| 聚合物基复合材料发动机体的模态试验分析 |
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| 引用本文： | 闻荻江,张力,张恒.聚合物基复合材料发动机体的模态试验分析[J].农业工程学报,2005,21(2):22-24. |
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| 作者姓名： | 闻荻江 张力 张恒 |
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| 作者单位： | 苏州大学材料工程学院,苏州,215021;北京工商大学机械自动化学院,北京,100037;郑州大学机械与电子工程学院,郑州,450002 |
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| 基金项目： | 国家自然科学基金资助项目(59575014) |
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| 摘 要： | 该文针对复合材料发动机的振动问题，进行了试制的复合材料发动机体的模态试验研究，并利用计算机模态分析系统获得其前5阶模态参数及振型。试验表明，复合材料发动机机体的固有频率较金属机体高，同时因为机体复合材料属高内阻尼材料，它的黏弹性能有助于增加振动阻尼，因此，复合材料发动机机体具有优良的减振降噪性能；复合材料发动机机体的横向振动是比较严重，需要采取措施改善横向振动特性。试验结果为其结构的改进设计提供了依据。
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| 关 键 词： | 复合材料 发动机机体 模态分析 |
| 文章编号： | 1002-6819(2005)02-0022-03 |
| 收稿时间： | 2004/4/12 0:00:00 |
| 修稿时间： | 2004年4月12日 |
Modal experiment and analysis of resin based composite engine block |
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| Wen Dijiang,Zhang Li and Zhang Heng.Modal experiment and analysis of resin based composite engine block[J].Transactions of the Chinese Society of Agricultural Engineering,2005,21(2):22-24. |
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| Authors: | Wen Dijiang Zhang Li and Zhang Heng |
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| Abstract: | Modal experiment was carried out on the composite engine block. And the first 5-stage modal parameters were obtained as well as the modal vibration shapes. Results indicate that the natural frequencies of composite engine block are higher than that of metal engine block. Composite engine block has excellent vibration damping property and noise reducing property because composite has strong internal damp and its viscoelasticity can help increase the vibration damp. The transverse vibration of composite engine block was so serious that it was necessary to take measures to improve this defect. It laid the foundation for the structure design and improvement of the composite engine block. |
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| Keywords: | composite engine block modal analysis |
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