| 梁-阶梯板耦合结构的功率流 |
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| 引用本文： | 仪垂杰,连小珉,蒋孝煜.梁-阶梯板耦合结构的功率流[J].清华大学学报(自然科学版),1996(3). |
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| 作者姓名： | 仪垂杰 连小珉 蒋孝煜 |
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| 作者单位： | 清华大学汽车工程系!北京100084 |
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| 摘 要： | 当板的厚度较大和变化时，如厚板或阶梯类的板，这时板的剪切、转动惯量及板的面内运动，将对板结构的振动功率流产生影响。基于功率流的分析方法和梁、板动力学的原理，推导了梁一阶梯板耦合结构的功率流表达式。计算和测量结果表明：振动频率较低时，板厚比增大使得从梁传递到阶梯板的功率流减小；振动频率较高时，梁－阶梯板结构的传递功率流小于梁－薄板结构的传递功率流。在这类板结构功率流估计中应注意这些差异，否则将引起功率流估计的误差。
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| 关 键 词： | 梁 板 功率流 振动噪声 |
Power flow in assemblies of beam-flat plate with stepped discontinuity |
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| Yi Chuijie,Lian Xiaomin,Jiang Xiaoyu.Power flow in assemblies of beam-flat plate with stepped discontinuity[J].Journal of Tsinghua University(Science and Technology),1996(3). |
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| Authors: | Yi Chuijie Lian Xiaomin Jiang Xiaoyu |
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| Abstract: | Under the condition of different thickness plate such as a flat plate with stepped discontinuity, the effects of shear, mass moment of inertia and in-plane wave generation on the power flow in the structures must be accounted. Based on the principles of power flow analysis and structural dynamics, a model on power flow for assemblies of beam-flat plate with stepped discontinuity is set up in this paper. The calculation results from the power now model are well conformed with the results measured by the method of vibration intensity. |
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| Keywords: | beams plates power flow vibration noise |
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