基于不同材料模型的膨胀管有限元分析  

Numerical Simulation of Solid Expandable Tubular Based on ABAQUS

作　　者：王全宾[1] 高昆 强琳[3] 沈泽俊[1] 郭慧娟[1] 郝忠献[1] 朱世佳[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油西部钻探工程有限公司,乌鲁木齐816499 [3]中国地质大学(北京),北京100083

出　　处：《石油矿场机械》2016年第2期54-57,共4页Oil Field Equipment

摘　　要：为了分析不同材料模型对膨胀管膨胀性能的影响,通过ABAQUS软件建立有限元模型,对几种规格的膨胀管进行模拟,分析膨胀管胀后径向和轴向变形、膨胀力以及环向残余应力的变化。结果表明,不同膨胀管胀后径向变薄率与轴向缩短率变化很小;随着壁厚的增加,不同材料模型的膨胀力和环向残余应力都显著增加;理想弹塑性模型与多线性等向强化模型的数据相差较大;线性强化模型与多线性等向强化模型的数据之间存在一定的规律,可以用来替代多线性等向强化模型。In this paper,an expansion performance simulation on the different materials and sizes are made using the finite element method with ABAQUS software.The radial and axial deformation,the expansion force and circumferential residual stress are analyzed after expansion.The results show that there is little difference between the change rate of radial thickness and the change of axial length after expansion.With the increasing of the pipe thickness,the expansion force and the circumferential residual stress of different material models increase significantly.The result of the ideal elastic model is relatively larger than the multi-linear isotropic hardening model.The performance of the linear hardening model has the same patterns with the multi-linear isotropic hardening model,so in the simulation circumstance,the linear hardening model can replace the multi-linear isotropic hardening model.

关 键 词：膨胀管 残余应力 膨胀力 有限元 数值模拟 

分 类 号：TE973[石油与天然气工程—石油机械设备]