【摘要】 本文对圆弧形拱式跨越管道进行模态分析,采用附加质量法和流体单元两种不同的方法来模拟管道内液体,分析流固耦合效应对管道动力特性的影响,并比较了两种方法的异同。同时还分析了矢高、直径、管壁厚、跨度等参数对管道自振频率的影响。本文得到的结果,能为圆弧形拱式跨越管道的设计和计算提供参考。更多还原

【Abstract】 The modals of circular arch suspending pipeline was analyzed in the paper.Added mass method and fluid element method were used to simulate fluid in pipeline respectively.The influence of fluid-solid coupling on pipeline’s dynamic characteristics was researched.Then results on dynamic characteristics of two methods were compared.In addition,the effects of span height,diameter,thickness and span on natural frequency were studied.The results obtained from this paper can provide reference for the design and calculation of circular arch suspending pipeline.更多还原