Research on the dynamic behavior of flexible drilling tools in ultrashort-radius radial horizontal wells [PDF]
Scientific ReportsA flexible drilling tool is a special drilling tool for ultrashort-radius radial horizontal wells. This tool is composed of many parts and has the characteristics of a multibody system.
Zhiqiang Lin +4 more
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Multibody Systems with Flexible Elements [PDF]
Symmetry, 2021 The formalism of multibody systems offers a means of computer-assisted algorithmic analysis and a means of simulating and optimizing an arbitrary movement of a possible high number of elastic bodies in the connection [...]
Marin Marin +2 more
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Determining the State of a Nonlinear Flexible Multibody System Using an Unscented Kalman Filter
IEEE Access, 2022 This paper describes an estimator incorporating the Unscented Kalman Filter (UKF) technique and multibody system dynamics, to determine the state of the flexible multibody applications. The dynamic equation of the flexible mechanism is formed using a set
Manouchehr Mohammadi +4 more
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Mathematics, 2022 In order to study the influence of compliance parts on spatial multibody systems, a rigid-flexible coupling dynamic equation of a spatial crank-slider mechanism is established based on the finite element method.
Xiaoyu Wang +5 more
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Multibody System Discrete Time Transfer Matrix Method for Nonlinear Shear Dynamic analysis of Immersed Tunnels [PDF]
E3S Web of Conferences, 2021 Shear seismic response analysis is critical for seismic design of immersed tunnels. According to the structural characters of immersed tunnels and shear dynamic response of their joints, a multibody dynamic model consisting of multi-rigid body, shear ...
Shen Zhongyuan, Bai Xue
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Applied Sciences, 2021 The use of flexible multibody simulation has increased significantly over recent years due to the increasingly lightweight nature of mechanical systems.
Roberto Belotti +3 more
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A Novel Disturbance-Free-Payload Satellite Design for High-Precision Collaborative Observation
Aerospace, 2023 High-precision collaborative observation is urgently needed due to the increasing demands of space science missions. Based on a conventional DFP (disturbance-free-payload) configuration, this paper presents a novel DFP that has great potential to deal ...
Yifan Deng +4 more
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A symbolic framework to obtain mid-fidelity models of flexible multibody systems with application to horizontal-axis wind turbines [PDF]
Wind Energy Science, 2022 The article presents a symbolic framework (also called computer algebra program) that is used to obtain, in symbolic mathematical form, the linear and nonlinear equations of motion of a mid-fidelity multibody system including rigid and flexible bodies ...
E. Branlard, J. Geisler
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Multibody Models of the Thoracolumbar Spine: A Review on Applications, Limitations, and Challenges
Bioengineering, 2023 Numerical models of the musculoskeletal system as investigative tools are an integral part of biomechanical and clinical research. While finite element modeling is primarily suitable for the examination of deformation states and internal stresses in ...
Tanja Lerchl +5 more
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Computational Modelling of the Rail Vehicle Multibody System Including Flexible Bodies
Communications, 2015 Tools for computer simulations are widely used in the field of a rail vehicle design. These means of virtual reality allow to perform static analyses of rail vehicle parts and dynamic analyses of a rail vehicle multibody system.
Jan Dizo +2 more
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