Estimativa do Fluxo de Calor em uma Ferramenta de Corte Durante um Processo de Usinagem com o Uso do Software COMSOL Multiphysics® e de Técnicas de Problemas Inversos - new
R. F. Brito, S. R. de Carvalho, S. M. M. de L. e Silva
Federal University of Itajubá - UNIFEI, Itabira, Minas Gerais, Brasil
Federal University of Uberlândia - UFU, Uberlândia, Minas Gerais, Brasil
This work proposes the use of inverse problem techniques in connection with COMSOL to estimate the heat flux and the temperature field on a turning cutting tool in transient regime. The main purpose of the present work is to present the improvements performed in relation to the authors’ previous work to develop the complex geometry of a machining process. Specification function, which is an ...
K. Govardhan , T. Pedanekar , P. Vashishtha ,
 VIT University, Vellore, Tamil Nadu, India
A comparative study is done using optimized single axis accelerometer and dual axis and double gimbal accelerometers are designed with different cantilever beam types i.e. perforated, non perforated, spring type and cross spring type. The models are simulated to find the most sensitive model.
T. J. Berger ,
 Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, NY, USA
The XENON Dark Matter Experiment utilizes ultra-pure xenon (Xe) as a target for particle interaction in the effort to detect dark matter particles. To measure the purity of Xe, a gas purity monitor (GPM) is being developed which drifts electrons through Xe gas to detect impurities that contribute to charge attenuation. An axially-symmetric model is used to simulate the electric field generated ...
Multiphysics Simulation of Ion Concentration Polarization Induced by Nanoporous Membranes in Dual Channel Devices
M. Jia, M. Kim, T. Kim 
 Ulsan National Institute of Science and Technology, Ulsan, Korea
ICP phenomenon has been widely used for fabricating microfluidic devices of pre-concentration, micromixing and desalination. However, theoretical research and simulation of ICP have not been carefully dealt with. We provide a multiphysics simulation of a DC-ICP device based on improved numerical settings in this work.
D. Mi ,
 KEISOKU Engineering System Co., Ltd., Chiyoda-ku, Tokyo, Japan
Optimization of a typical electrochemical system with insulating shields is considered in this work, which objective is to reduce the current peak due to singularity and smooth the current density distribution along electrode surface. Moving mesh method was adopted to allow change in design variables, i.e., position and width of the insulating shields. It was found that combining optimization ...
V. Tzanov , J. Munoz , F. Torres , N. Barniol ,
 Universitat Autonoma de Barcelona, Bellaterra, Spain
Micro-machined ultrasound transducers have a wide range of applications. As a sensor or actuator they can be used for measuring fluid speed and direction, to mix and excite particles (sonication), for taking images (ultrasonography), for non-destructive testing and many other purposes in wide variety of fields. For this particular study, a simplified model of micro-machined piezoelectric ...
J. Güdelhöfer , R. Gottkehaskamp , A. Möckel ,
 University of Applied Sciences Düsseldorf, Düsseldorf, Germany
 Technical University of Ilmenau, Ilmenau, Germany
The calculation of additional losses in induction machines is a challenging task. In skewed motors, a part of these losses is connected to the phenomena of inter-bar currents. Inter-bar currents flow between adjacent bars through the rotor lamination. Since they are aligned perpendicular to bar currents, they cannot be calculated with 2D FEM, where the motor geometry is cut perpendicular to its ...
H. H. Zhang , A. Bardakas , W. D. Leon-Salas ,
 School of Engineering Technology, Purdue University, West Lafayette, IN, USA
Strain gauges have been extensively used for detecting strain in various applications. Double-ended tuning fork (DETF) strain gages present better performance characteristics than standard foil gauges, including higher sensitivity, smaller size and higher resolution. This study focuses on the design of a microelectromechanical (MEMS) double-ended tuning fork (DETF) and the evaluation of its ...
C. Frankrone , L. Fromme ,
 Department of Engineering Sciences and Mathematics, Bielefeld University of Applied Sciences, Bielefeld, Germany
Machines with rotating components are prone to vibrations because an imbalance of the rotor would always act as a harmonic excitation force to the machine. Thus oscillations close to the natural frequencies are tried to pass through fast in the run-up and cast-down or even completely avoided for higher structural frequencies. Nevertheless vibrations still occur and affect the design of the ...
A. Alipour , S. D. Mookhoek 
 Department of Structural Reliability, TNO, Delft, The Netherlands
A very important phase in construction of a pavement structure is the compaction process of the asphaltic mixture. It reflects a complex mechanism where many parameters are influential. These parameters are associated with the initial air voids content in the asphaltic mixture, aggregate gradation and angularity, asphalt binder content and its viscosity, asphaltic mixture layer thickness, ...