Simulation Analysis of Bidirectional Fluid-Solid Coupling for Hydrodynamic Coupling

2015 ◽  
Vol 744-746 ◽  
pp. 1128-1132 ◽  
Author(s):  
Wen Xing Ma ◽  
Xiao Wen Shen ◽  
Xiu Quan Lu ◽  
Long Fei Ji
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Structural Design ◽  
Theoretical Basis ◽  
High Speed ◽  
Simulation Analysis ◽  
Turbine Blades ◽  
Great Power ◽  
Analysis Method ◽  
Hydrodynamic Coupling

In this paper, bi-directional fluid-solid coupling numerical analysis method was introduced into the structural design of hydrodynamic coupling, this method was adopted to simulate the impeller strength and analyze the dynamic characteristics of the turbine blades, as well as the influences of turbine blades deformation the inside flow filed of hydrodynamic coupling was discussed. The work provides a theoretical basis for the design of the hydrodynamic coupling with the great power and high speed.

Application of Experimental Modal Analysis Method in Researching of Mechanical Structure Dynamic Characteristics

2013 ◽  
Vol 694-697 ◽  
pp. 370-373
Author(s):  
Zhang Yu ◽  
Wen Zheng Cai
Keyword(s):  
Modal Analysis ◽  
Natural Frequency ◽  
Dynamic Characteristics ◽  
High Speed ◽  
Experimental Modal Analysis ◽  
Analysis Method ◽  
Mechanical Structure ◽  
Vibration Resistance ◽  
Structural Rigidity ◽  
Structure Dynamic

With the purpose of realizing the analysis of mechanical structure dynamic characteristics and inhibit vibration and noise, combined with the analysis of a certain type of high speed sewing machines vibration characteristics, we carry on the concrete experimental modal analysis, and compare the results of the experimental modal analysis with the results of spectrum analysis. The analysis results show that the second order natural frequency of the shell is close to two octaves under the normal working speed of sewing machine and it will lead to resonance. Enhancing the structural rigidity and the natural frequency under this modal to avoid resonance frequency is the key to improve vibration resistance of the structure.

Numerical Study of XCP Probe's Fluid Dynamic Characteristics

2011 ◽  
Vol 130-134 ◽  
pp. 1645-1649
Author(s):  
Ning Liu ◽  
Rui Zhang ◽  
Wen Yi Chen ◽  
Man Man Zhang
Keyword(s):  
Numerical Analysis ◽  
Drag Coefficient ◽  
Dynamic Characteristics ◽  
Numerical Study ◽  
Fluid Dynamic ◽  
Steady Motion ◽  
Experimental Results ◽  
Analysis Method ◽  
Test Parameters ◽  
Volume Method

Applied the finite volume method combining two-equations turbulence model,the influence of fluid dynamic characteristics on XCP probe under different factors be studied The fluid dynamic characteristics were researched under different influencing factors, such as falling speed, rotating rate,seawater density,etc. The drag coefficient under the different falling speeds and the limited velocity of submarine steady motion were obtained. Compared with the experimental results, the simulated results agree well with experimental results, the experiments have show the validity and feasibility of the numerical analysis method. These results will provide theory reference for selecting the reasonable rotating rate, analyzing stability and the movement rule of probe in the water, choosing suitable test parameters for XCP probe of different seawaters.

scholarly journals Finite element analysis for the lectotype of the large electronic truck scale structure

ACTA IMEKO ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 58
Author(s):  
Tieping Wei ◽  
Xingyang Zhou ◽  
Xiaoxiang Yang ◽  
Jinhui Yao
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structural Design ◽  
Theoretical Basis ◽  
Measurement Accuracy ◽  
Influence Factor ◽  
Simulation Analysis ◽  
The Finite Element Method ◽  
Element Analysis ◽  
Main Influence

The stiffness of truck scales is the main influence factor on its measurement accuracy. Three kinds of SCS-100T large electronic truck scales are different in size arrangement of U-beam. Based on the finite element method, the models of the truck scales were established. The stiffness and strength of the scales were compared on account of the analysis results. The results show that U-beam arrangement of the low at both ends but high in the middle structure for the truck scale not only can save material but also meet the requirement of stiffness. Simulation analysis provides the theoretical basis for the structural design of truck scales.

The Dynamic Characteristics Analysis of Liaocheng Guangyue Tower

2015 ◽  
Vol 744-746 ◽  
pp. 920-923
Author(s):  
Zhao Bo Meng ◽  
Yu Cao ◽  
Jie Jin
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Natural Vibration ◽  
Damping Ratio ◽  
Analysis Method ◽  
Vibration Period ◽  
Incentive Effect ◽  
First Order ◽  
Characteristics Analysis ◽  
Dynamic Characteristics Analysis

Taking Liaocheng Guangyue tower as an example, based on the on-site measurements, to determine its dynamic characteristics and provide a basis by numerical analysis method for determining traffic incentive effect on the ancient timber buildings. From the research, we can conclude that the first-order self-vibration frequency of Guangyue tower can be taken as 1.638Hz, the corresponding natural vibration period is 0.61s,the damping ratio is 1.098.

Structural Design and Simulation Analysis of Ejector Used in Automotive Power Steering Oil Discharge Equipment

2013 ◽  
Vol 274 ◽  
pp. 270-273
Author(s):  
Kai Cheng ◽  
Hai Lin Zou ◽  
Xiang Chao Kong ◽  
Jie Tang
Keyword(s):  
Pressure Distribution ◽  
Structural Design ◽  
Theoretical Basis ◽  
Velocity Vector ◽  
Simulation Analysis ◽  
Optimal Size ◽  
Cfd Model ◽  
Power Steering

The structure of ejector used in automotive power steering oil discharge equipment is designed in accordance with the theory of gas-liquid ejector.The two important parameters of the ejector are elected respectively to five values and then 25 ejector models are obtained by the permutations and combinations.The ejector’s CFD model is created by Fluent module of Ansys,then it is divided into a grid and analyzed. Analyse its pressure distribution and velocity vector, which provides the optimal size for the manufacture of the ejectors and a theoretical basis for experiment.

The Discussion of Numerical Analysis Method about Underwater Bridge Pier Structure

2011 ◽  
Vol 243-249 ◽  
pp. 672-676
Author(s):  
Jun Min Shen ◽  
Hui Liu ◽  
Fu Guo Guo
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Deep Water ◽  
Analytical Method ◽  
Complex Structure ◽  
Bridge Piers ◽  
Analysis Method ◽  
Numerical Analysis Method ◽  
Finite Element Software

In deep water, the dynamic characteristics of bridge piers will be changed. Using the numerical analysis method and the finite element software ANSYS, this paper analyzed the influence of the dynamic characteristics of the pier under different depth of water. At the same time, compared with the analytical method, we found that the results between two methods are consistent. But to the complex structure, the numerical analysis method would be superior.

The Study on the Basic Theory of Gold Seamless Pipe Welding Numerical Simulation

2013 ◽  
Vol 456 ◽  
pp. 467-470 ◽  
Author(s):  
Wen Chao Qin ◽  
Jian Ru Qi ◽  
Li Xin Wang ◽  
Wei Hong Ye
Keyword(s):  
Numerical Simulation ◽  
Theoretical Basis ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Field Analysis ◽  
Analysis Method ◽  
Seamless Pipe ◽  
Pipe Welding ◽  
Reasonable Choice ◽  
Gold Industry

Based on the theory of FEM, we have established a viable three-dimensional dynamic simulation of welding field analysis method, heat distribution with a double ellipse as a welding heat source, to establish a reasonable boundary conditions, which is a reasonable choice of welding numerical simulation provides a theoretical basis, laying the groundwork for welding numerical simulation analysis of the gold industry.

The Dynamic Analysis of High-Speed Energy Storage Flywheel Rotor System

2013 ◽  
Vol 770 ◽  
pp. 78-83
Author(s):  
Xiu Hua Zhang ◽  
Guang Xi Li ◽  
Long Nie
Keyword(s):  
Steady State ◽  
Energy Storage ◽  
High Speed ◽  
Transient Analysis ◽  
Critical Speed ◽  
Large Scale ◽  
Simulation Analysis ◽  
Rotor System ◽  
Analysis Method ◽  
Flywheel Rotor

This article aims at large-scale energy storage flywheel rotor system, obtaining the dynamic characteristics. Through theoretical analysis, and after doing a simulation analysis for a given flywheel rotor on the 0-20000 RPM, getting the flywheel rotor critical speed, the transient analysis and imbalance response. The system is in steady state at runtime according to the analysis results. Providing also certain theory basis for study of flywheel rotor system according to the analysis method .

Study on Fluid-Solid Coupling Analysis Method of Bridge Pier

2012 ◽  
Vol 594-597 ◽  
pp. 1504-1508
Author(s):  
Ji Xin Yang ◽  
Sheng Rong Zuo ◽  
Yi Feng Huang
Keyword(s):  
Numerical Analysis ◽  
Water Level ◽  
Dynamic Characteristics ◽  
Vibration Frequency ◽  
Natural Vibration ◽  
Frequency Effect ◽  
Natural Vibration Frequency ◽  
Strong Impact ◽  
Analysis Method ◽  
Coupling Analysis

This paper introduces the numerical analysis method to analyze the dynamic characteristics of pier in water. The method comes to realize by the software ANSYS. By the calculating of ANSYS, the 1~3 order frequency can be found regular when the pier in full of water and anhydrous conditions. Water has a strong impact on natural vibration frequency of structures, as the water level rises, the natural vibration frequency decreases gradually, the value of the reducing is about 13%. At the same time, the frequency decreases as an increasing rate. So the natural frequency effect which the water acting on the structure can not be ignored.

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