Numerical Simulation and Safety Assessment for Pressure Vessel Dished Closure Head Welded Structure
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摘要: 采用埋弧焊焊接制备SA-240M 304不锈钢碟形封头,建立简易有限元模型,采用刚体面偏置约束模拟碟形封头在工况条件下的应力场,并对危险区域的Mises等效应力进行计算和安全评定。结果表明:有限元模拟得到碟形封头长圆孔右侧圆弧中间区域的Mises等效应力最大,为危险区域,与由实测应变计算得到应力的相对误差仅为4.7%,验证模型准确;对危险区域沿应力分类线的法向应力进行等效线性化处理后得到一次薄膜应力、一次弯曲应力、峰值应力、二次弯曲应力分别为135.19,3.54,0.774,42.83 MPa,根据ASME VIII-2评定为安全。Abstract: The SA-240M 304 stainless steel dished closure head was manufactured by submerged arc welding. A simple finite element model was established to simulate the Mises equivalent stress field of dished closure head under rigid bias constraint working condition. The results show that the Mises equivalent stress in the middle of the circular circle on the right side of the elongated hole of the dish closure head was the maximum, which was the dangerous area. The relative error between simulation value and the stress calculated from the measured strain was only 4.7%, which verified the accuracy of the model. After equivalent linearization of the normal stress along the stress classification line in the dangerous area, the primary film stress, primary bending stress, peak stress and secondary bending stress were obtained, which were 135.19, 3.54, 0.774, 42.83 MPa, respectively, and were rated as safe according to ASME VIII-2.
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Keywords:
- pressure vessel /
- dished closure head /
- stress linearization /
- membrane stress /
- stress assessment
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[1] 沈鋆.ASME压力容器分析设计[M].上海:华东理工大学出版社. 2014. SHEN Y.Analysis and design of ASME pressure vessel[M].Shanghai:East China University of Science and Technology Press. 2014. [2] 戴光.压力容器安全工程[M].北京:中国石化出版社. 2010. DAI G.Safety engineering of pressure vessel[M].Beijing:China Petrochemical Press. 2010. [3] 陈沙古. 高原. 吴智睿. 等.大厚度环肋圆柱壳结构应力特性研究[J].舰船科学技术. 2023. 45(9):19-23. CHEN S G. GAO Y. WU Z R. et al.Research on stress property of ring-stiffened cylindrical shell with large-thickness[J].Ship Science and Technology. 2023. 45(9):19-23.
[4] 黄勋.压力容器应力分类分析设计方法改进研究[D].杭州:浙江理工大学. 2017. HUANG X.Research on modification of stress categorization method in design by analysis of pressure vessel design[D].Hangzhou:Zhejiang Sci-Tech University. 2017. [5] 曾凡小.矩形压力蒸汽灭菌器定期检验中的强度(应力)校核[J].特种设备安全技术. 2023(2):17-19. ZENG F X.Strength (stress) check in periodic inspection of rectangular pressure steam sterilizer[J].Safety Technology of Special Equipment. 2023(2):17-19.
[6] MA L. WANG Z J.The effects of through-thickness shear stress on the formability of sheet metal:A review[J].Journal of Manufacturing Processes. 2021. 71:269-289.
[7] JIANG X R. MIAO K S. WU H. et al.Tensile behavior of a bi-layered bronze/steel sheet:Synergetic effects of microstructure and residual stress[J].Materials Characterization. 2023. 196:112568.
[8] 王战辉. 马向荣. 范晓勇. 等.压力容器球壳不连续区域应力分析和强度评定[J].能源化工. 2019. 40(3):64-67. WANG Z H. MA X R. FAN X Y. et al.Stress analysis and strength evaluation of discontinuous zone of pressure vessel spherical shells[J].Energy Chemical Industry. 2019. 40(3):64-67.
[9] LI H J. HUANG X. YANG P. et al.A new pressure vessel design by analysis method avoiding stress categorization[J].International Journal of Pressure Vessels and Piping. 2017(152):38-45.
[10] WU J X. XIONG D J. LI X S. et al.Investigation on residual stress in rotational parts formed through incremental sheet forming:A novel evaluation method[J].International Journal of Lightweight Materials and Manufacture. 2022. 5(1):84-90.
[11] 法尔·贾瓦德.ASME压力容器设计指南[M]. 郑津洋. 徐平. 方晓斌. 等译. 北京:化学工业出版社. 2002. FARR J R. ASME pressure vessel design guideliness[M]. ZHENF J Y. XU P. FANG X B. et al. transl. Beijing: Chemical Industry Press. 2002.
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