Primary degrees of freedom of the printed circuit board selection based on the reduced method

Yang Xue; He Min; Xiong Changwu

doi:10.1117/12.3011027

2 November 2023 Primary degrees of freedom of the printed circuit board selection based on the reduced method

Yang Xue, He Min, Xiong Changwu

Proceedings Volume 12919, International Conference on Electronic Materials and Information Engineering (EMIE 2023); 1291907 (2023) https://doi.org/10.1117/12.3011027
Event: 3rd International Conference on Electronic Materials and Information Engineering (EMIE 2023), 2023, Guangzhou,, China

Abstract

A reduced method is used to select primary degree of freedom (DOF) of the printed circuit board. These nodes with primary DOF are selected as test points in the modal test to verify the accuracy of the modal numerical model. The primary elements of the printed circuit board are selected firstly based on their weighted Rayleigh quotient. Then the nodes with primary DOF are selected by the dynamic condensation method. By using this method, the error of the first 25 modal frequencies between the reduced model and the complete model is below 5% when the selected primary DOF is set to 30. Most selected DOF are z direction, so number of test points of the modal test in the other two directions is much less than the traditional test method.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yang Xue, He Min, and Xiong Changwu "Primary degrees of freedom of the printed circuit board selection based on the reduced method", Proc. SPIE 12919, International Conference on Electronic Materials and Information Engineering (EMIE 2023), 1291907 (2 November 2023); https://doi.org/10.1117/12.3011027

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