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锅炉异种钢组合受热面管热应力分析

Hongquan YANG,Pingyuan LIU,Liren LI

Dongli Gongcheng Xuebao/Journal of Chinese Society of Power Engineering（2014）

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Abstract
针对异种钢受热面管圈的热应力特点,采用线弹性小变形、线弹性大变形和弹塑性大变形等有限元方法对管圈的热膨胀应力进行了计算.将有限元应力分析结果应用于异种钢受热面管圈的强度和疲劳寿命评定,扩大了异种钢结构的应用范围.结果表明:弹塑性大变形应力分析方法获得的应力值更接近管圈的实际应力;工程应用结果表明,采用线弹性大变形应力的强度评定方法能够确保锅炉长期安全运行.
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Key words
Boiler,Elastic-plastic deformation,Finite element method,Large deformation,Reheater,Stress
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