Influence of the perforation configuration on dynamic behaviors of multilayered beam structure

被引：33

作者：

Almitani, Khalid H. ^{[1
]}

Abdelrahman, Alaa A. ^{[2
]}

Eltaher, Mohamed A. ^{[1
,2
]}

机构：

[1] King Abdulaziz Univ, Fac Engn, Mech Engn Dept, POB 80204, Jeddah, Saudi Arabia

[2] Zagazig Univ, Fac Engn, Mech Design & Prod Dept, POB 44519, Zagazig, Egypt

来源：

STRUCTURES | 2020年 / 28卷

关键词：

Modal participation factors; Resonant frequencies; Frequency response; Perforated beam; Multilayered structure; Finite element; RESONANCE FREQUENCIES; STRESS-ANALYSIS; SANDWICH BEAMS; VIBRATION; NANOBEAMS; MODEL; STABILITY; CONTACT; PLATES; HOLES;

D O I：

10.1016/j.istruc.2020.09.055

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The novelty of this paper is to investigates the free vibration, frequency response and modal participation factors of the perforated multilayer microbeam structures using finite element analysis with different hole's geometry, filling ratio and array of hole. The three squared, rectangular, and circular configurations of perforation are considered through analysis. Elasto-dynamic finite element formulation is implemented. The natural frequencies for the three different perforation configurations at different number of holes are investigated. For better understanding of the dynamic behavior of multilayered perforated beam structure, both modal and harmonic responses are presented and discussed. To specify the most suitable vibrational mode for a certain degree of freedom for base excitation, both participation factor and the associated modal effective mass are presented and analyzed. The obtained results show the remarkable effect of perforation configuration and the number of holes throughout the cross-sectional area on the dynamic behavior of multilayered perforated beam structures. Different boundary conditions are considered through analysis. The obtained results are supportive for the design of perforated beam structures in both macro and micro-scales.

引用

页码：1413 / 1426

页数：14

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