论文部分内容阅读
管道上的凹痕是影响管道疲劳寿命的重要因素之一。通过比较现场数据和试验数据,意图找出影响凹痕管道疲劳寿命的因素及各因素之间的关系。本文对此进行了总结,使用有限元软件对比进行了验证和研究,得出了影响凹痕管道疲劳寿命的主要因素有:凹痕的几何特征参数(包括凹痕深度、长度、肩部坡度、锐度、几何形状)、管道材料、管道几何形状、管道的运行压力、焊缝、凹痕与凹痕之间的影响,并提出了建议。
Dents on the pipe is one of the important factors that affect the fatigue life of the pipe. By comparing the field data with the experimental data, it is intended to find out the factors that affect the fatigue life of the pitted pipe and the relationship between the factors. In this paper, we summarize the results, and verify and study the finite element software. The main factors that affect the fatigue life of the pitted pipe are as follows: the geometric parameters of the pitted dent (including the depth, length, shoulder slope, Sharpness, geometric shape), the material of the pipe, the geometry of the pipe, the operating pressure of the pipe, the influence of the weld, dents and dents, and makes recommendations.