EMP Coupling Analysis Using the Frequency (Transfer Function) Method with the SCEPTRE Computer Program

1975 ◽  
Vol EMC-17 (3) ◽  
pp. 181-185 ◽  
Author(s):  
Richard Hess
Keyword(s):  
Transfer Function ◽  
Computer Program ◽  
Function Method ◽  
Coupling Analysis ◽  
Transfer Function Method ◽  
Frequency Transfer

scholarly journals A condensed transfer function method as a tool for solving vibroacoustic problems

2015 ◽  
Vol 230 (6) ◽  
pp. 928-938 ◽  
Author(s):  
Valentin Meyer ◽  
Laurent Maxit ◽  
Jean-Louis Guyader ◽  
Thomas Leissing ◽  
Christian Audoly
Keyword(s):  
Transfer Function ◽  
Function Method ◽  
Transfer Functions ◽  
Mechanical Systems ◽  
Test Cases ◽  
Point Contacts ◽  
Transfer Function Method ◽  
Frequency Transfer ◽  
Complex Mechanical Systems

Substructuring approaches are nowadays widely used to predict numerically the vibroacoustic behavior of complex mechanical systems. Some of these methods are based on admittance or mobility frequency transfer functions at the coupling interfaces. They have already been used intensively to couple subsystems linked by point contacts and enable to solve problems at higher frequency while saving computation costs. In the case of subsystems coupled along lines, a Condensed Transfer Function method is developed in the present paper. The admittances on the coupling line are condensed in order to reduce the number of coupling forces evaluated. Three variants are presented, where the transfer functions are condensed using three different functions. After describing the principle of the CTF method, simple structures will be given as test cases for validation.

SPECTRA Thermal Fatigue Tests Under Frequency Controlled Fluid Temperature Variation: Transient Temperature Measurement Tests

2006 ◽  
Author(s):  
Nobuchika Kawasaki ◽  
Sumio Kobayashi ◽  
Shinichi Hasebe ◽  
Naoto Kasahara
Keyword(s):  
Transfer Function ◽  
Temperature Measurement ◽  
Thermal Fatigue ◽  
Function Method ◽  
Power Plants ◽  
Temperature History ◽  
Transient Temperature ◽  
Fluid Temperature ◽  
Transfer Function Method ◽  
Frequency Transfer

The coolant leakage by thermal striping phenomenon should be prevented at nuclear power plants and a lot of efforts are made to develop its evaluation methods. The frequency transfer function method can be used to obtain temperature and stress response to fluid temperature history using transfer function models; therefore it is considered as an excellent evaluation method. To measure temperature response of structures to fluid temperature variations and to confirm their frequency characteristics, transient temperature measurement tests were performed by JAEA. In the transient temperature measurement tests, three different frequencies of sinusoidal fluid temperature waves (0.05, 0.2, 0.5Hz) were controlled using frequency controlled thermal fatigue test equipment (SPECTRA) and temperature responses at inner and outer piping surfaces were measured along the test sections. Frequency effects on temperature attenuation during transfer process from fluid to structures were confirmed and the effective heat transfer function in frequency transfer function method was verified by transient temperature measurement test results.

Modelling of periodic flows in pipelines by transfer function method

2010 ◽  
Vol 48 (2) ◽  
pp. 255-259 ◽  
Author(s):  
H. Prashanth Reddy ◽  
M. Hanif Chaudhry ◽  
Pranab K. Mohapatra
Keyword(s):  
Transfer Function ◽  
Function Method ◽  
Periodic Flows ◽  
Transfer Function Method
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