Fracture failure analysis and structure improvement on thread joint of turbine shaft
Source abstract
Abstract
Abstract Macroscopic and microscopic analysis of the fracture of turbine shaft joint was carried out in this paper. A number of groups of tensile and impact tests have been done after fracture sampling, the stress-strain curve and impact toughness curves of fracture materials are obtained, and the mechanical properties of turbine shaft materials are further tested. The microscopic analysis shows that the fracture surface is mainly distributed with a lot of quasi-cleavages, indicating that the material of turbine shaft is mainly brittle. In addition, establish a full-structure finite element analysis model of three-dimensional of thread joint to fit the various load conditions in the borehole accurately. In order to improve its torsion, tension and bending resistance, this paper improves the conventional American Petroleum Institute standard thread and proposes a double-shoulder structure thread. It is also found that the maximum stress value of double-shoulder thread is lower than that before the improvement. Comprehensive analysis shows that fracture of turbine shaft joint caused by structural design and material defects.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Failure Analysis and Simulation · Engineering Structural Analysis Methods · Mechanical stress and fatigue analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. Theoretical and experimental research of bearing capacity and fatigue life for coiled tubing under internal pressure10.1016/j.engfailanal.2019.06.062 ↗
2. Production capacity and mining plan optimization of fault/fracture-controlled EGS model in Gonghe Basin
3. Arash Dahi Taleghani, Zhanghua Lian. Impact of the dogleg geometry on displacement efficiency during cementing; an integrated modelling approach10.1016/j.petrol.2018.10.019 ↗
4. Study on pressurecontrolled sliding sleeve of jet breaking for natural gas hydrate mining based on throttle pressure drop principle
5. Numerical Analysis of Mechanical Behavior of Buried Pipes in Subsidence Area Caused by Underground Mining10.1115/1.4042711 ↗
6. Fracture failure analysis and research on special taper thread of cardan shaft Shell of PDM10.1016/j.engfailanal.2017.12.007 ↗
7. Root cause analysis of rotary shouldered pin-box connection failure10.1016/j.engfailanal.2015.08.018 ↗
8. A comprehensive analysis on the longitudinal fracture in the tool joints of drill pipes
9. Fatigue resonant tests on drill collar rotary shouldered connections and critical thread root identification10.1016/j.engfailanal.2018.02.027 ↗
10. Failure analysis on fracture of S13Cr-110 tubing [J]10.1016/j.engfailanal.2018.03.004 ↗
11. Experimental determination of the fatigue life of modified threaded pipe couplings10.1016/j.proeng.2010.03.199 ↗
12. A computational approach for the fatigue design of threaded connections10.1016/j.ijfatigue.2010.11.006 ↗
13. Design and study of gas-tight premium threads for tubing and casing10.1016/j.petrol.2015.06.007 ↗
14. Determination of operating load limits for rotary shouldered connections with three-dimensional finite element analysis10.1016/j.petrol.2015.04.029 ↗
15. Effect of stress distribution on the tool joint failure of internal and external upset drill pipes10.1016/j.matdes.2013.05.073 ↗
16. Experimental study of mechanical properties and residual stresses of expandable tubulars with a thread joint10.1016/j.tws.2017.02.031 ↗
17. Failure analysis and solution studies on drill pipe thread gluing at the exit side of horizontal directional drilling [J]10.1016/j.engfailanal.2013.05.017 ↗
18. Contact stress analysis and calculation of stress concentration factors at the tool joint of a drill pipe10.1016/j.matdes.2009.02.022 ↗
19. The reliability evaluation of threaded connections in challenging drilling by three-dimensional finite element analysis
20. Failure analysis of drill pipe: A review10.1016/j.engfailanal.2015.10.012 ↗
21. Fretting fatigue on thread root of premium threaded connections10.1016/j.triboint.2016.10.021 ↗
22. Experimental Research on Stress Field Distribution of Oil Tubing Thread Connection during Make and Break Process10.1016/j.engfailanal.2003.10.007 ↗
23. Numerical and experimental distribution of stress fields for double shoulder tool joint10.1016/j.engfailanal.2011.06.003 ↗
24. Longitudinal crack failure analysis of box of S135 tool joint in ultra-deep well10.1016/j.engfailanal.2014.11.022 ↗
25. Selected cases of failure analysis and the regulatory agencies inBrazil. Part 2: Electric energy and oil10.1016/j.engfailanal.2019.02.006 ↗
26. Failure analysis on speed reducer shaft of sluice gate in nuclear power plant10.1016/j.engfailanal.2017.07.021 ↗
27. Fracture mechanics as a tool in failure analysis — Prospects and limitations10.1016/j.engfailanal.2015.07.001 ↗
28. Failure analysis of a hardened and tempered structural steel (42CrMo4) bar for automotive applications10.1016/j.engfailanal.2008.05.006 ↗
29. GB/T 222-2006 Permissible tolerances for chemical composition of steel products [S].
30. SY/T 5561-2008. Petroleum and natural gas industry standard of the People’s Republic of China [S]. Beijing: National Development and Reform Commission, 2008.
31. GB/T 228.1-2010 Metallic materials-Tesile testing-Part 1: Method of test at room temperature [S].
32. GB/T 229-2007 Metallic materials-Charpy pendulum impact test method [S].
33. American Petroleum Institute. Standard API RP 7G: Recommended Practice for Drill Stem Design and Operating Limits [M]. American Petroleum Institute, 1998.
34. GB/T 10561-2005 Steel-Determination of content of nonmetallic inclusions Micrographic method using standards diagrams[S].
35. Xucheng · 2003 · 572
36. GB/T 9253.1-1999 Threads on rotary shouldered connections for petroleum industry [S].