Mechanical analysis of deepwater drilling riser system based on multibody system dynamics

Liu, Xiuquan; Sun, Hexiang; Yu, Meng-Ru; Qiu, Na; Li, Yanwei; Liu, Fulai; Chen, Guo-Ming

doi:10.1007/s12182-020-00506-1

Cited by 33 publications

(6 citation statements)

References 32 publications

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“…The Multibody module is integrated into Simulink, providing a large number of components such as rigid bodies, hinges, constraints, sensors, etc., which can be used for mechanism kinematics, dynamics simulation and control algorithm verification, etc. And the 3D visualization component Mechanics Explore is integrated into Multibody, which can make the dynamic simulation results more intuitive [13][14] . The multibody dynamics model of the composite 6-UCU type marine stabilized platform system based on Multibody mainly includes system configuration, trajectory planning, kinematic inverse solution, stabilized platform-simulation platform and PID controller drive modules and kinematic and dynamics simulation result display modules, as shown in Figure 6.…”

Section: Simulink/multibody Based System Modelingmentioning

confidence: 99%

Modeling and simulation of six degrees of freedom marine stable platform

Zhang,

Lu,

Wang

et al. 2024

International Conference on Mechatronic Engineering and Artificial Intelligence (MEAI 2023)

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A kinematic model of the 6-UCU type parallel stabilized platform based on the closed vector method is established for the problem that it is difficult to install the motion measurement unit in the lower platform center of the parallel stabilized platform in practical engineering applications. The theoretical analysis of the kinematic inverse and positive solution problems was carried out, and the parametric models of the parallel stabilized platform and the wave simulation platform were established under the ADAMS environment using the virtual prototype technology, and the dynamic simulation experiments were conducted to obtain the kinematic simulation results and the driving force variation diagrams of the driven joints. Finally, the multi-body dynamics simulation model of the platform is built in Simulink/Multibody for dynamic simulation and compared with ADAMS simulation results. The simulation results show that the simulation model of the stable platform built by Simulink/Multibody is more accurate, which provides a more convenient platform for the theoretical analysis of the kinematics and dynamics of the stable platform and provides a theoretical basis for further research of the control algorithm.

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Section: Simulink/multibody Based System Modelingmentioning

confidence: 99%

Modeling and simulation of six degrees of freedom marine stable platform

Zhang,

Lu,

Wang

et al. 2024

International Conference on Mechatronic Engineering and Artificial Intelligence (MEAI 2023)

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“…The length of the selected X80 riser is L = 15,240 mm, the outer diameter is d = 534 mm, and the wall thickness is t = 25.4 mm. 30 In order to study the influence of the distribution of a corrosion pit on the service life of riser, the following three riser models with corrosion pit defects are established in this work. Figure 7A shows the riser model with one single ellipsoidal corrosion pit, with the depth of a = 5 mm and the width of 2c = 24 mm at the outer surface.…”

Section: Analysis Modelmentioning

confidence: 99%

A frequency‐dependent high‐cycle fatigue damage model and its application in crack nucleation of marine riser from corrosion pits

Yin¹,

Li²,

Longchi

et al. 2023

Fatigue Fract Eng Mat Struct

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Based on the continuum damage mechanics theory, a frequency-dependent high-cycle fatigue damage evolution model was established. According to the fatigue results of API X80 steel, the frequency-dependent damage evolution parameters were regressed. Using the available riser mechanical model, the user subroutine of high-cycle fatigue damage evolution was compiled, and the accelerating effect of corrosion pits on fatigue crack initiation of the marine riser was analyzed. The results show that a single corrosion pit at the surface can reduce crack nucleation life by more than 80%. In a double corrosion pits' case, the stress interference between pits significantly affects the crack nucleation. Circumferential double pits can produce a fatigue crack earlier than the single pit, but the effect of axial double pits is just the opposite. When the spacing reaches a certain distance, the stress interference disappears, and the crack nucleation life approaches that of a single pit case.

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“…They detailed the interaction between fracture and plastic collapse based on a bilinear fatigue model and failure criteria associated with crack propagation. Additionally, Liu Xiuquan [8] introduced fracture mechanics methods to establish a fatigue failure model for deep water drilling risers. Xiao Na [9] investigated the high-cycle fatigue behavior of vacuum-carburized 20Cr2Ni4 steel at three different depths of carburization layers through rotating bending fatigue tests.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Yield Strength Variation Law of Casing Materials under Alternating Thermal–Mechanical Coupling Loads

Lu,

Yang,

Wang

et al. 2024

Processes

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Unconventional oil and gas reservoirs, characterized by low porosity and permeability, often require multistage fracturing techniques for development. The high-pressure fracturing fluids with large volumes can easily cause alternating changes in both temperature and pressure within the casing. Using a theoretical model and field data from hydraulic fracturing operations, this paper calculated the alternating ranges of axial loads and temperatures in the reservoir section. Based on the calculation results, the temperature–load alternating coupling test of the P110 casing was carried out, and the tensile test was performed to analyze the yield strength variation law of the casing material. The results indicate that the yield strength, ultimate strength, and elastic modulus of casing materials are decreased under alternating thermal–mechanical coupling conditions. As the number of alternating cycles increases, there is an initial rapid decrease followed by a slower declining trend. Moreover, the tension–tension (T–T) cycles induce greater reductions in yield strength and ultimate strength than tension–compression (T–C) cycles. Meanwhile, under the same axial load condition, the higher the circulating temperature, the more significant the reduction in yield strength and ultimate strength. In essence, this is the result of the coupling effect of low-cycle fatigue and temperature aging. Finally, based on the experimental data, a yield strength prediction model of the P110 casing under the alternating thermal–mechanical coupling condition was established. The research results provide theoretical guidance for the safe design and material selection of a casing string under multistage volumetric fracturing conditions of shale gas exploration.

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Mechanical analysis of deepwater drilling riser system based on multibody system dynamics

Cited by 33 publications

References 32 publications

Modeling and simulation of six degrees of freedom marine stable platform

Modeling and simulation of six degrees of freedom marine stable platform

A frequency‐dependent high‐cycle fatigue damage model and its application in crack nucleation of marine riser from corrosion pits

Experimental Study on Yield Strength Variation Law of Casing Materials under Alternating Thermal–Mechanical Coupling Loads

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