Micro-Defects Test Simulation Analysis and Experiment Research under Alternating Electromagnetic Excitation

2013 ◽  
Vol 798-799 ◽  
pp. 452-455
Author(s):  
Xia Yu ◽  
Wei Ming Zhang ◽  
Zhong Chao Qiu ◽  
Cheng Feng Chen
Keyword(s):  
Simulation Analysis ◽  
Crack Depth ◽  
Simulation Software ◽  
Good Effect ◽  
Electromagnetic Simulation ◽  
Test Results ◽  
Current Field ◽  
Electromagnetic Excitation ◽  
Simulation Results ◽  
Alternating Magnetic Fields

Alternating current field Measurement is one of the important progresses about electromagnetic nondestructive testing in recent years. Alternating magnetic fields excitation testing model is established by using electromagnetic simulation software ANSOFT, a flat plate crack defects are simulated. By analyzing its principle, crack depth and the width change influence on test results, finally the simulation results are verified by the method of experiment. The experimental results are consistent with the simulation results. The results show that this differential probe has good effect on crack defects test.

scholarly journals Impact of Modeling Simplifications on Lightning Strike Simulation for Aeroengine

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Yi-fan Qian ◽  
Zhi-feng Ye ◽  
Hai-bo Zhang
Keyword(s):  
Simulation Analysis ◽  
Simulation Software ◽  
Simplified Model ◽  
Lightning Strike ◽  
Electromagnetic Simulation ◽  
Experimental Conditions ◽  
Turbofan Engine ◽  
Engine Model ◽  
Simulation Results ◽  
The Difference

With the development of electromagnetic simulation software and affordable hardware, it is allowed for us to complete simulations for EMC purposes. However, simulation demands will be immense when simulations for models with complex structures, especially aircraft components, have to be solved. Hence, it is meaningful to investigate how to minimize the computational demands. One of the solutions to reduce the simulation expense is the simplification for the simulated model. But the simplified model should be guaranteed to provide credible simulation results which do not deviate from the original model apparently. Generally, the difference between the simulation results and experimental data is estimated, or if the experimental conditions are not achieved, the comparison between the simplified model and the original one has to be analyzed, at least. This paper explores the electromagnetic simulation of a turbofan engine encountering lightning strike. With the simplifications of different components on the turbofan engine, the influences on induced currents of engine controller cables are simulated and analyzed based on the transmission-line matrix method. A combining method of components removal and geometric structure simplification is proposed to simplify the whole engine model. Simplified components include compressor, combustion chamber, turbine, and nozzle. The effects of different simplification methods are quantified, and the rationality of the simplified model is verified by simulation analysis.

Simulation on Probe-Fed Rectangular Patch Antenna with the Minkowski Fractal Structure

2014 ◽  
Vol 971-973 ◽  
pp. 1148-1151
Author(s):  
Ruo Yan Han ◽  
Wei He ◽  
Ping Lu ◽  
He Ling Cai ◽  
Jiao Hong
Keyword(s):  
Resonant Frequency ◽  
Patch Antenna ◽  
High Frequency ◽  
Fractal Structure ◽  
Simulation Software ◽  
Electromagnetic Simulation ◽  
Rectangular Patch ◽  
Simulation Results ◽  
Application Requirements ◽  
Minkowski Fractal

The probe-fed rectangular patch antenna with the Minkowski fractal structure which for 2.45GHz was simulated by using high frequency electromagnetic simulation software HFSS V11.The Simulation results showed that it was similar to side-fed square patch antenna with the Minkowski fractal structure. The resonant frequency decreased with fractal iteration, and the size of the antenna could be miniaturized. And antenna pattern unchanged with fractal iteration mostly, which meet the application requirements basically.

scholarly journals Experimental Study and Simulation Analysis on Electromagnetic Characteristics and Dynamic Response of a New Miniature Digital Valve

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Meisheng Yang ◽  
Junhui Zhang ◽  
Bing Xu
Keyword(s):  
Experimental Study ◽  
Dynamic Simulation ◽  
Dynamic Characteristics ◽  
Electromagnetic Force ◽  
Simulation Analysis ◽  
Electromagnetic Properties ◽  
Electromagnetic Simulation ◽  
Electromagnetic Structure ◽  
Electromagnetic Characteristics ◽  
Simulation Results

In order to get the better electromagnetic characteristics of the micro digital valve, the larger electromagnetic force should be obtained in the smaller electromagnetic structure. The electromagnetic force directly determines the electromagnetic properties of the miniature digital valve. The electromagnetic force test is studied in the paper. The results of electromagnetic simulation results are basically consistent with the experimental results. The simulation model is reliable and accurate. The dynamic simulation results show that the dynamic characteristics of the miniature digital valve meet the requirements of the digital hydraulic technology. Design of the new micro digital valve is reasonable.

scholarly journals The influence of climatic conditions on the efficiency of the solar system

2020 ◽  
Vol 167 ◽  
pp. 05002
Author(s):  
Viacheslav Shemelin ◽  
Tomas Matuska
Keyword(s):  
Solar System ◽  
Solar Collector ◽  
Simulation Analysis ◽  
Climatic Conditions ◽  
Simulation Software ◽  
Hot Water ◽  
Apartment Building ◽  
Time Step ◽  
Simulation Results ◽  
One Year

The simulation analysis of the solar hot water preparation system for an apartment building is presented. The analyses investigated the effect of climatic conditions on the efficiency of the solar system. To demonstrate the influence of climatic conditions, four building locations (Stockholm, Prague, Milan, and Barcelona), six different solar collectors, and six different design areas of solar collector field were used. The aim was to verify how the efficiency of the solar system varies depending on the climatic and design conditions. Moreover, the influence of year-to-year fluctuations of climatic conditions was also explored. The analysis has been provided by using TRNSYS simulation software over the period of one year using the time step of 2 minutes. The simulation results clearly showed that the efficiency of the SDHW system is dependent on the climatic conditions, especially on the air temperature. On the other hand, year-to-year weather fluctuations do not strongly affect the efficiency of the SDHW system.

Application of Matlab to write a Script for HFSS’s Eigenmode Solution of Circular Cavity

2013 ◽  
Vol 385-386 ◽  
pp. 1240-1243
Author(s):  
Ai Guo Ji ◽  
De Shui Liu
Keyword(s):  
Electromagnetic Field ◽  
Numerical Methods ◽  
Rapid Development ◽  
Simulation Software ◽  
Innovative Approach ◽  
Electromagnetic Simulation ◽  
Circular Cavity ◽  
Design Requirements ◽  
Simulation Results ◽  
Scripting Language

With the rapid development of modern electromagnetics, a lot of electromagnetic field numerical methods are maturing. 3D electromagnetic simulation software HFSS has two solutions including incentive solving and eigenmode solving. When solving the calculation of the structure of eigenmodes or resonant type can use eigenmode solver. Using matlab generate HFSS scripting language-based program to set eigenmode solution is a very convenient and very innovative approach. The program on a circular cavity modeling and eigenmode solution set simulation results meet the design requirements.

scholarly journals Simulation Analysis on Partial Discharge Signals Produced by Multiple Insulation Defects in GIS

2020 ◽  
Vol 165 ◽  
pp. 06040
Author(s):  
Yuxin Yun ◽  
Guangke Xu ◽  
Weiwei Zhang ◽  
Xing Li ◽  
Lingying Chen
Keyword(s):  
Electromagnetic Field ◽  
Simulation Analysis ◽  
Partial Discharge ◽  
Simulation Software ◽  
Impact Response ◽  
Current Signal ◽  
Linear Convolution ◽  
Simulation Results ◽  
Gas Insulated Substation ◽  
Linear Mixtures

In this paper, the simulation analysis on partial discharge (PD) signals produced by multiple insulation defects in gas insulated substation (GIS) has been researched by the simulation software of electromagnetic field (XFDTD). The theoretical analysis and simulation results show that the single partial discharge signal is the linear convolution of the partial discharge current signal and its corresponding impact response in GIS. The mixed partial discharge signals are the linear mixtures of every partial discharge signal.

Effect of Ambient Temperature Zinc Oxide Surge Arrester Condition Monitoring

2014 ◽  
Vol 554 ◽  
pp. 573-577 ◽  
Author(s):  
Zulkurnain Abdul-Maleka ◽  
Amir Hesam Khavari ◽  
Nabipour Afrouzi Hadi ◽  
Saeed Vahabi-Mashak
Keyword(s):  
Experimental Data ◽  
Zinc Oxide ◽  
Surface Temperature ◽  
Ambient Temperature ◽  
Simulation Analysis ◽  
Simulation Software ◽  
Surge Arresters ◽  
Simulation Results ◽  
Comsol Simulation ◽  
The Relationship

Various methods have been developed to monitor surge arrester condition and predict the probable interruption which can be caused by the failure of surge arresters. This paper aims to carry out experimental and simulation work to find the relationship between the aging level, arrester surface temperature and ambient temperature. COMSOL simulation software was used for the modeling of 120kV rated gapless ZnO surge arresters. It is observed from both the simulation analysis and experimental data that the leakage current and temperature increase as a consequence of an increase in the applied voltage across the arrester. The thermal profile of the ZnO surge arrester changes depending on the aging level and the ambient temperature. The surface temperature simulation results compare well with the experimental results, for the case of varying aging levels.

Simulation Analysis of Proportional Valve Controlled Cylinder Hydraulic System Based on AMESim

2013 ◽  
Vol 668 ◽  
pp. 420-425 ◽  
Author(s):  
Ning Xie ◽  
Xi Chen ◽  
Jin Jin Guo
Keyword(s):  
System Performance ◽  
Hydraulic System ◽  
Simulation Analysis ◽  
Dynamic Performance ◽  
Hydraulic Cylinder ◽  
Simulation Software ◽  
Proportional Valve ◽  
Position Accuracy ◽  
Simulation Results ◽  
Amesim Simulation

Focusing on the performance of proportional valve controlled cylinder, by using AMESim simulation software, dynamic performance of the system has been simulated. Starting by the control strategy, using Genetic Algorithm,the PID parameters which can affect the hydraulic cylinder position accuracy will be optimized. The simulation results show that the optimized parameters can improve system performance, and achieved excellent results.

Prediction Analysis of Electromagnetic Interference Based on Gray Prediction Theory

2010 ◽  
Vol 44-47 ◽  
pp. 3731-3735
Author(s):  
Hui Juan Zhang ◽  
Yan Ting Wang ◽  
Shi Tao Wang ◽  
Meng Wu
Keyword(s):  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Simulation Software ◽  
Electromagnetic Simulation ◽  
Test Results ◽  
Prediction Theory ◽  
Prediction Analysis ◽  
Electromagnetic Transient ◽  
Gray Prediction ◽  
Electromagnetic Transient Simulation

The paper introduces a new method for prediction of electromagnetic compatibility in the power system, and use the Electromagnetic simulation software ATP. By comparing the actual test results to the simulation results, it is proved that electromagnetic transient simulation is reliable and effective. It also introduces the Gray prediction theory to predict the next Electromagnetic Interference (EMI) of the substation. It is high practical to research and analyze the substation electromagnetic compatibility, and feasible to use the Gray prediction theory with multivariable for the model EMI prediction analysis.

Dynamics Simulation Analysis of Flexible Multibody of Parallel Robot

2007 ◽  
Vol 10-12 ◽  
pp. 647-651 ◽  
Author(s):  
C.X. Zhu ◽  
Yong Xian Liu ◽  
Guang Qi Cai ◽  
L.D. Zhu
Keyword(s):  
Simulation Analysis ◽  
Parallel Robot ◽  
Rigid Bodies ◽  
Simulation Software ◽  
Dynamics Simulation ◽  
Element Analysis ◽  
Flexible Multibody ◽  
Simulation Results ◽  
Set Up ◽  
Parallel Machine Tool

Take a kind of 3-TPT parallel robot as an example, the model of flexible multibody of parallel machine tool is built by using multibody dynamics simulation software ADAMS and finite element analysis software ANSYS. And dynamics equation of flexible body in spatial is also set up, after that the dynamics simulation is carried out. Then the simulation results of rigid bodies are compared with flexible ones, and the results show that the forces applied on flexible bodies appear high nonlinear, so the simulation results of flexible multibody system are more authentic, nicety and can reflect actual dynamics characteristic of parallel robot.

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