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Your search keyword '"WANG Nan"' showing total 109 results
Start Over Author "WANG Nan" Journal advanced materials research
109 results on '"WANG Nan"'

1. Characteristics Simulation of Ultra-High Frequency Electromagnetic Wave Excited by Equivalent Partical Discharge Mathematical Model in GIS

Author

Fu Qiang Zhao, Guang Ke Xu, Zhen Hua Zhu, Wang Nan, and Weiwei Zhang

Subjects
Engineering, business.industry, Acoustics, Gaussian, General Engineering, Finite-difference time-domain method, Insulator (electricity), Electromagnetic radiation, symbols.namesake, Ultra high frequency, Frequency domain, Excited state, Electronic engineering, symbols, Time domain, business
Abstract

UHF electromagnetic waves radiated by PD in GIS can range from several hundreds of MHz to several GHz. FDTD method is usually used to simulate the characteristics of the UHF electromagnetic waves. Compared with the traditional ideal Gaussian pulses in simulation, one equivalent PD mathematical model based on the actual measure PD sources was considered to simulate the propagation characteristics. Time domain and frequency domain spectrum of signals excited by the two PD sources were studied to analyze the propagation characteristics. It can draw the conclusions that each insulator detect leads to each electromagnetic and its time domain and frequency domain spectrum. So it is recommended to use equivalent PD mathematical model to simulator the propagation characteristics.

Published
2014

2. Numerical Simulation of Marine Recycled Concrete Specimen Based on ABAQUS

Author

Xia Li, Wen Bai Liu, and Wang Nan Chen

Subjects
Materials science, Computer simulation, business.industry, General Engineering, Vacuum pumping, Uniaxial compression, Structural engineering, Cracking, Erosion, Seawater, Geotechnical engineering, Cube, Dispersion (water waves), business
Abstract

Based on ABAQUS, this article builds up a dispersion cracking model and carries out the numerical simulation of the influence of sea water erosion depth and intension upon marine recycled concrete specimen. Compared with stress-strain curve from the experiment, it can be easily found that the experimental results match well with that of simulation through the numerical simulation of uniaxial compression on average concrete, recycled concrete corroded by seawater and the same concrete after vacuum pumping, which shows two kinds of curves stay close to each other. From the results of the simulation, strain develops from the edges to the middle of the cube until it runs through the whole section, which basically corresponds with the outcome observed in the experiment.

Published
2012

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