聚乙烯管道切口试验应力和变形分析  

Stress and Deformation Analysis of Polyethylene Pipe Incision Test

作　　者：韩守鹏 HAN Shou-peng(Shanghai Institute of Special Equipment Inspection and Technical Research,Shanghai 200062,China)

机构地区：[1]上海市特种设备监督检验技术研究院,上海200062

出　　处：《石油化工设备》2025年第1期9-12,共4页Petro-Chemical Equipment

基　　金：上海市特种设备监督检验技术研究科技项目(2022-05Y)。

摘　　要：对聚乙烯管道在1~4 mm切口深度下水压试验中的应力和变形分布进行数值模拟和分析。研究得到,聚乙烯管道应力强度和变形量随着切口深度的增加而升高,聚乙烯管道变形量较大的区域对应的应力强度相对较低。切口深度为1 mm时,管道内表面应力和变形分布较为均匀,没有明显的变化梯度;而在切口深度为2~4 mm时,管道内表面应力和变形分布已经出现明显的变化梯度。The stress and deformation distribution of the polyethylene pipeline in the hydraulic test under the incision depth of 1~4 mm were numerical simulated and analyzed.The results show that the stress strength and deformation of polyethylene pipe increase with the increase of incision depth.The stress intensity corresponding to the area with large deformation of polyethylene pipe is relatively low.When the incision depth is 1 mm,the stress and deformation distribution of the inner surface of the pipeline is relatively uniform,and there is no obvious change gradient.When the incision depth is 2~4 mm,the stress and deformation distribution ofthe inner surface ofthe pipeline have obvious change gradients.

关 键 词：聚乙烯管 应力分析 切口试验 

分 类 号：TQ050[化学工程]