In order to study the vibration of thin plate in the water,various sot~vare,such as ABAQUS,ANSYS Workbench and Virtual lab,are adopted to carry out the numerical calculation.The operation procedures of the software are almost the same.The calculated results show that the several ex-frequencies agree well with the experiment result.When high frequency is calculated,some methods may exhibit some limit.The methods in the text can be used to study the noise radiation of underwater structure.%针对薄板在水中的振动,采用Abaqus,AnsysWorkbench,Virtual lab等软件进行数值计算.几种软件在操作流程上基本一致,与实验结果比较表明,各个软件在计算前几阶模态频率均十分接近.在高频计算时,有些方法可能会存在一些局限性.文中方法可作为水下结构声辐射性能研究有力的手段.
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