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首页> 外文会议>ASME Pressure Vessels and Piping conference >STRESS ANALYSIS OF PIPE SUPPORT ATTACHMENTS: A COMPARISON OF ANALYTICAL METHODS AND FINITE ELEMENT ANALYSIS FOR CIRCULAR AND NON-CIRCULAR ATTACHMENTS
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STRESS ANALYSIS OF PIPE SUPPORT ATTACHMENTS: A COMPARISON OF ANALYTICAL METHODS AND FINITE ELEMENT ANALYSIS FOR CIRCULAR AND NON-CIRCULAR ATTACHMENTS

机译：管道支撑装置的应力分析：圆形和非圆形装置的分析方法与有限元分析的比较

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摘要

Despite the availability of special purpose FE codes with post processing facilities as per rales of ASME SEC Ⅷ Division 2, use of simple analytical methods like ring loading around a circumference or more complex methods like Welding Research council bulletins 107 and 297, will continue to be used in the industry for a significant period of time for stress analysis of pipe support attachments. The reasons are few: not all engineering companies have such custom made FE codes, lack of trained personnel to work with general purpose FE codes, ease of implementation of the available methods and their successful design history, cost and time issues with FE analysis etc. In this paper these available methods will be reviewed based on their theoretical background, their range of applicability w.r.t the typical design parameters and their comparison with FE analysis. More recent analytical methods based on mathematically accurate space curves of intersections for circular attachments will also be discussed. This study will include both circular as well as non-circular attachments. This paper will highlight the strengths and weaknesses of the conventionally used methods especially with respect to their mathematical limitations to make an analyst aware of the potential over conservatism and under conservatism of these analytical methods. Finite element analysis models will be discussed in detail specifically in relation to elements used, element parameters, boundary conditions and post processing.
机译：尽管按照ASME SECⅧDivision 2的规定，具有特殊用途的FE代码和后处理设施，仍将继续使用简单的分析方法（例如，沿圆周加载环）或更复杂的方法（例如，Welding Research Council公告107和297）。在行业中使用了很长时间，用于分析管道支撑附件的应力。原因很少：并非所有工程公司都具有这种定制的FE代码，缺乏受过训练的使用通用FE代码的人员，易于实施现有方法及其成功的设计历史，FE分析的成本和时间问题等。在本文中，将根据其理论背景，其在典型设计参数下的适用范围以及与有限元分析的比较，对这些可用方法进行综述。还将讨论基于数学上精确的圆形附件相交空间曲线的最新分析方法。这项研究将包括圆形和非圆形附件。本文将重点介绍常规方法的优缺点，尤其是在数学上的局限性方面，以使分析人员了解这些分析方法在保守性和保守性方面的潜力。有限元分析模型将专门针对所用元素，元素参数，边界条件和后处理进行详细讨论。

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