Euler Buckling of Idealised Horizontal Pipeline Imperfections
Euler Buckling of Idealised Horizontal Pipeline Imperfections
复制标题
理想水平管道缺陷的欧拉屈曲
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
A. Rathbone
中科院分区：
文献类型：
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作者：
G. Cumming;A. Rathbone
管道引入的缺陷只有在安装完成后才能知道；因此，常用的方法是对理想水平缺陷进行有限元分析，以确定临界屈曲力。Rundsag et al . 2008[1]研究表明，蛇形管线几何形状的临界屈曲力与管道弯曲半径成正比。Rathbone et al . 2008[2]研究表明，随着拱长减小，管道临界屈曲力与偏置角的变化成正比。本文考虑欧拉屈曲方法，研究了管道最小临界屈曲力与管道水平偏移角的关系。根据管道刚度和重量、偏移角和摩擦系数估算出的临界弯曲载荷关系，然后与理想的有限元模型进行比较。©2010 asme
Imperfections introduced by pipelay can not be known until installation is complete; therefore a common approach is to perform finite element analysis of idealised horizontal imperfections to determine critical buckling forces. Rundsag et al 2008 [1], showed that the critical buckling force for a snake lay geometry is directly proportional to the pipeline bend radius. Rathbone et al 2008 [2] showed that, with decreasing arch lengths, the pipeline critical buckling force is proportional to the change in the offset angle. This paper looks at the relationship between the minimum critical buckling force and the horizontal offset angle of the pipeline, considering an Euler buckling approach. The resulting relationship that estimates the critical buckle load based on pipeline stiffness and weight, offset angle and friction factor is then compared against idealised finite element models.© 2010 ASME