Fequency domain finite element modeling of 2D parallel-plate waveguide antenna array

2005 ◽  
Author(s):  
Yong Cai
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Antenna Array ◽  
Parallel Plate ◽  
Element Modeling ◽  
Parallel Plate Waveguide

Giant temperature span in electrocaloric regenerator

Science ◽  
2020 ◽  
Vol 370 (6512) ◽  
pp. 125-129 ◽  
Author(s):  
A. Torelló ◽  
P. Lheritier ◽  
T. Usui ◽  
Y. Nouchokgwe ◽  
M. Gérard ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Structural Design ◽  
Heat Exchangers ◽  
Parallel Plate ◽  
Maximum Temperature ◽  
Next Generation ◽  
Element Modeling ◽  
Cooling Devices ◽  
Multilayer Capacitors

Cooling devices based on caloric materials have emerged as promising candidates to become the next generation of coolers. Several electrocaloric (EC) heat exchangers have been proposed that use different mechanisms and working principles. However, a prototype that demonstrates a competitive temperature span has been missing. We developed a parallel-plate active EC regenerator based on lead scandium tantalate multilayer capacitors. After optimizing the structural design by using finite element modeling for guidance and to considerably improve insulation, we measured a maximum temperature span of 13.0 kelvin. This temperature span breaks a crucial barrier and confirms that EC materials are promising candidates for cooling applications.

Exact First Order Finite Element Modeling for Eddy Current NDE

1991 ◽  
Vol 3 (1) ◽  
pp. 235-253 ◽  
Author(s):  
L. D. Philipp ◽  
Q. H. Nguyen ◽  
D. D. Derkacht ◽  
D. J. Lynch ◽  
A. Mahmood
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Eddy Current ◽  
Element Modeling ◽  
First Order ◽  
Eddy Current Nde

Tire Vibration Modes and Effects on Vehicle Ride Quality

1993 ◽  
Vol 21 (1) ◽  
pp. 23-39 ◽  
Author(s):  
R. W. Scavuzzo ◽  
T. R. Richards ◽  
L. T. Charek
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Operating Conditions ◽  
Modal Testing ◽  
Ride Quality ◽  
Vibration Modes ◽  
Inflation Pressure ◽  
Passenger Cars ◽  
Element Modeling ◽  
Road Surfaces

Abstract Tire vibration modes are known to play a key role in vehicle ride, for applications ranging from passenger cars to earthmover equipment. Inputs to the tire such as discrete impacts (harshness), rough road surfaces, tire nonuniformities, and tread patterns can potentially excite tire vibration modes. Many parameters affect the frequency of tire vibration modes: tire size, tire construction, inflation pressure, and operating conditions such as speed, load, and temperature. This paper discusses the influence of these parameters on tire vibration modes and describes how these tire modes influence vehicle ride quality. Results from both finite element modeling and modal testing are discussed.

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