| 升降式防密门扇静力与动力有限元分析 |
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| 引用本文： | 刘海江,孙玉国. 升降式防密门扇静力与动力有限元分析[J]. 振动、测试与诊断, 2003, 23(4): 271-272 |
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| 作者姓名： | 刘海江 孙玉国 |
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| 作者单位： | 同济大学机械工程学院,上海,200092 |
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| 基金项目： | 上海市人防办科技攻关资助项目 (编号 :1 998- 0 1) |
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| 摘 要： | 利用有限元方法对防护密闭门扇的应力、变形和振动模态进行了计算分析，在保证结构强度和抗震性能的同时降低重量。计算结果表明，门扇的最大弯曲应力低于材料的屈服应力，面板厚度对增加门扇的抗弯刚度效果明显，门扇的抗震性能较好。
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| 关 键 词： | 高速公路 山体段隧道 防护密闭门 有限元分析 振动模态 等效静载法 抗弯强度 |
| 修稿时间： | 2003-05-19 |
Static and Dynamic Analysis of Protective Closure Based on Finite Element Method |
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| Liu Haijiang Sun Yuguo. Static and Dynamic Analysis of Protective Closure Based on Finite Element Method[J]. Journal of Vibration,Measurement & Diagnosis, 2003, 23(4): 271-272 |
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| Authors: | Liu Haijiang Sun Yuguo |
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| Abstract: | The wing of a protective closure obstruction valve is directly excited by shock waves and other random disturbances.To secure its stability,the static and dynamic characteristics of the wing are analyzed by using Finite Element Method.The stresses and displacements of the wing are calculated numerically.The natural frequencies and modes of the valve are also presented.The results show that the valve's maximum flexural stress is 309 MPa,which is lower than its yielding limit 345 MPa.The thickness of the valve skin plate is quite effective for increasing valve's flexural rigidity.The first natural frequency of the wing is 36.65 Hz,which is high enough for avoiding the structure resonance with a seismic shock. |
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| Keywords: | protective closure obstruction valve strength strain vibration mode finite element analysis |
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