摘要
应用分区加权残值法对悬臂梁在一侧有水时的固有振动问题进行研究，考虑了水体压缩性的影响，导出了一般的加权积分方程式，并给出了具体的数值算例。计算结果表明，水体压缩性将进一步降低挡水结构的自振频率；对于高阶自振频率，不能略去水体压缩性的影响。
he subregion weighted residual method is proposed to investigate the free vibration of a cantilever beam placed against water。In the analysis water compressibility is considered and the general weighted integral equations are derived.The results of the numerical analysis employed show that the recommended method is correct and effective. With water compressibility taken into consideration,the frequency of the cantilever beam will be further reduced。The effect of water compressibility can not be neglected in the calculation of high frequencies of the beam。
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1994年第6期1-7,共7页
Journal of Hohai University(Natural Sciences)
关键词
挡水结构
水体
压缩性
自振特性
分区加权残值法
Water compressibility Subregion weighted residual method Characteristics of free vibration Structure to retain water Fluid-structure interaction
