基于弹塑性变形的轴向压入式管道接头有限元分析  

FE analysis on axial press-in-type pipe fitting based on elastoplastic deformation

作　　者：黎俊初[1] 陈宁[1] 董洪波[1] 严超华[1] 胡晓明[2] 王乾[2] 

机构地区：[1]南昌航空大学航空制造工程学院,江西南昌330063 [2]海洋石油工程股份有限公司,天津300451

出　　处：《塑性工程学报》2011年第3期80-83,90,共5页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(50964012)

摘　　要：设计了2 inch轴向压入式管道接头,利用管接头件的弹塑性变形进行管道间的连接。运用有限元方法对管接头的压接及抗拉过程进行数值模拟,分析管接头在压接过程中的密封原理,并进行了相应的压接与抗拉试验,结果表明,压接力与拉拔力和计算值较为吻合。通过二次设计,加强了管接头承受轴向载荷的能力,能够完全满足实际工程应用要求。Axial press-in-type pipe fitting of 2 inch in diameter was designed,using elastoplastic deformation of pipe fittings to connect one section of pipe with another.The interference fit and anti-tensile process of pipe fitting were simulated numerically with the use of elastoplastic FE method.The sealing principle of pipe fitting in the interference fit process was analyzed.The results show that the press-in force and the drowing force are identical with the calculation value of the simulation through secondary design.The capability of pipe fitting under axial load is enhanced enough to meet the requirements of the practical application.

关 键 词：轴向压入式管道接头 弹塑性变形 有限元分析 轴向载荷 

分 类 号：TG376.9[金属学及工艺—金属压力加工]