15 Result(s)
within
Chaofeng Li
Engineering
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Article
Open AccessInfluence of Non-uniform Parameter of Bolt Joint on Complexity of Frequency Characteristics of Cylindrical Shell
Bolt connection is one of the main fixing methods of cylindrical shell structures. A typical bolted connection model is considered as a tuned system. However, in the actual working conditions, due to the manuf...
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Article
Open AccessEffects of centrifugal stiffening and spin softening on nonlinear modal characteristics of cyclic blades with impact–friction coupling
This paper aims to interpret the coupling modal properties of cyclic blades under impact–friction interactions and their evolution mechanism versus operating points. Therefore, a coupling analytical model of c...
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Article
A YOLOv4 Model with FPN for Service Plates Detection
Intelligent service plates detection plays an important role in smart city. For example, intelligent service plates detection can realize more efficient and accurate self-service charges for restaurants, and s...
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Article
Fixed-time and preassigned-time stochastic synchronization of complex networks via quantized event-triggered strategy
This paper considers the fixed-time (FXT) and preassigned-time (PAT) stochastic synchronization of complex dynamic networks (CDN) based on the quantized event-triggered strategy. First, by applying some constr...
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Article
Research on nonlinear vibration control of laminated cylindrical shells with discontinuous piezoelectric layer
A model of laminated cylindrical shells with discontinuous piezoelectric layer is proposed. Based on the first-order shear nonlinear shell theory, the nonlinear vibration control of the piezoelectric laminated...
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Article
Open AccessComputation and investigation of mode characteristics in nonlinear system with tuned/mistuned contact interface
This study derived a novel computation algorithm for a mechanical system with multiple friction contact interfaces that is well-suited to the investigation of nonlinear mode characteristic of a coupling system...
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Chapter
Study on Big Data-Supported Clinical Oncology
Population health is the most important issue for social well-being, which is closely related to national economic development and social progress, and a great concern of governments around the world. There ar...
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Article
Sensitivity on the non-continuous supported laminated cylindrical shell to boundary conditions and lamination schemes
In this paper, the free vibration of laminated composited cylindrical shells with two kinds of non-continuous supported boundary condition are investigated. The artificial springs are used to simulate the arcs...
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Article
Geometrically nonlinear vibration of laminated composite cylindrical thin shells with non-continuous elastic boundary conditions
The geometrically nonlinear forced vibration response of non-continuous elastic-supported laminated composite thin cylindrical shells is investigated in this paper. Two kinds of non-continuous elastic supports...
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Article
Modeling and dynamic analysis of bolted joined cylindrical shell
Based on Sanders shell theory, modeling and dynamic analysis of bolted joined cylindrical shell were studied in this paper. When subjected to external excitations, contact state such as stick, slip and separat...
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Article
The effect of blade vibration on the nonlinear characteristics of rotor–bearing system supported by nonlinear suspension
The influence of blade vibration on the nonlinear characteristics of rotor–bearing system is non-ignorable in estimating system performance. The extensive studies simplify the rotor system as lumped mass point...
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Chapter and Conference Paper
Nonlinear Behavior Analysis Caused by Blade Tip Rubbing in a Rotor-Disk-Blade System
A revised blade-casing rubbing model is developed and verified by experiment, and then a finite element model of rotor-disk-blade system with blade tip rubbing between the blade and casing is established in AN...
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Article
Dynamic characteristics of multi-degrees of freedom system rotor-bearing system with coupling faults of rub-impact and crack
Extensive studies on rotor systems with single or coupled multiple faults have been carried out. However these studies are limited to single-span rotor systems. A finite element model for a complex rotor-beari...
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Article
Investigation on the stability of periodic motions of a flexible rotor-bearing system with two unbalanced disks
The stability of periodic motion of a rotor-bearing system with two unbalanced disks is analyzed based on a multi-degree of freedom (M-DOF) finite element model. Nonlinear effects of supporting oil-film and in...
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Article
Simulations and experimental investigation on motion stability of a flexible rotor-bearing system with a transverse crack
In the classical process for stability studies on the rotor-bearing system with crack faults, the simple discrete model is adopted for research on such problems, which neglect some needful dynamical influence ...
