B.V.Bhoomaraddi College of Engineerring & Technology, Hubli, Karnataka, India
The world is getting digitalized, demands for new and emerging technologies have reached its peak, and customer demands have taken a U-turn. To cope with such unique requirements many systems and system devices are into the market and one of such enhancing technology is MEMS. MEMS are systems of small size, light weight, enhanced performance and reliability finding widest of applications in ...
K. M. V. Swamy, B. G. Sheeparamatti, G. R. Prakash 
Department of Electronics and Communication, Basaveshwara Engineering College, Bagalkot, Karnataka, India
This study is performed to know which central plate geometry is best suited for electrostatically actuated switch. The simulation is carried out in COMSOL Multiphysics, where user is free to model the geometry without depth knowledge about geometrical dependency of electrostatic. The study of the centrally suspended geometrical models such as circle, square and rectangle suspended by two short ...
Simulation and Analysis of Two Fans Air Speed Match Design in Off-Road Mine Tract Generator Using COMSOL
Y. Shen, D. Wu
Beijing University of Science & Technology, Beijing, China
This paper describes a model of self-ventilated generator cooling on a 170 tons off-road mine dump truck. Considering the space restrictions of mine dump truck, the cooling systems for the generator and the in-wheel motors of the rear axle share one air inlet duct. With the action of generator fan and rear duct fan, cooling air from the inlet duct will be divided into two parts to cool the ...
Solving the Inverse Problem of Resonant Ultrasound Spectroscopy on Dumbbell-shaped Compression Samples Using COMSOL Multiphysics®
M. C. Golt
U.S. Army Research Laboratory*, Aberdeen Proving Ground, MD, USA
*Contracted through Dynamic Science, Inc.
The dumbbell geometry is an ideal shape for testing the compressive strength of advanced ceramic materials. This paper details the combined use of COMSOL Multiphysics® and LiveLink™ for MATLAB® for determining the elastic properties of dumbbell-shaped samples by measuring their acoustic resonance frequencies. Degenerate bending modes which are sensitive to inhomogeneities or machining ...
T. Wu, G. Escamez, C. Lorin, P. J. Masson
University of Houston, Houston, TX, USA
Because of their very high specific torque, fully superconducting rotating machines are considered as enabling technology for future turbo-electric propulsion for transportation aircraft. NASA is funding the development of a high fidelity fully superconducting machine sizing tool able to generate optimized designs based on thrust requirements and design constraints. Several mechanical challenges ...
E. Isaza, E. Salazar, L. Florez
Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia
The consequences of hip fracture and femoral fracture are widely known. The mechanical strength of the femur varies in every person, but it is possible to predict the mechanical resistance with parameters like density, dimensions and mineral content. This paper uses different models and empirical studies to determine the mechanical properties of the human femur, developing isotropic and ...
Scale-up Design of Ultrasound Irradiator for Advanced Oxidation Process (AOP) Using COMSOL Multiphysics® Simulation
The Ohio State University, Columbus, OH, USA
Ultrasound is a promising green technology for the advanced oxidation process (AOP) since it adds no chemicals to the treated water. In this paper, COMSOL Multiphysics® was used as a tool to design and characterize an ultrasound irradiator with multi-stepped configuration, which aims to overcome disadvantages of typical irradiators and to enhance contaminant removal in large-scale water ...
B. Liu, T. C. Zhu
Department of Radiation Oncology, School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
Introduction: Deformable image registration is a form of medical image processing that can fuse images acquired by different modalities, and can provide insights into the development of phenomenon and variation in normal anatomical structure over time. Prior to post-operative pleural photodynamic therapy (PDT) performed at the University of Pennsylvania, a series of computed tomography (CT) scans ...
Modeling the Effect of Porosity on the Elastic Properties of Synthetic Graphite Using CT Scans and the Finite Element Method
G. Sowa, R. Paul, R. Smith
GrafTech International Inc., Parma, OH, USA
Predicting physical properties and performance of carbon and graphite materials based on the microstructure of the finished material continues to be a very challenging endeavor, like it has for many decades. However, recent advancements in three-dimensional measurement techniques using X-ray computed tomography (CT) combined with analysis breakthroughs using Simpleware’s ScanIP™ software are ...
Studying the Sensitivity of the Wrinkling Process to Mesh Imperfections Using COMSOL Multiphysics® and LiveLink™ for MATLAB®
S. K. Saha, M. L. Culpepper
Massachusetts Institute of Technology, Cambridge, MA, USA
Introduction: Wrinkles are formed on a thin film as a result of buckling-based instabilities and the mechanism is similar to Euler buckling of beams under compressive loads (Figure 1). Wrinkling of thin films can be used as an inexpensive fabrication technique for generating micro and nano scale periodic patterns. In the absence of analytical models, finite element techniques are used for ...