of Car |
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| ZHANG Guosheng,ZHOU Wei,MENG Fanliang,ZHANG Daqian,ZHANG Tianxia.Modal Analysis and Local Rigidity Optimization for Body-in-white of Car[J].Journal of Highway and Transportation Research and Development,2010,27(4). | |
| Authors: | ZHANG Guosheng ZHOU Wei MENG Fanliang ZHANG Daqian ZHANG Tianxia |
| Institution: | 1.School of Mechanical Engineering & Automation;Northeastern University;Shenyang Liaoning 110004;China;2.Research Institute of Highway;Ministry of Transport;Beijing 100088;3.Chery Automobile Co.;Ltd.;Wuhu Anhui 241009;China |
| Abstract: | Using preprocessing software Hypermesh and FEA software MSC.Nastran,the detailed finite element model of car body-in-white(BIW) was established based on the theory of finite element.Finite element modal analysis and experimental modal analysis were conducted to get the modal parameters of BIW ,including natural frequencies and corresponding mode shapes respectively.With comparison of the result of the simulation with that of test,the validity of the FEA model was verified.From the view of vibration and stre... |
| Keywords: | automobile engineering modal analysis modal strain energy body-in-white local rigidity |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |