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充液弯管连续/离散模型振动的动刚度解法
Dynamic stiffness method for vibration of fluid-filled curved pipe by continuous/discrete model
投稿时间:2018-04-04  修订日期:2018-05-09
DOI:
中文关键词:  动刚度法;充液管道;振动  弯管;计算效率
英文关键词:Dynamic Stiffness Method  Fluid-filled pipes  Vibration  Curved pipes  Calculation efficiency
基金项目:江苏省自然科学基金-青年基金
作者单位E-mail
朱竑祯 南京航空航天大学 zhznuaa@163.com 
王纬波 中国船舶科学研究中心  
殷学文 中国船舶科学研究中心  
高存法 南京航空航天大学  
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中文摘要:
      由充液弯管三维振动模型切入,应用动刚度法构建了弯管及直管单元的振动求解方法,进而用于组装求解充液管系的振动,可同时适用于含弯管单元的连续模型或只含直管单元的离散模型;通过算例对比证明动刚度法比传递矩阵法和有限元法在计算效率和精度上有所提升,与充液L型管道振动实验测得加速度频响曲线对比验证了本文对于管道组装的计算方法的有效性,此外还分析了连续模型和离散模型的区别及适用范围。
英文摘要:
      The three-dimensional vibration model of fluid-filled curved pipe was investigated. Dynamic stiffness method was utilized to solve the vibration problem of curved and straight pipe elements. And then, fluid-filled pipe systems were constructed, which was applicable for both continuous models containing curved pipe elements and discrete models formed by straight pipe elements. Comparison with finite element method and transfer matrix method reveal that the calculation efficiency and accuracy are improved by dynamic stiffness method. The validity of the present computational method for pipe assembly is verified through the comparison with experimental acceleration response curves of L-shaped fluid-filled pipe system. Furthermore, the continuous and discrete models are analyzed in order to clarify the distinction and their respective scope of application.
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