影响薄壁容器应力测定误差的因素分析  

Analysis of Factors Affecting Stress Measurement Errors in Thin-walled Containers

作　　者：周诗宇 黄御封 孙凤杰[1] 朱荣涛[1] 沈利民[1] ZHOU Shiyu;HUANG Yufeng;SUN Fengjie;ZHU Rongtao;SHEN Limin(School of Chemical Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学化工学院,江苏徐州221116

出　　处：《山东化工》2024年第21期148-151,156,共5页Shandong Chemical Industry

基　　金：中国矿业大学国家级一流本科课程培育项目(080206)。

摘　　要：对影响薄壁容器应力测定结果的因素进行分析得出以下结论:1)按薄膜理论计算的应力值较弹性理论公式计算得出的外壁应力值偏大,且K值越大,二者相差越大;2)由于加工减薄影响,球形封头理论计算应力时应以实测壁厚替代名义厚度;3)贴片角度偏差对球形封头实测结果没有影响,但对圆柱筒体经向应力误差影响较大;4)材料弹性模量与泊松比和实验压力对圆柱筒体经向应力测量结果影响较大。针对以上因素对特定装置参数进行了校正和调整,实验成功率显著提高。The experimental error of internal pressure vessel measurement was analyzed,and the following conclusions are drawn:1)The stress calculated according to the film theory is larger than the outer wall stress calculated by the elastic theory formula.The difference between them becomes larger with larger K.2)Measured wall thickness should be used to replace the nominal thickness in the theoretical calculation of spherical head stress.3)The patch angle deviation has no influence on the measured results of spherical head,but has a great influence on the meridional stress of the cylinder.4)The material elastic modulus,Poisson's ratio and experimental pressure have great influence on the measurement of meridional stress of cylindrical cylinder.In view of the above factors,the specific device parameters are corrected and adjusted,and the success rate of the experiment is significantly improved.

关 键 词：内压应力测定 实验误差 角度偏差 

分 类 号：TQ053.2[化学工程] TG115.222[金属学及工艺—物理冶金]