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30 Result(s)
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ShuHong Liu
Engineering
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Article
Study the regularity of micro-texture parameters of bone milling tool surface for wettability improved and bone surface damage reduction
In total knee replacement surgery, the excessive cutting force generated when cutting bone tissue can cause bone cracks and stress concentration, leading to mechanical damage of bone tissue and surrounding tis...
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Article
Open AccessResearch on prestressed loading strut of cable supported portal frame
In this study, a novel type of loading strut device is presented, which is introduced in portal frame external prestressing reinforcement and used to constitute a cable-supported portal frame structural system...
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Chapter and Conference Paper
Big Data Analysis and Online Marketing of Organic Agricultural Products
Big data analysis is a symbolic technological revolution in the new era, and organic agriculture is the direction and goal of China’s agricultural revitalization. In China, online marketing of organic agricult...
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Article
Erratum to: Analytical Solutions of Cracks Emanating from an Elliptic Hole in an Infinite Plate under Tension
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Article
Numerical predictions and stability analysis of cavitating draft tube vortices at high head in a model Francis turbine
Draft tube vortex is one of the main causes of hydraulic instability in hydraulic reaction turbines, in particular Francis turbines. A method of cavitation calculations was proposed to predict the pressure flu...
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Article
Analytical solutions of cracks emanating from an elliptic hole in an infinite plate under tension
It is a common phenomenon that the cracks originating from a hole can cause structural damage in engineering. However, the fracture mechanics studies of hole edge crack problems are not sufficient. The problem...
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Article
Numerical analysis of flow in a Francis turbine on an equal critical cavitation coefficient line
Numerical simulation and model test were applied to study the cavitation flow in Francis turbines. The SST k-ω turbulence model and the mixture model were used to simulate the cavitating flow in the Francis tu...
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Article
Electro-elastic fields of piezoelectric materials with an elliptic hole under uniform internal shearing forces
The existing investigations on piezoelectric materials containing an elliptic hole mainly focus on remote uniform tensile loads. In order to have a better understanding of the fracture behavior of piezoelectri...
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Article
Three-dimensional flow simulation of transient power interruption process of a prototype pump-turbine at pump mode
The transient power failure process of a prototype pump-turbine was studied numerically by three-dimensional (3-D) simulations. Fluid coupling and dynamic mesh (DM) method were used to calculate the rotational...
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Book
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Chapter
Introduction
In this book, a hydraulic machine is referred to as a hydraulic turbine or a pump. Rotation of the turbine runner or the pump impeller is transmitted through a shaft supported on bearings to a generator or a m...
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Chapter
Numerical Model of Dynamics
A numerical model describes a scientific system in language of numbers. There are two kinds of models in mathematics: the lumped parameter model and the distributed parameter model. If the model is homogeneous...
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Chapter
Mechanical and Magnetic Excitations in Hydraulic Machinery
Mechanical analysis of hydraulic machinery includes two fields, structural dynamics and rotor dynamics. Structural dynamics is a subset that covers areas of structural behavior subjected to dynamic loading. Ro...
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Chapter
Prediction of Pressure Fluctuation by Turbulent Flow Analysis
Flows in pumps or hydraulic turbines are unsteady due to the system rotation, flow instabilities and mutual interactions between rotating and stationary parts. Flow instabilities are mostly viscous phenomena s...
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Chapter
Rotordynamic Simulation of Hydraulic Machinery
The shaft stability of generating and pum** units plays a crucial role on the units’ operation: It directly affects the safe operation and also influences the life of units.
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Chapter
Vibration-Based Condition Monitoring
Condition monitoring is the process of monitoring a condition parameter in machinery, so that a significant change is indicative of a develo** failure. The use of conditional monitoring allows maintenance to...
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Chapter
Foundamental of Mechanical Vibration
The purpose of this chapter is to provide a theoretical background of vibration in mechanical systems. The theories and mathematical structures presented in this chapter are classical and based on the book by ...
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Chapter
Elementary Concept of Rotordynamics
Rotordynamics is a branch of system dynamics dealing with mechanical devices in which at least one part, usually referred to as rotor, rotates with the angular momentum.
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Chapter
Vibration Induced by Hydraulic Excitation
Generally, hydraulic excitations that induce vibrations in hydraulic machinery can be categorized as follows:
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Chapter
Structural Dynamic Analysis in Hydraulic Machinery
The study of structural dynamics focuses on a structure’s behaviour when it is subjected to dynamic loading. Dynamic analysis can be used to research dynamic displacements, time-history, and modal analysis. A ...
