基于应力集中系数的压力容器气缸-气缸连接设计曲线

Murat Bozkurt, David Nash
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引用次数: 0

摘要

本研究讨论了在弹性和塑性区域对压力容器中气缸与气缸相交处进行参数分析的结果。此外,还讨论了有助于发展文献中经典解决方案的结果,即取决于应力集中系数(SCF)的设计曲线。首先,通过有限元分析计算了气缸-气缸连接的最大应力,并获得了 SCF 值。在这些计算中,作用于喷嘴中心的外部局部载荷和内部压力是载荷条件的主要变量。随后,介绍了不同的参数方法和加载条件,通过改变主要几何参数(如气缸和喷嘴半径及其厚度)来开发气缸/气缸连接的设计曲线。利用这些新曲线提出了一种新方法,从而使工业设计师能够计算出喷嘴的最大应力,而无需进行全面的有限元分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Stress concentration factor based design curves for cylinder-cylinder connections in pressure vessels
The results of the parametric analysis of the cylinder-cylinder intersections in pressure vessels, performed in both elastic and plastic regions, are discussed in this study. Besides, the outcomes that contribute to the development of classical solutions in the literature are addressed as design curves depending on stress concentration factors (SCF). To begin with, the maximum stresses for cylinder-cylinder connections were calculated by finite element analysis and SCF values were obtained. In these calculations, external local loads acting on the nozzle centre and internal pressure are the main variables for loading conditions. Following that, different parametric approaches and loading conditions are presented to develop design curves for cylinder/cylinder connections by changing the main geometric parameters, such as cylinder and nozzle radii, and their thicknesses. A new approach is presented using these new curves thus allowing industrial designers to calculate maximum nozzle stresses without the need to undertake a thorough finite element analysis.
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