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Finite Element Analysis on Mechanical Property and Mechanic Characteristic of Expandable Tubular

Author: LiuFuPeng
Tutor: YangGanSheng
School: Chinese Geology University (Beijing)
Course: Geological Engineering
Keywords: expandable tubular technology expansion forming force FEM analysis
CLC: TE931
Type: Master's thesis
Year: 2009
Downloads: 195
Quote: 1
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Abstract


This paper is part of the contents of China Geological Survey Project "Deep Hole Expandable Tubular Technology (ETT) ". This paper mainly study in finite element analysis (FEA) of ETT.Based on elastic-plastic mechanical analysis of the pipe expansion, ANSYS FEM and 20 # steel pipe indoor experiment, the paper systematically does a study of the forming mechanism, and obtains a series of important conclusions and understanding : 1. It has compiled a simple EFA program of ETT by VC++ and ANSYS ANSYS comprises 3 FEM models of ETT. FEM simulation and experimental studies have shown that the establishment of the mechanical model is a scientific and rational, and the forming force formula is practical. 2. It has get some important conclusions about the relationship between tubular material, the the cone angle, friction coefficient, diameter of expansion cone and forming force, length, thickness, residual stress of the pipe. 3. There are some new conclusions about spinning ETT at home. 4. It is feasible to apply ETT to the non-oil-and-gas exploration.The main innovation in this paper is: 1. A high efficiency ETT FEA system is developed by utilizing VC++ and APDL, which is a secondary development language of ANSYS in this thesis. It can create and analysis the ETT automatically and intelligently. So it can reduce the ETT design load and advance efficiency. 2. The FEA of the ETT with 3 symmetrical spinning expansion tools was firstly instituted at home.

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