Finite element model verification for packaged printed circuit board by experimental modal analysis

2008 ◽  
Vol 48 (11-12) ◽  
pp. 1837-1846 ◽  
Author(s):  
Ying-Chih Lee ◽  
Bor-Tsuen Wang ◽  
Yi-Shao Lai ◽  
Chang-Lin Yeh ◽  
Rong-Sheng Chen
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Printed Circuit Board ◽  
Element Model ◽  
Experimental Modal Analysis ◽  
Model Verification ◽  
Circuit Board ◽  
Printed Circuit

scholarly journals Using experimental modal analysis to validate a finite element model of a tennis racket

2012 ◽  
Vol 34 ◽  
pp. 688-693 ◽  
Author(s):  
Guy Banwell ◽  
Stefan Mohr ◽  
Steve Rothberg ◽  
Jon Roberts
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Element Model ◽  
Experimental Modal Analysis ◽  
Tennis Racket

Development of a three-dimensional finite element model of a human tibia using experimental modal analysis

1991 ◽  
Vol 24 (6) ◽  
pp. 371-383 ◽  
Author(s):  
Marie Christine Hobatho ◽  
Robert Darmana ◽  
Patrick Pastor ◽  
Jean Jacques Barrau ◽  
Serge Laroze ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Three Dimensional ◽  
Element Model ◽  
Experimental Modal Analysis ◽  
Human Tibia ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

The Vibration Characteristics Analysis of U-Shaped Pipe Based on Finite Element and Modal Experiment

2013 ◽  
Vol 427-429 ◽  
pp. 53-56
Author(s):  
Li Zhang ◽  
Ye Tian ◽  
Yan Miao Ma
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Element Model ◽  
Vibration Characteristics ◽  
Experimental Modal Analysis ◽  
Piping System ◽  
Characteristics Analysis ◽  
The Finite Element Model ◽  
Pipe Vibration

The U-shaped pipe located in the compressor piping system of the lyophilizer is studied in this paper. Its finite element modal analysis is carried out through the software ABAQUS, and at the same time, the experimental modal analysis is conducted by the software LMS Test.lab and its corollary equipment. Through the comparison between the finite element modal analysis results and the experimental modal results, it can be seen that the two results have good consistence, which verifies that the finite element model is reasonable. This paper provides reference for the further studies of the curving pipe vibration.

Optimal Support Locations for a Printed Circuit Board Loaded With Heavy Components

2006 ◽  
Vol 128 (4) ◽  
pp. 449-455 ◽  
Author(s):  
Kun-Nan Chen
Keyword(s):  
Finite Element ◽  
Fundamental Frequency ◽  
Printed Circuit Boards ◽  
Printed Circuit Board ◽  
Element Model ◽  
Modal Testing ◽  
Circuit Board ◽  
Design Parameters ◽  
Printed Circuit ◽  
Design Variables

In the design of printed circuit boards (PCBs), it is preferable to increase their fundamental frequency so as to reduce the effects of the dynamic loading on them. The dynamic characteristics of a PCB carrying various electronic components and modules are most significantly affected by the geometrical and material properties of the bare board and by the boundary conditions supporting the loaded PCB. In this research, a PCB carrying a heavy CPU cooling fan and supported by six fastening screws is investigated by the modal testing and analyzed by the finite element method. After the finite element model of the PCB is verified by the experimental results, the locations of the six supporting screws are optimized to achieve a maximum fundamental frequency for the loaded PCB. The position of each fastening screw can be determined by two design variables, i.e., x and y coordinates. Two cases are studied: the symmetric case (six design parameters) with the symmetric constraint on the support locations imposed, and the asymmetric case (12 design parameters) without the constraint imposed. Finally, verification experiments are performed on the two PCBs supported by screws located at the optimal positions. Although relatively large differences between the calculated, optimized fundamental frequencies and the experimental values are observed, the experiments confirm a very significant improvement in frequency for both cases.

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