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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.1: Codes and Standards >PLASTIC COLLAPSE ASSESSMENT PROCEDURE FOR VESSEL WITH LOCAL THIN AREA SIMULTANEOUSLY SUBJECTED TO INTERNAL PRESSURE AND EXTERNAL BENDING MOMENT
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PLASTIC COLLAPSE ASSESSMENT PROCEDURE FOR VESSEL WITH LOCAL THIN AREA SIMULTANEOUSLY SUBJECTED TO INTERNAL PRESSURE AND EXTERNAL BENDING MOMENT

机译：同时承受内部压力和外部弯曲力矩的局部薄壁区域船的塑性塌陷评估程序

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摘要

Assessment of the local thin area should be undertaken for both tension and compression bending. In this paper, simplified reference stresses for a flaw in a cylinder are proposed. By using these results, a newly-developed p-M (internal pressure ratio and external bending moment ratio) diagram which can evaluate the plastic collapse condition for pressure equipment such as vessels, piping and storage tanks with a local thin area simultaneously subjected to internal pressure, p, and external bending moment, M, due to earthquake, etc. is proposed. The p-M line is verified by comparison with the FEA results and the numerous results of experiment for a cylinder with a volumetric flaw obtained through the reference literatures.It was clarified that the differences in plastic collapse limit between the p-M line and DNV guideline under both internal pressure and compression moment became evident where the outer diameter/wall thickness of a cylinder is large and the yield ratio of the material is small.
机译：应评估局部薄区域的拉伸和压缩弯曲。在本文中，提出了圆柱缺陷的简化参考应力。利用这些结果，新开发的pM（内部压力比和外部弯曲力矩比）图可以评估压力设备（如同时具有内部压力的局部薄区域的容器，管道和储罐）的塑性破坏状况， p，并提出了由于地震等引起的外部弯矩M。通过与参考文献获得的具有体积缺陷的圆柱体的FEA结果和大量实验结果进行比较，验证了pM线。当圆柱的外径/壁厚较大且材料的屈服比较小时，压力和压缩力矩变得明显。

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