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Evaluation of the Capacitance and Charge Distribution for Conducting Bodies by Circuit Modelling

Circuits and Systems 2016年第4期7卷 280-291页

作者： Dhamodaran Muneeswaran Dhanasekaran Raghavan Department of Electronics and Communication Engineering Syed Ammal Engineering College Ramanathapuram India Department of Electrical and Electronics Engineering Syed Ammal Engineering College Ramanathapuram India

This paper presents a numerical analysis for computation of free space capacitance of different arbitrarily shaped conducting bodies based on the finite element method with triangular subsection modeling. Evaluation of capacitance of different arbitrary shapes is important for the electrostatic analysis. Capacitance computation is an important step in the prediction of electrostatic discharge which causes electromagnetic interference. We specifically illustrated capacitance computation of electrostatic models like unit cube, rectangular plate, triangular plate, T-shaped plate, sphere and two touching spheres. Numerical data on the capacitance of conducting objects are presented. The results are compared with other available results in the literature. We used the COMSOL Multiphysics software for the simulation. The models are designed in three-dimensional form using electrostatic environment and can be applied to any spacecraft circuit modeling design. The findings of this study show that the finite element method is a more accurate method and can be applied to any circuit modeling design.

关键词： Capacitance Spacecraft Circuit Modeling electrostatic analysis electrostatic Discharge Finite Element Method

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Time Dependence of Piezoelectric d33 Coefficient of Cellular Piezoelectret Polypropylene Film:Finite Element Modeling

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2011年全国压电和声波理论及器件应用研讨会

作者： Liangliang Fan,Yongping Wan~* and Zheng Zhong School of Aerospace Engineering and Applied Mechanics,Tongji University,200092,Shanghai,P.R.China

Voided charged polymer film,also called cellular piezoelectret,shows piezoelectric-like response macroscopically. The piezoelectric d coefficient of cellular piezoelectret is much pronounced in the film thickness direction,and can be as large as that of Lead Zirconate Titanate *** with the flexibility and the low cost of fabrication,

关键词： Cellular piezoelectret electrostatic analysis Piezoelectric effect Viscoelastic

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