Consultez les proceedings de la Conference COMSOL 2020
Parametric Simulation of PZT Diameter to Hole Ratio for Optimized Membrane Displacement
For our simulation we used the Piezoelectric Devices interface. The structure was set with (clamped) fix constraint boundaries to both ends. The bottom electrode was set to be the ground for the electrostatic physics and the top electrode was set to be a Terminal with potential of 10V. A ... En savoir plus
COMSOL Multiphysics® Software for Modeling STW Devices
Electroacoustic resonators employing surface acoustic waves (SAW) are commercially widely used in RF filters, low noise frequency sources as well as various sensors. In all of these applications the resonance quality factor appears to be a limiting performance factor. Quite often ... En savoir plus
Loudspeaker Simulations in a Car Cabin
The goal of this study is to improve the audio simulation accuracy for automotive applications. COMSOL® Acoustics Module and LiveLink™ for MATLAB® were used to simulate the sound pressure generated by a loudspeaker in a car cabin. A comparison between simulated and measured sound ... En savoir plus
Simulation of Active Underwater Cylindrical Acoustic Antenna
The simulation of a large acoustic cylindrical antenna made of numerous identical transducers is very often out of reach in terms of computational cost. Therefore the usual design procedure consist in optimizing the transducer standing alone, either in free field arrangement or sitting ... En savoir plus
MEMS Electrostatic Acoustic Pixel
The growth of the electronics industry demand better components for the electronic systems. Such components need to be improve to keep up with the evolution of the digital era. The loudspeaker design has not been changed for almost a century [1-5]. The acoustic transducer is the last ... En savoir plus
Finite Element Analysis into Eigenfrequencies of a Total Hip Stem with Different Levels of Loosening
A finite element model of a total hip replacement (THR) has been developed from the approach of modal analysis. The model is capable of determining the first 15 Eigenmodes of a THR with an artificial bone model. The model was equipped with several different defects to simulate a ... En savoir plus
Ultrasound-assisted Microfluidic Devices: Insights and Optimization of Sono-microreactors
Possible drawbacks of microreactors are inefficient reactant mixing due to the predominance of laminar flow and clogging (when solid-forming reactions are performed or solid catalyst suspensions are used). Ultrasound has been successfully implemented not only to prevent these problems ... En savoir plus
PA Loudspeaker System Design Using Multiphysics Simulation
This paper utilizes lumped circuits equivalent and pressure acoustics to simulate the behavior of a PA loudspeaker in order to improve its design. En savoir plus
PVDF Piezoelectric Nanofibers as Hair Cell Substitutes: A Feasibility Study
Sensorineural hearing loss is the most common sensory deficit in the world, and within this category damage or loss of the primary sensory cells of the inner ear, known as hair cells is the most common cause [1]. Partial hearing loss is addressed by the use of hearing aids, electronic ... En savoir plus
A Lesson in Cartilage Therapy: Do Chondrocytes Utilize Mechanical Energy from Exercise for Cell Maintenance and Growth?
Using COMSOL Multiphysics® Acoustics Module: Chondrocytes modeled attached to a plane (to mimic in vivo constraints) are shown to resonate near 5MHz. At resonance, the mechanical energy density in the nucleus is two times higher than in the cytoplasm. Impact exercise is modeled as ... En savoir plus