Experimental and Numerical Analysis of Soil Motions Caused by Free Vibrations of a Building Model

2000 ◽  
Vol 90 (6) ◽  
pp. 1464-1479 ◽  
Author(s):  
P. Gueguen
Keyword(s):  
Numerical Analysis ◽  
Free Vibrations ◽  
Building Model

Numerical analysis of free vibrations of rectangular plates based on different approaches

2019 ◽  
pp. 33-41
Author(s):  
Oleksandr Grigorenko ◽  
◽  
Maksym Borysenko ◽  
Olena Boychuk ◽  
Volodymyr Novytskyi ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Free Vibrations ◽  
Rectangular Plates

One approach to numerical analysis of free vibrations of thin-walled structures

1982 ◽  
Vol 18 (11) ◽  
pp. 986-993
Author(s):  
Ya. M. Grigorenko ◽  
E. I. Bespalova ◽  
A. B. Kitaigorodskii ◽  
A. I. Shinkar'
Keyword(s):  
Numerical Analysis ◽  
Free Vibrations ◽  
Thin Walled Structures ◽  
Thin Walled

Numerical Simulation of Vortex-Induced Vibration and Torsional Flutter of Rectangular Cross-Sections by k-ε Model

2003 ◽  
Author(s):  
Kenji Shimada ◽  
Takeshi Ishihara
Keyword(s):  
Numerical Simulation ◽  
Numerical Analysis ◽  
Cross Sections ◽  
Present Method ◽  
Free Vibrations ◽  
Shear Layer Instability ◽  
Vortex Induced Vibration ◽  
Vortex Induced Vibrations ◽  
Karman Vortex ◽  
Occurrence Mechanism

In this paper, torsional aeroelastic vibration is investigated by wind tunnel experiment and numerical analysis which incorporates 2-dimensional modified k-ε model. Experimental results shows that the torsional vortex-induced vibration are classified into several groups. Harmonics and of the Karman-vortex or impinging-shear-layer-instability are found to be involved with the occurrence mechanism of these instabilities. Two types of rectangular cross-sections are chosen to examine the applicability of the numerical method. Unsteady wind forces, pressure distribution and free vibrations are compared with experiments. Although the present method is 2-dimensional, vortex-induced vibrations and torsional flutter were well simulated by the method.

Modelling and experimental validation of 1-degree-of-freedom impacting oscillator

2018 ◽  
Vol 233 (4) ◽  
pp. 418-430 ◽  
Author(s):  
Krzysztof Witkowski ◽  
Grzegorz Kudra ◽  
Grzegorz Wasilewski ◽  
Jan Awrejcewicz
Keyword(s):  
Numerical Analysis ◽  
Mathematical Modelling ◽  
Experimental Validation ◽  
Free Vibrations ◽  
Degree Of Freedom ◽  
Stepper Motor ◽  
Model Parameters ◽  
Linear Damping ◽  
The Impact ◽  
Experimental Rig

In this article, a mechanical 1-degree-of-freedom oscillator with harmonic forcing and impacts was analysed both numerically and experimentally. A special attention was paid to the mathematical modelling and realistic numerical simulations of a real system. The developed experimental rig consists of a cart mounted on a guide, connected with springs to the support, and equipped with one-sided stiff limiter of motion. The cart was excited by an unbalanced disc mounted on the shaft of a stepper motor. Modelling was focused on the mathematical description of the impact process, where soft obstacle with Hertzian stiffness was assumed and different forms of non-linear damping were tested, including original modifications of the already used models. Model parameters are identified based on two experimental solutions corresponding to free vibrations – with and without impacts. Then, the model was validated by means of experimental and numerical analysis of bifurcation dynamics of the forced system.

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