| 弹性-粘弹性复合板模态密度研究 |
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| 引用本文： | 王宏伟,赵德有.弹性-粘弹性复合板模态密度研究[J].大连理工大学学报,2001,41(1):81-84. |
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| 作者姓名： | 王宏伟 赵德有 |
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| 作者单位： | 大连理工大学 船舶工程系, 辽宁 大连 116024 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助项目!(1999014103). |
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| 摘 要： | 利用弹性最小势能原理和变分法，推导出弹性－粘弹性复合板的弯曲振动模态密度计算公式，系统地分析了阻尼层厚度、温度和频率对模态密度的影响规律，得出自由阻尼板的模态密度随阻尼层厚度增加而增大，约束阻尼板的模态密度随阻尼层厚度增加而减小；自由阻尼板的模态密度随温度的升高而增大，而约束阻尼板的模态密度受温度影响较小等若干结论。
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| 关 键 词： | 模态密度 阻尼 复合板 统计能量分析 弹性 粘弹性 振动 噪声控制 |
| 文章编号： | 1000-8608(2001)01-0081-04 |
Study of modal density of elastic-v iscoelastic composite plate |
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| WANG Hong-wei,ZHAO De-you.Study of modal density of elastic-v iscoelastic composite plate[J].Journal of Dalian University of Technology,2001,41(1):81-84. |
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| Authors: | WANG Hong-wei ZHAO De-you |
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| Abstract: | Based on the theory of elasticity, according to the leastpotential energy and variation principle, the formulas of modal densities of bending vibration of elastic-viscoelastic composite plate are derived, and the dependence of the modal densities on the thickness of damping layer, temperature and frequency parameter is discussed. The following conclusions are drawn: with the increment of the thickness of damping layer, the modal densities of free damping plate increase, but the modal densities of constrained damping plate decrease; with the increment of temperature, the modal densities of free damping plate increase, but the variety of the modal densities of constrained damping plate is very little. |
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