Nonlinear vibration analysis of fiber metal laminated plates with multiple viscoelastic layers

2021 ◽  
Vol 168 ◽  
pp. 108297
Author(s):  
Hui Li ◽  
Zelin Li ◽  
Babak Safaei ◽  
Wanchong Rong ◽  
Wenyu Wang ◽  
...  
2013 ◽  
Vol 14 (4) ◽  
pp. 229-238
Author(s):  
Faramarz Ashenai Ghasemi ◽  
Reza Paknejad ◽  
Keramat Malekzadeh Fard

2014 ◽  
Vol 78 ◽  
pp. 167-176 ◽  
Author(s):  
A. Allahverdizadeh ◽  
I. Eshraghi ◽  
M.J. Mahjoob ◽  
N. Nasrollahzadeh

2017 ◽  
Vol 90 (1) ◽  
pp. 733-748 ◽  
Author(s):  
Jianqing Li ◽  
Changsheng Gao ◽  
Wuxing Jing ◽  
Yidi Fan

2018 ◽  
Vol 16 (1) ◽  
pp. 944-948 ◽  
Author(s):  
Sinan Maraş ◽  
Mustafa Yaman ◽  
Mehmet Fatih Şansveren ◽  
Sina Karimpour Reyhan

AbstractIn recent years, studies on the development of new and advanced composite materials have been increasing. Among these new technological products, Fiber Metal Laminates (FML), and hybrid structures made of aluminium, carbon, glass or aramid fiber, are preferred especially in the aircraft industry due to their high performance. Therefore, free vibration analysis is necessary for the design process of such structures. In this study, the vibration characteristics of FML for clamped-free boundary conditions were investigated experimentally and numerically. Firstly, numerical results were obtained using Finite Element Method (FEM) and then these results were compared with the experimental results. It was seen that the numerical results were in good agreement with the experimental results. As the theoretical model was justified, the effects of various parameters such as number of layers, fiber orientations, and aluminium layer thickness on the in-plane vibration characteristics of the FML straight beam were analysed using FEM. Thus, most important parameters affecting the vibration characteristics of the hybrid structures were determined.


2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Shanle Li ◽  
Feng Liu ◽  
Hongyan Wang ◽  
Haijun Song ◽  
Kuilong Yu

This paper aims to investigate nonlinear vibration characteristics of rotor system considering cogging and harmonic effects. Firstly, relative permeance with eccentric was established and then corrected by correction factor caused by the cogging effect. Based on the new formula of relative permeance, the expression of unbalanced magnetic force was obtained, and the coefficient of cogging effect was defined. Motion equations of rotor system were established, and Runge–Kutta method was used to solve the equations. Results showed that errors between finite and analytical results were smaller considering cogging and harmonic effects. When the harmonics were taken into consideration, the vibration of rotor increases sharply. When the cogging and harmonics were taken into consideration simultaneously, the vibration of rotor decreased instead, which means that stator slots have the effect of reducing vibration in rotor system. Rotor vibration was axis symmetry with static eccentricity rather than central symmetry with no eccentricity, and double, four times, and six times supply frequency always existed in the components of main frequency with eccentric.


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