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查看 COMSOL 用户年会 2020 论文

Acoustics and Vibrationsx

Effects of Fluid and Structural Forces on the Dynamic Performance of High Speed Rotating Impellers.

C. Thiagarajan[1], G. Shenoy[2], B. S. Shenoy[3]
[1]ATOA Scientific Technologies Pvt Ltd, Whitefield, Bangalore, India.
[2]Department of Mechanical & Manufacturing Engineering, Manipal Institute of technology, Manipal, India
[3]Department of Aeronautical & Automobile Engineering, Manipal Institute of Technology, Manipal, India

Vibration and Dynamic performances of the rotating machinery are conventionally evaluated based on the ... 扩展阅读

Acoustical Design of Stethoscope for Improved Performance

C. Thiagarajan[1], Gururajan R.[2], A. H. Baig[2], Prema S.[3]
[1]ATOA Scientific Technologies Pvt Ltd, Whitefield, Bangalore, Karnataka India
[2]University of Southern Queensland, Toowoomba Qld 4350, Australia.
[3]RMK Engineering College, Chennai, Tamil Nadu, India

Stethoscope is in use for more than 200 years for medical diagnostics, especially for auscultation. Recently, ... 扩展阅读

Quartz Transducer Modeling for Development of BAW Resonators

L.B.M. Silva[1], E.J.P. Santos[1]
[1]Laboratory for Devices and Nanostructures, Electronics and Systems Department, Universidade Federal de Pernambuco, Recife, PE, Brasil

Transducer optimization is a key aspect for successful development and deployment of advanced sensors, ... 扩展阅读

Glass Plates Noise Transmission Suppression by Means of Distributed Piezoelectric Composite Actuators Shunted by an Active Circuit

K. Novakova[1][2], P. Mokry[2]
[1]Research Centre for Special Optics and Optoelectronic Systems (TOPTEC), Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Turnov, Czech Republic
[2]Institute of Mechatronics and Computer Engineering, Technical University of Liberec, Liberec, Czech Republic

Glass windows represent a virtual sound source for buildings interior. It is very easy to make them vibrate ... 扩展阅读

Modeling of Ultrasonic Fatigue-Life Testing Machine

D. Dimitrov[1], V. Mihailov[1], B. Kostov[1]
[1]Technical University of Varna, Varna, Bulgaria

Usually fatigue-life tests of materials are long, time-consuming and expensive. With the development of high ... 扩展阅读

Modelization of Photoacoustic Trace Gases Sensors

B. Parvitte[1], C. Risser[1], R. Vallon[1], V. Zéninari[1]
[1]GSMA - Université de Reims, Reims, France

This paper aims to demonstrate the simulation of photoacoustic signals using FEM software. The Acoustics ... 扩展阅读

Two- and Three-Dimensional Holey Phononic Crystals with Unit Cells of Resonators

Y.F. Wang[1][2], Y.S. Wang[1], L. Wang[2]
[1]Institute of Engineering Mechanics, Beijing Jiaotong University, Beijing, China
[2]Department of Mechanical Engineering, Østfold University College, Halden, Norway

We show in this paper that by careful design of the geometry of the resonators, complete bandgap with ... 扩展阅读

Designing Materials for Mechanical Invisibility Cloaks

P. Olsson[1], F. Larsson[1], A. Khlopotin[1], S. Razanica[1]
[1]Chalmers University of Technology, Gothenburg, Sweden

In solid mechanics, there is considerable interest in achieving “invisibility”. The applications in mechanics ... 扩展阅读

Mathematical Model for Prediction of Transmission Loss for Clay Brick Walls

J. Ratnieks[1], A. Jakovics[1], J. Klavins[1]
[1]Laboratory for Modeling Technological and Environmental Processes, University of Latvia, Riga, Latvia

A 2D numerical model for determination of sound reduction index is set up in this work. Results are in good ... 扩展阅读

COMSOL Analysis of Acoustic Streaming and Microparticle Acoustophoresis

H. Bruus[1], P.B. Muller[1], R. Barnkob[1], M.J.H. Jensen[2]
[1]Technical University of Denmark, Kongens Lyngby, Denmark
[2]COMSOL, Kongens Lyngby, Denmark

We have simulated the ultrasound-induced acoustophoretic motion of microparticles suspended in an aqueous ... 扩展阅读