Structure-borne Noise Prediction Using an Energy Finite Element Method

1997 ◽  
Author(s):  
Fernando Bitsie ◽  
Robert Bernhard
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Noise Prediction ◽  
Element Method

Diagnosis of the Noise Discipline in Petrobras Offshore Units Projects

2004 ◽  
Author(s):  
Ernani L. Sztajnbok ◽  
Luiz Antonio Vaz Pinto ◽  
Arcanjo Lenzi ◽  
Fernando Pedrosa Guedes ◽  
Regina Ce´lia Vieira de Assis
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Boundary Element Method ◽  
Complex Problem ◽  
Noise Prediction ◽  
Offshore Platforms ◽  
Noise Sources ◽  
Acoustic Quality ◽  
Element Method

Health, comfort and the job efficiency of the crew of offshore platforms are factors deeply related to the acoustic quality of the places. The acoustic project of platforms include the noise prediction. It is a complex problem, because it involves several noise sources and receptors. Numeric methods such as Boundary Element Method and Finite Element Method are not still fully satisfactory for use in complex acoustic problems. This way, semi-empiric formulas and statistics methods are used in the prediction calculations. This paper describes some aspects of the Petrobras experience, along the years, in the performance of acoustic projects in offshore platforms. Finally, in this work, some important decisions are discussed for improvement of the acoustic quality of those operational units.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

Sign in / Sign up

Export Citation Format

Share Document