管道表面椭圆裂纹的断裂力学有限元分析  

Fracture Mechanics of Elliptical Crack on Pipe Surface With Finite Element Analysis

作　　者：邵菁[1] 张德琦[1] 付路路 孙海霞 

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001 [2]山东华鲁恒升化工股份公司,山东德州253024

出　　处：《当代化工》2015年第8期1972-1973,1976,共3页Contemporary Chemical Industry

摘　　要：针对小裂纹断裂力学的基本概念,运用ANSYS workbench15.0有限元软件建立了压力管道及其裂纹的三维实体模型,并对其进行了有限元网格划分,最后对小裂纹进行了断裂力学计算,得出了裂纹的KⅠ强度因子、KⅡ强度因子、KⅢ强度因子和J积分,定量的分析了裂纹尖端区域的应力场强弱程度,为压力管道裂纹的研究提供了定的数据支持。Based on the basic concepts of fracture mechanics for small cracks, a three-dimensional solid model of pressure pipes and cracks was established with the finite element software ANSYS workbench lS.0, and finite element meshing was carried out, and finally mechanics calculation for the small cracks was conducted to obtain K1intensity factor, K11 intensity factor, K11 intensity factors and J integral, and stress field strength of the crack tip region was quantitatively analyzed, which could provide data support for piping crack research.

关 键 词：压力管道 裂纹 断裂力学 有限元 

分 类 号：TE832[石油与天然气工程—油气储运工程]