Numerical study of Fourier-filtered rough surfaces

A numerical model of friction between rough surfaces

This paper describes a computational method to calculate the friction force between two rough surfaces. In the model used, friction results from forces developed during elastic deformation and shear resistance of adhesive junctions at the contact areas. Contacts occur between asperities and have arbitrary orientations with respect to the surfaces. The size and slope of each contact area depend ...

Experimental Study for Addition Rough Surfaces on a Vehicle Floor Body and Comparison of Aerodynamics Coefficient

پس از اختراع خودرو، بشر بزودی به رابطه میان مقاومت هوا و حرکت اتومبیل پی برد. به مرور زمان با بهبود عملکرد خودروها از جهات مختلف و بالارفتن قیمت سوخت، بهبود آیرودینامیکی نیز به مسأله‌ای اساسی تبدیل شد. پژوهشگران دریافتند که توجه به آیرودینامیک نه تنها برای دستیابی به سرعت‌های بالاتر، بلکه به منظور کاهش مصرف سوخت و ایجاد پایداری مناسب در خودرو، امری ضروری است. به همین دلیل تاکنون تحقیقات زیادی د...

An Improved Numerical Method for Scattering from Dielectric Rough Surfaces

The need for numerical methods in studying electromagnetic scattering from rough surfaces is well established. The most commonly used numerical method is the surface integral equation method and its solution by the method of moments (MoM). Conventional implementation of MoM requires O(N^3) operations, where N is the number of surface unknowns. When N is large, as frequently encountered in study...

Spectral Radiative Properties of Thin Films with Rough Surfaces Using Fourier-transform Infrared Spectrometry

iii ACKNOWLEDGMENTS First, I would like to thank my advisor, Dr. Zhuomin Zhang, for taking me on as a graduate research assistant and for providing valuable support and help throughout the course of my research. I thank him for his commitment and for always expecting my best. and support during my stay at Georgia Tech Lorraine. I also appreciate his willingness to serve on my thesis committee. ...

Modeling Rough Surfaces