摘要
本文运用有限元数值计算方法,并结合ANSYS通用有限元软件,开展了典型水下两端封闭分舱圆柱壳结构低阶模态(包括呼吸模态和弯曲模态)固有特性数值计算研究,给出了相应的模态固有频率和固有振型分布结果,并开展了讨论与分析,这可为进一步开展水下大尺度结构振动引起的低频辐射噪声线谱特征分析等研究提供支持。
In this paper, the numerical computation of low order modal characteristics of typical underwater cylindrical shell with two end plates and multiple cabins structure is investigated based on the finite element method and ANSYS software. The inherent characteristics of breathing mode and bending mode are given and analyzed in detail. The aforementioned results are helpful to study and analyze the low-frequency radiated noise line spectrum characteristics of large scale underwater structure.
引文
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