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Explicit Novel Nonlinear Regression Method to Find Radial Natural Frequencies of Hemispherical Resonator
Springer Science and Business Media LLC - Tập 11 - Trang 2419-2428 - 2022
Beena Limkar, Vinay Vaidya, Gautam Chandekar
Hemispherical shells are commonly used in percussion instruments such as Hang, Bell, and Singing Bowls as well as other engineering applications. The dynamic properties of a hemispherical shell are important, especially for music which demands close control of the natural frequencies. Theoretically, the dynamic behavior of hemispherical shell is studied by solving very complex differential equatio... hiện toàn bộ
Effect of Ritz Vectors on Random Seismic Response of Cantilever Beam
Springer Science and Business Media LLC - Tập 7 - Trang 321-333 - 2019
Xiaoshuang Han, Bo Zhou, Wie-Min Gho, Soon-Keat Tan
To understand the effect of Ritz vectors on the random seismic response of non-uniform cantilever beam, the following works are performed: Firstly, the equation of random seismic response of non-uniform cantilever beam based on Hamilton theory is presented. The solution is derived using the combined classical Ritz and pseudo-excitation method. Secondly, by considering the principle of virtual disp... hiện toàn bộ
Damped Vibration Absorbers for Multi-mode Longitudinal Vibration Control of a Hollow Shaft
Springer Science and Business Media LLC - Tập 6 - Trang 1-12 - 2018
S. Zhao, Q. Chen, B. Yao
The present work adopted damped vibration absorbers (DVAs) to attenuate multi-mode longitudinal vibration of the hollow shaft. The dynamic behavior of a shaft is analyzed for the guidance to the initial parameter design of DVAs and the parameters of DVAs are optimized. Subsequently, specific structures of DVAs are designed taking into account the hollow characteristic of the shaft. Furthermore, fi... hiện toàn bộ
Static Buckling Analysis of FG Sandwich Nanobeams
Springer Science and Business Media LLC - - Trang 1-26 - 2023
Bui Van Tuyen, Gia Thien Luu
This paper proposes a third-order shear deformation theory to study the static buckling of FG sandwich nanobeams, where the core layer of the beam has hollows in the z direction, and the two sandwich types mentioned in this paper are the hardcore and softcore types. Based on nonlocal theory, the size effect is considered, and two different solutions, as an exact solution and an approximate solutio... hiện toàn bộ
Time Delayed Feedback Control Applied in an Atomic Force Microscopy (AFM) Model in Fractional-Order
Springer Science and Business Media LLC - Tập 8 - Trang 327-335 - 2019
Angelo M. Tusset, Mauricio A. Ribeiro, Wagner B. Lenz, Rodrigo T. Rocha, Jose M. Balthazar
In this work, the nonlinear dynamics and control of an Atomic Force Microscopy (AFM) model in fractional-order were investigated. For analyse of the chaos behaviour, the 0–1 test was used, since this is a good tool to characterise fractional-order differential systems. To bring the system from a chaotic state to a periodic orbit, the time-delayed feedback control technique for the fractional-order... hiện toàn bộ
Hierarchical Bayesian Model Updating Using Modal Data Based on Dynamic Condensation
Springer Science and Business Media LLC - Tập 12 Số 3 - Trang 4265-4286 - 2024
Ayan Das, Sahil Bansal
Numerical Investigation of Eigenvalue Characteristics (Vibration and Buckling) of Damaged Porous Bidirectional FG Panels
Springer Science and Business Media LLC - Tập 11 - Trang 1889-1901 - 2022
Priyanshu Hissaria, Prashik Malhari Ramteke, Chetan Kumar Hirwani, S. R. Mahmoud, Erukala Kalyan Kumar, Subrata Kumar Panda
The present research work aims to analyze the vibration and buckling behaviour of multidirectional FG porous structures engrained with damage. Power-law (P-FGM), sigmoid (S-FGM) and exponential (E-FGM) gradings are considered to compute the material properties of the cracked FG plate. The porosity effect on the structural strength has been modelled to explore the realistic influences. In the curre... hiện toàn bộ
Numerical Tuning of Nonlinear Energy Sinks in Shear Buildings
Springer Science and Business Media LLC - - Trang 1-14 - 2023
Eliot Motato, Fabio G. Guerrero
A nonlinear energy sink (NES) is an energy-dependent absorber that has gained popularity as it can resonate with any mode of the primary structure. An NES mitigates the primary structure’s vibrations in two different forms. In the first form, a one-directional energy flow is generated from the structure to the NES where the vibrating energy is consumed by the absorber damping. In the second form, ... hiện toàn bộ
Pounding Probability of Base-Isolated Steel Liquid Storage Tank Under Earthquake Actions
Springer Science and Business Media LLC - Tập 9 - Trang 1347-1357 - 2021
Wei Jing, Jie Feng, Xuansheng Cheng
Isolation can be used as an effective shock absorption measure for liquid storage tank (LST), but its defect is that pounding may be caused by earthquake. To study the pounding of sliding isolation LST, the Hertz-Damp model is used to simulate the nonlinear pounding behavior, three particle spring-mass simplified calculation model of sliding isolation LST is established, pounding dynamic equation ... hiện toàn bộ
Analysis of Quasi waves in Orthotropic Layer Bonded Between Piezoelectric Half-Spaces with Imperfect and Sliding Interfaces
Springer Science and Business Media LLC - - Trang 1-26 - 2023
Pato Kumari, Rupali Srivastava
The objective of present work is to investigate seismic wave reflection/transmission in an orthotropic layer bonded between two piezoelectric half-spaces in presence of an imperfect corrugated superstratum and sliding lower interface. Closed form analytical expressions for displacement field, electric potential, and velocity profile of quasi seismic waves are deduced for respective geomedia using ... hiện toàn bộ
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