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弹性板结构面内振动特性分析与实验研究

DOI: 10.3969/j.issn.1006-7043.201403004

Keywords: 弹性板结构, 面内振动, 能量原理, 傅里叶级数, 瑞利-里兹, 实验研究

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Abstract:

针对现有弹性板面内振动特性研究尚不充分,本文基于能量原理建立了弹性板结构面内模态预报模型,并开展了相关实验测量进行验证分析.采用二维改进傅里叶级数方法对弹性板结构面内振动耦合位移场函数进行构建,结合瑞利-里兹程式进而得到弹性约束边界条件下矩形板结构面内自由振动系统特征矩阵方程.结果表明:所得弹性板结构面内振动模态参数与文献数据吻合良好,验证了本模型的正确性与可靠性.随后,搭建了相关实验台架,对弹性板结构面内振动模态参数进行测试,并对实验环节可能引起的偏差因素进行了讨论分析.

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