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Rig Finite Element Analysis of the Derrick and Bearing Capacity Assessment Study

Author: SunMingXing
Tutor: OuYangLinZi
School: Lanzhou University of Technology
Course: Mechanical Design and Theory
Keywords: Derrick Static analysis Modal Analysis Transient Analysis Harmonic Response Analysis Carrying capacity
CLC: TE923.02
Type: Master's thesis
Year: 2010
Downloads: 158
Quote: 1
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Abstract


Derrick is an important part of one of the oil rig lifting equipment , its bar and more complicated force , frequently used in oilfield operations , its finite element analysis is an important part of the derrick design and application . This thesis focuses on the western oilfield applications wide JJ225/43-K - type mast mechanical analysis and safety assessment , based on the carrying capacity of the derrick has important guiding significance for the the derrick structure design , and the oilfield production safety . In this paper the the research status derrick finite element analysis , finite element analysis model through the establishment of JJ225/43-K derrick with ANSYS analysis software , and three typical operating conditions the derrick of stress and deformation analysis to identify maximum stress and deformation in various operating conditions , the derrick derrick weak links in static analysis . Then apply the kinetic analysis , modal analysis of the derrick the Block Lanzcos method , the first ten natural frequencies and mode shapes Figure calculated transient analysis and dynamic response , and on this basis , derrick moving deformation and stress changes under load , and derrick at the top , two-story station and Renzi Jia and other major sites at different times in response to changes in the law and vibration characteristics . Computational analysis of the above in order to find the weak link of the derrick and stress variation , the final order to analyze the carrying capacity study derrick , the paper did earlier the derrick simulation model , the model is applied to different load been derrick maximum stress found that the maximum stress load there is a certain linear relationship , according infer the ultimate bearing capacity of the derrick , the stress-strain field test data comparison , analysis of the theoretical study of the feasibility ; based and based on the strength and stability theory assessment theory , from two angles of the simulation analysis and experimental testing , evaluation of the carrying capacity of the derrick , derrick carrying capacity assessment analysis JJ225/43-K type has important theoretical significance and practical value .

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CLC: > Industrial Technology > Oil and gas industry > Oil machinery and equipment and automation > Drilling machinery equipment > Derrick and lifting equipment
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