| 火炮身管固有振动特性的有限元传递矩阵法 |
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| 引用本文： | 于海龙,芮筱亭,何斌,王广伟. 火炮身管固有振动特性的有限元传递矩阵法[J]. 弹道学报, 2006, 18(3): 62-64 |
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| 作者姓名： | 于海龙 芮筱亭 何斌 王广伟 |
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| 作者单位： | 南京理工大学,动力工程学院,南京,210094;南京理工大学,动力工程学院,南京,210094;南京理工大学,动力工程学院,南京,210094;南京理工大学,动力工程学院,南京,210094 |
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| 摘 要： | 利用二节点Hemite梁单元对火炮身管进行单元离散,利用传递矩阵进行离散单元之间状态矢量的传递,推导出火炮身管总传递矩阵及振动频率方程.对某火炮身管固有振动特性进行了分析,计算得到了振动频率和振型.用有限元传递矩阵法分析火炮身管固有振动特性,矩阵阶次低,计算所得的固有频率与实际固有频率接近,误差在允许的范围内.
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| 关 键 词： | 有限元 传递矩阵法 火炮身管 固有振动 变截面结构 |
| 文章编号： | 1004-499X(2006)03-0062-03 |
| 收稿时间： | 2005-09-28 |
| 修稿时间： | 2005-09-28 |
Finite Element Transfer Matrix Method of Gun Tube Natural Vibration Characteristic |
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| YU Hai-long,RUI Xiao-ting,HE Bin,WANG Guang-wei. Finite Element Transfer Matrix Method of Gun Tube Natural Vibration Characteristic[J]. Journal of Ballistics, 2006, 18(3): 62-64 |
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| Authors: | YU Hai-long RUI Xiao-ting HE Bin WANG Guang-wei |
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| Affiliation: | Power Engineering College, NUST, Nanjing 210094, China |
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| Abstract: | Gun tube was partitioned by using two-node Hemite beam element, and state vector among elements was transferred by transfer matrix. Total transfer matrix and vibration frequency equation of gun tube were deduced. Natural vibration characteristic of gun tube was analyzed triumphantly. Vibration frequency and mode shape were obtained. Matrix step is low by using the finite element transfer matrix method. Natural frequency by calculation approaches to actual natural frequency and the error is allowable. |
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| Keywords: | finite element transfer matrix method gun tube natural vibration variablecross-section structure |
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