研究開発におけるマルチフィジックスシミュレーションの具体例
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COMSOL コンファレンス 2020 論文集を見る
Snap Buckling of a Constrained Photomechanical Switch Driven by Elastic Instability
Photomechanical materials experience strains in response to light of certain wavelengths. These remotely triggered, photo-induced strains lead to large-scale deformations, presenting significant opportunities for wireless actuators and light-driven morphing structures. A large space of ... 詳細を見る
Advanced Multiphysics Thermal Hydraulic Models for the High Flux Isotope Reactor
Engineering design studies of the feasibility of conversion of the High Flux Isotope Reactor (HFIR) from high-enriched uranium to low-enriched uranium fuel are ongoing at ORNL as part of an effort sponsored by the U.S. Global Threat Reduction Initiative program. HFIR is a very high flux, ... 詳細を見る
A Comparison of Mass Reduction Methods for Silicon-on-Oxide (SOI)-based Micromirrors
Beam steering and adaptive optics micromirror applications commonly demand optically flat surfaces with minimal mass. When reflective coatings (usually metallic Au or Al) are applied to micromirror surfaces in order to meet optical reflectivity requirements the resulting film stress ... 詳細を見る
Statistical Modeling and Contact Analysis of RF MEMS Surface
Radio frequency (RF) micro-electro mechanical system(MEMS) switch works in on/off modes controlled by electrostatic forces. In off mode, rough surfaces of electrodes come into a contact to shunt the RF signal. Surface contact area has been recognized as a key factor in RF MEMS ... 詳細を見る
Infrasound Assessment of the Roller Compacted Concrete Dam: Case Study of the Portugues Dam in Ponce, PR
The U.S. Army Corps of Engineers is currently investigating the use of infrasound sensors to monitor the health of structures of interest. Infrasound is low-frequency (2-20 Hz) acoustic energy and is capable of propagating many kilometers from the source structure. Large infrastructure, ... 詳細を見る
Bridge Scour Detection of the Feather River Bridge in Yuba City, CA through the use of Finite Element Modeling and Infrasound
Ongoing studies by the US Army Engineer Research and Development Center (ERDC) are investigating infrasound as a means of persistent monitoring and scour detection at bridges through analysis of the frequency change of the structure caused by altered boundary conditions. Bridges ... 詳細を見る
Design and Simulation of MEMS Based Piezoelectric Insulin Micro-Pump
One of the most effective treatments for diabetes type 1 and 2 is the administering Insulin. The design of positive volumetric insulin pump is significantly a multiphysics problem where the volumetric change of the main pump chamber and the pumped fluid are directly coupled. We used ... 詳細を見る
Structural Performance of Polymeric Composite Members in a Transmission Line Tower
On transmission lines, the theft of redundant steel members from the transmission towers has been reported in recent years. The removal of these members from the tower can result in the collapse of the tower. An alternative to avoid this problematic is to replace some steel components ... 詳細を見る
Constitutive Modeling of Polyethylene in COMSOL Multiphysics® Software
Introduction The constitutive behavior of Polyethylene, like most polymers, is nonlinear, temperature, and strain-rate dependent. It cannot be accurately represented with standard elastic-plastic or hyperelastic material models [1]. The focus of this work is on Medium Density ... 詳細を見る
Mitigation of Greenhouse Gas Leakage from Oil and Gas Wells
Pre-existing oil and gas wells and well bores represent highly permeable pathways for leakage of greenhouse gases; in Alberta alone leaks have been estimated to provide the equivalent of 3.5 million tonnes of CO2 per annum. In addition to abandoned wells without plugs, gas leakage may ... 詳細を見る