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椭圆管道与连接器过盈装配应力有限元分析

Science Technology and Engineering(2020)

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Abstract
基于组合厚壁圆筒理论和管道与连接器过盈装配有限元计算,分析了海底椭圆管道与机械连接器水下过盈装配的应力问题.采用数值模拟的方法分析过盈装配过程中的产生的极值有效应力并引入椭圆度应力系数大小衡量应力集中效应强弱.结果表明,管道接触应力与等效过盈量密切相关,而椭圆度影响过盈面接触应力分布的均匀性.椭圆度应力系数越大,管道应力集中效应越明显,承载的应力越大.随着椭圆度增大,通过适当增加等效过盈量的办法,即可增大过盈装配应力的承载能力.
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