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化工学报  2015 

基于ASME大型球罐有限元分析

DOI: 10.11949/j.issn.0438-1157.20150412, PP. 165-170

Keywords: 大型球罐,长圆形结构,计算机模拟,数值分析,优化设计

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Abstract:

利用有限元分析软件ANSYS对4000m3大型球罐进行整体建模,对其在不同操作工况下进行应力分析。同时研究球罐模型的建模方法、各种载荷的施加方法,并采用ASME规范对球罐支柱和球壳连接处等多个部位进行应力评定,总结出完整的应力分析方法,从而为球罐的结构设计提供指导。经计算,组合工况,自重+设计压力+25%风载荷+地震载荷应力结果最大,球壳上最大应力点发生在支柱与球壳连接处的最高点。球罐的最大应力值发生在支撑和球壳的连接部位,说明支撑与球壳的连接处是薄弱点,设计时应给予关注,增加支柱与球壳连接长度能有效降低应力集中水平。

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