Article
Instruments & Instrumentation
Wanrong Lin, Yunfei Xu, Sijia Wang, Zhiwen Chen, Zhengqiu Xie, Wenbin Huang
Summary: This paper proposes a magnetic and torsional spring coupling energy harvester, which achieves wideband energy harvesting in limited space and low frequency vibrations by adjusting the spring stiffness and introducing internal resonance phenomenon.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Civil
Zhe Li, Yi Li, Yuda Hu
Summary: This paper investigates the principal parametric resonance of an axially moving piezoelectric rectangular thin plate under thermal and electric field. The vibration equation is derived based on the Kirchhoff-Love plate theory and Von Karman theory, and is then discretized using Galerkin's method. The numerical results analyze the influences of various parameters on the system's vibration performance and stability, and discuss the effects of bifurcation control parameters on the nonlinear dynamic characteristics of the system.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2023)
Article
Engineering, Mechanical
Xiaochun Nie, Sheng Pei, Ting Tan, Zhitao Yan, Zhimiao Yan
Summary: This study investigates the impact of internal resonance mechanism on the performance of vibration energy harvesters, including a theoretically verified model and analytically derived solutions. Experimental results indicate that the harvested power is associated with the electrical damping caused by the load resistance, and the internal resonance responses vary with the excitation amplitude and load resistance, exhibiting different stability characteristics.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Mathematics, Applied
Xiaochun Nie, Ting Tan, Zhimiao Yan, Zhitao Yan, Lingzhi Wang
Summary: The piezoelectric vibration energy harvester based on 1:2 internal resonance has the advantages of wide-band and high-efficiency energy harvesting. The method of equivalent forced load is proposed to decouple the voltage frequency and improve the accuracy of the output response. The amplitude-frequency response curve exhibits nonlinear hardening and softening in the whole excitation frequency range.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2023)
Article
Engineering, Mechanical
Keyu Chen, Shitong Fang, Qiang Gao, Donglin Zou, Junyi Cao, Wei-Hsin Liao
Summary: This paper proposes a new method to enhance the performance of auxetic nonlinear piezoelectric energy harvesting. By increasing the unit cell number, the proposed design achieves both broad operating bandwidth and high output power. The method is validated through finite element simulation and experiments.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Mathematics, Interdisciplinary Applications
Bamadev Sahoo
Summary: The present study investigates the stability and bifurcation of axially moving hinged-clamped beams under parametric excitation caused by speed alterations. The results show that the introduction of material damping changes the form of the solutions, while decreasing viscous damping strengthens the effect of internal resonance.
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
(2022)
Article
Energy & Fuels
Hyo-Kyung Shim, Shuailing Sun, Hyun-Soo Kim, Dong-Gyu Lee, Yeon-Jeong Lee, Ji-Soo Jang, Kyung-Hoon Cho, Jeong Min Baik, Chong-Yun Kang, Yonggang Leng, Sunghoon Hur, Hyun-Cheol Song
Summary: A nonlinear piezoelectric energy harvester with a coupled beam array is designed to broaden bandwidth and improve energy harvesting performance. Experimental results show that the harvester outperforms traditional non-coupled multi-resonance harvester, with 144.2% higher output power and a 93.3% wider bandwidth in a certain frequency range. The harvester can be used in unstable or varying conditions.
Article
Engineering, Mechanical
Biagio Carboni, Stefano Catarci, Walter Lacarbonara
Summary: This study employs a nonlinear Euler-Bernoulli model to investigate parametric resonance motions of slender piezoelectric beams driven by a pulsating voltage with a DC component. The method of multiple scales up to the fifth nonlinear order is used to solve the nonlinear piezoelastic problem, overcoming modal projection drawbacks and restrictions on oscillation amplitude range. Analytical outcomes are compared with numerical solutions from ABAQUS, showing new aspects of parametric resonance motions which can be useful for applications like dynamic morphing of thin surfaces.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Rakesha Chandra Dash, Dipak Kumar Maiti, Bhrigu Nath Singh
Summary: A geometrically non-linear finite element method has been developed to study the dynamic characteristics of galloping based piezoelectric energy harvesters, with validated results compared to experimental data. A parametric study was conducted to investigate the effects of piezoelectric patch length, galloping force coefficients, and load resistance on power output. The analysis highlights the importance of numerical methods in solving complex fluid and structure problems in the GPEH system.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Multidisciplinary Sciences
Ata Keskekler, Oriel Shoshani, Martin Lee, Herre S. J. van der Zant, Peter G. Steeneken, Farbod Alijani
Summary: The experimental study shows enhanced nonlinear damping in graphene nanodrums close to internal resonance conditions, supporting the microscopic theory. It reveals that engineered nonlinear dissipation in resonators can be achieved through parametric resonance and internal resonance interactions.
NATURE COMMUNICATIONS
(2021)
Article
Mechanics
Shyam Kishor Sharma, Satish Kumar, Rajeev Kumar
Summary: This paper presents a hybrid model of a piezoelectric energy harvester and a triboelectric energy harvester. The study investigates the effect of various design parameters and uses a genetic algorithm to maximize the harvested energy. This research is significant for designing prototypes of energy harvesters for different applications.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Thermodynamics
Zhengqiu Xie, Liang Liu, Wenbin Huang, Ruizhi Shu, Shuaishuai Ge, Yu Xin, Zhiwen Chen, Wanrong Lin
Summary: In this paper, a broadband E-shaped bistable piezoelectric energy harvester (EBPEH) is developed to harvest wideband and low frequency vibration energy for the sensors of the Internet of Things. It consists of a steel U-shaped host beam (UHB) and a steel parasitic piezoelectric cantilever beam (PPCB). The nonlinear interaction between the tip magnet of the PPCB and the UHB leads to a built-in bistability of the harvester, eliminating the need for an external magnet and resulting in a compact structure. By designing multimodal frequencies of the two beams, a triple bandwidth enhancement from 6 Hz to 18.5 Hz is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Acoustics
Pradyumna Kumar Sahoo, S. Chatterjee
Summary: This study investigates the effects of high-frequency parametric excitation on the principal parametric resonance of a nonlinear beam through theoretical and experimental analysis. It is found that the high frequency excitation significantly modifies the effective damping and stiffness of the system, causing the parametric resonance curve to shift towards higher frequencies. Furthermore, it is discovered that the principal parametric resonance can be effectively controlled and suppressed by high frequency excitation.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Chemistry, Analytical
Zhang Qichang, Yang Yang, Wang Wei
Summary: The introduction of nonlinearity can widen the frequency band of the piezoelectric vibration energy harvester and allow for more energy acquisition in the overall frequency range.
Article
Engineering, Mechanical
Xin Xiong, Yu Wang, Jinqiang Li, Fengming Li
Summary: In this paper, a vibration isolation system based on bio-inspired structure with a nonlinear absorber is proposed. The nonlinear vibration properties and complex dynamical characteristics are explored in the presence of internal resonance. Numerical integrations and bifurcation diagrams are used to verify the analytical results.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Anshul Garg, Santosha K. Dwivedy
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2020)
Article
Engineering, Mechanical
Anshul Garg, Santosha K. Dwivedy
NONLINEAR DYNAMICS
(2020)
Proceedings Paper
Engineering, Mechanical
Anshul Garg, Santosha K. Dwivedy
14TH INTERNATIONAL CONFERENCE ON VIBRATION ENGINEERING AND TECHNOLOGY OF MACHINERY (VETOMAC XIV)
(2018)
Proceedings Paper
Engineering, Mechanical
A. Raj, A. Garg, S. K. Dwivedy
INTERNATIONAL CONFERENCE ON VIBRATION PROBLEMS 2015
(2016)
Proceedings Paper
Engineering, Mechanical
A. Garg, S. K. Dwivedy
INTERNATIONAL CONFERENCE ON VIBRATION PROBLEMS 2015
(2016)
Proceedings Paper
Automation & Control Systems
S. K. Dwivedy, Anvesh K. Reddy, Anshul Garg
VIBRATION ENGINEERING AND TECHNOLOGY OF MACHINERY
(2015)
Article
Mechanics
E. Mubai, D. P. Mason
Summary: The two-dimensional turbulent thermal classical far wake is investigated in this study. The turbulence is described using the Boussinesq hypothesis for Reynolds stresses and Prandtl's mixing length model for eddy viscosity and eddy thermal conductivity. Two conservation laws are derived for the thermal boundary layer equations using the multiplier method, and two conserved quantities are obtained from the conserved vectors and boundary conditions. Lie point symmetry associated with the momentum and thermal conserved vectors is derived, showing that the momentum and thermal mixing lengths are proportional. An invariant solution is obtained numerically using a shooting method, and analytically when v = 0, kappa = 0.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)
Article
Mechanics
Daniel J. Arrigo, Travis C. Chism
Summary: This paper investigates the governing equations for plane stress deformations of isotropic incompressible hyperelastic materials. The authors previously discovered a linearization method for the plane strain case of the Varga material, and in this paper, they further demonstrate that the governing equations for the plane stress case can also be linearized.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)
Article
Mechanics
A. P. Chugainova, R. R. Polekhina
Summary: This article numerically investigates the conditions for the decay of a nonlinear wave into a system of waves traveling at different velocities in a viscoelastic weakly anisotropic medium. Solutions of a hyperbolic system of equations are studied in the region of nonuniqueness of parameters, where a solution to the Riemann problem can be constructed with both a single wave and a system of waves corresponding to the same initial data.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)
Article
Mechanics
Yu. N. Grigoriev, E. I. Kaptsov, S. V. Meleshko
Summary: This paper studies the mathematical properties of gasdynamics equations with thermochemical nonequilibrium and provides solutions for two different models. The results show that the solutions to the modified system of equations are physically consistent and can describe the effects of thermochemical nonequilibrium.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)
Article
Mechanics
Y. Hao, X. Y. Guo, Y. B. Fu
Summary: This paper investigates the nonlinear stochastic dynamic response of a three-degree-of-freedom(3-DOF) airfoil with high substructural nonlinearity under vertical turbulent disturbances. The effects of parameters such as the incoming velocity, turbulence scale and intensity on the stochastic dynamics behavior of the system are clarified.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)
Article
Mechanics
T. Flament, J. -F. Deu, A. Placzek, M. Balmaseda, D. -M. Tran
Summary: This paper focuses on the numerical computation of vibrations in geometrically nonlinear structures induced by aeroelastic coupling with fluid flow using reduced order models (ROM). The proposed ROM formulation utilizes projection on a basis of reduced dimension enhanced with dual modes, allowing for the accurate capture of dynamic characteristics and adaptation to unsteady aerodynamic loads. The limitations of the classical Implicit Condensation method are highlighted, while the ROM proposed overcomes these limitations and accurately captures the dynamics.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)
Article
Mechanics
Sidhartha Sankar Roy, Kishore Chandra Biswal
Summary: This study investigates the non-linear slosh dynamics of a sloped wall tank with a bottom-mounted object under seismic excitation. The potential flow theory is used to model the liquid domain using a mixed Eulerian-Lagrangian method. The study successfully quantifies the non-linear seismic response of the tank and the influence of the internal object on the hydrodynamic behavior. A parametric investigation is conducted by altering the object's height. Comparison with linear analysis justifies the necessity of non-linear analysis. The developed non-linear finite element model is found to be more effective and can be used in designing structure-coupled sloped wall TLDs.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)
Article
Mechanics
Kapil Dev, Om P. Suthar
Summary: This study presents stability analyses of thermosolutal convection in a Newtonian fluid-saturated Darcy porous layer under non-uniform inclined heating, considering the presence of the Soret effect. The results reveal the destabilizing effect of the solutal Darcy-Rayleigh number and Lewis number on the system's stability, while the Soret parameter has a non-monotonic effect depending on the horizontal Rayleigh number.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)
Article
Mechanics
Sandhya Maurya, Dia Zeidan, Manoj Pandey
Summary: This paper investigates a two-phase mass flow model governed by gravity, which involves solid particles and a viscous fluid. By utilizing the Lie symmetries admitted by the system, similarity solutions for the (2+1)-dimensional two-phase mass flow model are obtained. Through analytical solutions and numerical analysis, the physical behaviors of the resulting systems are successfully analyzed.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)
Article
Mechanics
Longfei Tan, Wei Zhang, Zixun Wang, Bowen Hou, Wei Sun
Summary: This study investigates the factors influencing the stiffness variation characteristics of a bolted joint during service, including macro deviation, micro-topography, and hysteresis characteristics. Through experiments and finite element modeling analysis, it is found that macro deviations and micro-topography on the bearing surface can cause irregular dynamic changes in the stiffness of the bolted joint, significantly affecting the dynamic/static response of the entire structure.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)
Article
Mechanics
Yu Xiao, Ze-Qi Lu, Nan Wu
Summary: This study investigates the characteristics of a magnet-engaged nonlinear piezoelectric energy generator stimulated by friction-induced vibration (FIV) in two distinct design configurations (in parallel and in-series). The results indicate that factors such as decay factor, dynamic friction coefficient, static friction coefficient, and normal force have an effect on the stability of the system and the generation of FIV. The in-parallel systems exhibit a higher charging power within the same operating range, while the in-series systems are more likely to excite FIV with a wider operating range.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2024)