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OALib Journal期刊
ISSN: 2333-9721
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含内双凹坑高温压力管道面内极限弯矩
DOI: 10.3969/j.issn.1671-7627.2013.02.018, PP. 91-94
Keywords: 高温管道,双凹坑,干涉,有限元,极限弯矩
Abstract:
采用有限元分析方法,基于蠕变应变准则,分析了含内双凹坑高温压力管道面内极限弯矩,确定凹坑发生干涉的距离。与凹坑干涉对极限内压的影响结果进行比较表明,干涉对极限内压的影响较对极限弯矩的影响更为显著。2%和5%蠕变应变准则得到的凹坑干涉结果表明,蠕变应变准则对结果影响不大,采用2%蠕变应变准则是可行的。
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