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首页> 外文期刊>Key Engineering Materials >Limit Load Interaction of Welded Piping Branch Junctions Subjected to Combined Internal Pressure and Bending
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Limit Load Interaction of Welded Piping Branch Junctions Subjected to Combined Internal Pressure and Bending

机译：内压和弯曲共同作用下的焊接管道分支节点的极限载荷相互作用

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摘要

Systematic detailed non-linear finite element (FE) analysis are described for limit load interaction of piping branch junctions subjected to internal pressure and bending. The results show that for the tees with a small diameter ratio, the limit load interaction closes to the linear expression; as diameter ratio d/D increasing, the interaction relationship tends to parabolic equation; for the piping branch junction with diameter ratio equaling to unit, the limit load combinations is approximately quadratic. Compared to the individual limit bending value, internal pressure slightly increases the bending capability as it is in the range of 0.2≤ P/P_L ≤ 0.4, especially for the cases of the main pipe with thinner wall. A closed limit load solution is obtained from the FE results through accommodating the geometrical parameter influence, and validated by using experimental results.
机译：描述了系统详细的非线性有限元（FE）分析，以分析承受内部压力和弯曲的管道分支结的极限载荷相互作用。结果表明，对于直径比较小的三通，极限载荷相互作用接近线性表达式。随着直径比d / D的增加，相互作用关系趋于抛物线方程。对于直径比等于单位的管道分支结，极限载荷组合约为二次方。与单个极限弯曲值相比，内部压力在0.2≤P / P_L≤0.4的范围内会稍微提高弯曲能力，尤其是对于壁较薄的主管。通过适应几何参数影响，从有限元结果中获得封闭极限载荷解，并通过实验结果进行验证。

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