Article
Engineering, Marine
H. Jokar, R. Vatankhah, M. Mahzoon
Summary: This paper focuses on the nonlinear secondary resonance of HAWT blades under super-harmonic and sub-harmonic excitations. A three-degree-of-freedom dynamic model is presented, and the multiple scale method is used to investigate the nonlinear secondary resonance. Analytical solutions for amplitude-frequency and phase-frequency responses are derived for different resonance cases. The stability of each solution branch is evaluated, and parametric studies are conducted to analyze the effects of damping, pre-twist, angular velocity, and excitation force amplitude. The validity of the results is demonstrated through comparisons.
Article
Mathematics, Applied
Feng Liu, Hui Liu, Xing Chen
Summary: This paper presents an analysis method of complex amplitudes to solve the nonlinearity problem of the system for the permanent magnet synchronous motor rotor with mixed eccentricity. The mass unbalance and static eccentricity form multi-frequency excitation, resulting in the coupling effect of forward and backward whirling motions. The analysis shows that both phases are linear time variant and their variation rates are equal to the difference between twice the excitation frequency and natural frequency of the generating system.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2023)
Article
Optics
David Haehnel, Christian Golla, Maximilian Albert, Thomas Zentgraf, Viktor Myroshnychenko, Jens Foerstner, Cedrik Meier
Summary: We demonstrate a strong enhancement of third harmonic generation in an amorphous silicon metasurface consisting of elliptical nano resonators, which is attributed to a new type of multi-mode Fano mechanism. Theoretical predictions are confirmed experimentally through linear and nonlinear transmission spectroscopy. Furthermore, quantitative nonlinear measurements reveal an absolute conversion efficiency of eta(max) approximate to 2.8 x 10(-7) at a peak power intensity of 1.2 GW cm(-2), with amplification factors of up to similar to 900 compared to unpatterned silicon films of the same thickness. Our findings open up possibilities for utilizing strong Fano-type multi-mode coupling in metasurfaces for high third harmonic generation in various applications.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Acoustics
Jen-San Chen, Qi-Wei Wen, Chien Yeh
Summary: In this paper, the steady state responses of a cantilever beam under a harmonic point force are studied. By replacing the infinite beam with a finite beam, expanding the beam deflection into a harmonic series, and using the Newmark method to integrate the discretized equation, the bifurcation diagram of the beam is obtained.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Engineering, Civil
B. Panigrahi, G. Pohit
Summary: The study investigates the nonlinear modeling and response analysis of cracked functionally graded Timoshenko beam, exploring the effects of various nonlinearities on the system response. Nonlinear differential equations of motion are derived using Lagrange's equation and solved using the Newmark-beta method, confirming the accuracy of the solution. A comprehensive parametric study on the effects of cracks, material properties, excitation frequencies, etc., is conducted to explore the nonlinear dynamic response of thick and thin beams.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Multidisciplinary
Ghislain Raze, Martin Volvert, Gaetan Kerschen
Summary: This paper proposes a novel efficient method to track the evolution of amplitude extrema in the frequency responses of nonlinear systems using the harmonic balance method. It outlines the means to compute the amplitude of a Fourier series and derives a set of equations characterizing a local extremum of a nonlinear frequency response amplitude curve. Efficient numerical procedures are used to evaluate these equations and their derivatives, and embed them in a predictor-corrector continuation framework. The proposed approach is illustrated on three examples of increasing complexity, demonstrating its effectiveness and applicability.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Ashkan Beiki, Mohsen Rahimi
Summary: This paper focuses on harmonic resonance analysis and compensation in the electrical power grid, particularly in regards to PMSG-based wind turbines. The study presents a harmonic resonance representation and impedance model of the system, taking into account the control of the grid-side converter. The harmonic resonance analysis is then conducted under feedforward compensation of the grid voltages, investigating the impact of voltage/current measurement filter bandwidths on the system's resonance response.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Engineering, Electrical & Electronic
Jutao Wang, Zhicheng Xue, Chunhua Cai, Debo Wang
Summary: This study proposes a circular-arc spiral piezoelectric energy harvester that can achieve three-dimensional energy harvesting in a low frequency vibration environment. The design of the arc spiral structure allows the cantilever beam to absorb energy from vibration in multiple directions and reduces the resonance frequency. The experimental results show that the circular-arc spiral energy harvester with a radian of 4π has the best output performance.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Civil
Zhi Sun, Limin Sun, Ye Xia
Summary: This study investigated the forced modal oscillation and resonance behavior of a single-span prismatic bridge under the influence of moving vehicles. The analysis revealed that a moving load can induce high-harmonic forced resonance amplification, particularly at low speeds. Numerical tests were conducted to verify the occurrence of high-harmonic forced resonance using structural modeling and a moving sprung-mass oscillator vehicle model. The results showed that high-harmonic forced resonance can significantly affect the investigated beams subjected to vehicle loads moving at specific low speeds.
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Jiayao Ni, Yanliang Zhang, Feng Ding, Xi-Sheng Zhan, Tasawar Hayat
Summary: This paper investigates the parameter estimation problem of a class of linear time-delay systems. Two-stage stochastic gradient and gradient-based iterative algorithms are developed, as well as a two-stage multi-innovation stochastic gradient and gradient-based iterative algorithm for improved estimation accuracy. The proposed algorithms are tested through two simulation examples.
Article
Engineering, Mechanical
Junqing Wu, Ling Hong, Jun Jiang
Summary: This paper reviews the multi-harmonic balance method (MHBM) and variable-coefficient harmonic balance method (VCHBM) and reveals their relationship in solving quasi-periodic solutions. Additionally, improved formulations for the alternating Frequency-Time method (AFT) and phase condition for arc-length continuation method (ALC) are proposed to enhance the efficiency and robustness of VCHBM.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Xianfei Chen, Yu Huang, Pengbo Wang, Houxiu Xiao, Zhaolun Deng, Zhenglei Wang, Donghui Xia, Tao Peng, Xiaotao Han
Summary: This article analyzes the effects of the nonlinear interaction between the electron beam and wave in harmonic gyrotrons. The study focuses on the impact of electron velocity spread and beam radius spread on mode excitation, interaction efficiency, and mode competition. The results show that proper design consideration of the interaction circuit can expand the effective operating region of the harmonic mode and control efficiency degradation. However, beam radius spread plays a major role in efficiency degradation and mode competition.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Engineering, Electrical & Electronic
Shrinath Kannan, Jan Meyer, Johan Rens, Peter Schegner
Summary: This article proposes a noninvasive harmonic resonance detection technique for public LV networks that relies only on the measurement of voltage and current at the LV busbar, and it can accurately and continuously track the different characteristics of harmonic resonances.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Mechanical
Qi Liu, Weiyang Qin, Yongfeng Yang, Zhiyong Zhou
Summary: One of the main challenges in vibration energy harvesting is improving the efficiency for low-frequency and weak ambient vibration. This paper proposes a novel harvester that enhances energy harvesting performance for weak ambient vibration by amplifying inertial force and utilizing multi-stability. The harvester consists of an inertial mass, two piezoelectric buckled beams, and two linkages. The results of experimental validation demonstrate that the harvester exhibits super-harmonic characteristics and is capable of generating a larger output for weak excitation.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Mathematics, Applied
Zhi Yan, Xianbin Liu
Summary: This study reports the theoretical and numerical investigation on the vibration mechanism at arbitrary fraction-order harmonic resonance of the fractional Mathieu-Duffing system driven by multiple periodic excitations with distributed delay. Precise numerical algorithm based on Caputo derivative definition is applied to obtain unified analytical results of the steady-state response amplitude. It is found that saddle-node bifurcation can occur in the steady-state amplitude due to different parametric settings in both high-frequency and low-frequency excitations. Additionally, a new multi-saddle-node bifurcation phenomenon has been discovered in the fractional-order system.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2021)
Article
Acoustics
Guo-Xu Wang, Hu Ding, Li-Qun Chen
Summary: This paper proposes a global control strategy for the primary system and absorber using the differential evolution algorithm, achieving decent vibration mitigation and decreasing the global response.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Acoustics
Sha Wei, Hu Ding, Zhike Peng, Li-Qun Chen
Summary: Modal parameter identification is crucial for tracking structural vibrations and evaluating structural performances in the field of vibration and control. This study proposes a novel parameter identification method based on ICCD and the Hilbert transform, which decomposes the measured response signal into intrinsic chirp components and identifies the instantaneous modal parameters of the system using the Hilbert transform. Comparison with another method validates the better identification ability of the proposed method in estimating the instantaneous natural frequency of the system in the presence of noise.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Acoustics
Si-Qin Ye, Hu Ding, Sha Wei, Jin-Chen Ji, Li-Qun Chen
Summary: This study investigates the non-linear forced vibration of a slightly curved pipe conveying supercritical fluid and finds that the initial curvature has a significant effect on the dynamic characteristics of the pipe.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Acoustics
Guifeng Wang, Yuanting Wei, Zhenyu Chen, C. W. Lim
Summary: Due to their great application potential in programmable wave transportation, topological metamaterials have received significant research attention in recent decades. This article presents an acoustic metamaterial composed of a perforated nylon substrate and a ceiled air-flowing channel. The resonance frequency and topological phases of the metamaterial are tuned by filling the holes arranged in a honeycomb lattice with water. By adjusting the height of water columns, two subwavelength bandgaps are opened, leading to controllable bandgap and topological phase transitions. The study explores the dependence of topological protected interface mode frequency and quality factor on water height and proposes a design strategy to obtain high-quality topological protected interface mode at the desired frequency. Additionally, the article demonstrates topological rainbow trapping to terminate waves at different frequencies and locations. The controllable bandgap and topological protected interface mode enable the design of topological structures with simpler structures and lower cost.
Article
Thermodynamics
Guifeng Wang, Fan Shi, Zhenyu Chen, Yue Yu, C. W. Lim
Summary: The interest in phononic crystals and acoustic metamaterials has been a hot topic in recent years. This study proposes a prestressed metamaterial beam with actively tunable piezoelectric springs attached to multiple local resonators. The theoretical analysis of the system is conducted using the Euler-Bernoulli beam theory and Timoshenko beam theory. The dispersion relation and transmission ratio are analytically computed using the spectral element method, and excellent agreement with the benchmark is reported. The paper also investigates the influence of external axial force, resonator number, and mass on the bandgap range and attenuation behavior, and demonstrates the active control of bandgap range and frequency.
CONTINUUM MECHANICS AND THERMODYNAMICS
(2023)
Article
Engineering, Civil
Chen Liang, Zhenyu Chen, Guifeng Wang, C. W. Lim
Summary: This study investigates the thermal vibration characteristics of sandwich cylindrical shells made of functionally graded materials (FGMs). The shells are modeled using the Kirchhoff-Love shell theory, accounting for porosity effects that vary with the mixing degree of constituent materials. The material properties are temperature-dependent and show graded variation along the thickness direction. Analytical solutions for the natural frequencies are determined and compared with numerical simulations and data from the open literature. The study comprehensively examines the effects of various parameters on the thermal vibration characteristics of the composite shell structures.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2023)
Article
Construction & Building Technology
Wisal Ahmed, C. W. Lim
Summary: The employment of recycled aggregate concrete (RAC) for sustainable infrastructure development has gained special interest due to the emphasis on resource conservation and environmental protection. This experimental study investigates the effect of elevated temperatures on the residual properties of RAC strengthened with chopped basalt fiber (BF) and pozzolana slurry treated recycled concrete aggregate (TRCA). The findings show significant enhancement in residual properties and improved matrix quality of the modified recycled concrete prepared by combined utilization of BF and TRCA.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Engineering, Mechanical
Bo Dou, Hu Ding, Xiao-Ye Mao, Hui-Rong Feng, Li-Qun Chen
Summary: In this study, a novel dynamic model of the retaining clip for pipes is proposed, which allows for more accurate description of the pipe's vibration when restrained by a clip. The research findings show that the clip parameters have a nonlinear influence on the pipe's natural frequencies, and neglecting the clip width or modeling it as a boundary will result in noticeable errors. The change in clip stiffness affects the symmetry of the modes and the number and locations of modal nodes, while increasing the clip thickness or width significantly alters the modal shapes of symmetric modes.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Mechanical
Wen-Hang Liu, Ze-Qi Lu, Rong-Biao Hao, Hu Ding, Li-Qun Chen
Summary: This study investigates the transverse vibration characteristics of an axially loaded beam using parallel-coupled nonlinear isolators to improve low-frequency vibration isolation. The nonlinear isolators employ double annular magnets and spiral springs to achieve high static and low dynamic stiffness suitable for low-frequency vibration isolation. A novel approach is proposed to analyze the frequency response functions of power flow for strongly nonlinear discrete and continuum coupled systems. The results demonstrate that the frequency response function of power flow can effectively deal with transverse vibrations in non-co-located excitation sources and isolation objects. The parallel-coupled nonlinear vibration isolator can decrease the energy transmission of high-order modal vibrations of the continuum, providing significant vibration suppression at low frequencies. Parametric studies show that increasing the beam length and initial axial force can reduce the resonant frequency and broaden the vibration isolation frequency band. An experiment is conducted to validate the accuracy of the theoretical model.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Mechanical
Xiao-Ye Mao, Jie Jing, Hu Ding, Li-Qun Chen
Summary: This study investigates the effects of gradient Young's modulus on the dynamics of pipes conveying fluid. A model is established to analyze the influence of Young's modulus gradient on the natural characteristics and the non-trivial equilibrium configuration. The results show that the gradually varied Young's modulus leads to an asymmetric non-trivial equilibrium configuration, and increasing gradient can raise the critical fluid velocity and weaken the vibration.
NONLINEAR DYNAMICS
(2023)
Article
Construction & Building Technology
Wisal Ahmed, C. W. Lim
Summary: Fiber hybridization is an effective method to enhance the mechanical properties and durability of recycled concrete. However, previous research mainly focuses on the basic mechanical properties and neglects the multicriteria-based performance assessment. In this study, eleven mix formulations with different fiber combinations and mineral admixtures were evaluated and compared. The results showed that mix formulations with hybrid fibers had significant improvements in compressive strength, splitting tensile strength, and flexural strength. The freeze-thaw assessment indicated that using hybrid fibers together with mineral admixtures resulted in superior durability performance. Cost analysis revealed that certain mix formulations had a higher net cost increase. The multicriteria analysis demonstrated that the hybrid fiber-based mix formulations had the best performance score and ranking.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Mechanical
You-cheng Zeng, Hu Ding, Jin-Chen Ji, Xing-Jian Jing, Li-Qun Chen
Summary: This paper proposes a new type of nonlinear energy sink (TNES) that can achieve different stable states by adjusting geometric parameters. The TNES has been shown to have better vibration reduction performance under strong excitation and can expand the effective range of vibration reduction.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Mechanical
Jia-Rui Yuan, Hu Ding
Summary: Due to the lack of advanced models and analytical methods, the study of pipe conveying fluid usually only considers the in-plane vibration of straight pipe. In order to fully understand the dynamic characteristics of curved pipe, a three-dimensional (3D) dynamic model based on the absolute nodal coordinate formulation (ANCF) is developed in this paper. The nonlinear dynamic equations of the pipe system are derived, and the natural frequencies and modes are calculated. The established model and method are verified and the effects of relevant parameters on the natural vibration of curved pipe are discussed.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Automation & Control Systems
Sun-Biao Li, Hu Ding
Summary: This study investigates the mechanical models of multiple NES cells coupled to linear oscillators and explores the impact of increasing the number of NES cells on the system's dynamic characteristics and vibration reduction performance. The results indicate that as the number of NES cells increases, the range of frequency islands in the system diminishes and the vibration reduction efficiency of the primary oscillator improves.
INTERNATIONAL JOURNAL OF DYNAMICS AND CONTROL
(2023)
Article
Acoustics
Meng-Yuan Hao, Hu Ding, Xiao-Ye Mao, Li-Qun Chen
Summary: This paper compares the characteristics of principal parametric resonance and combination resonance under parametric excitation for the first time. A dynamic model and equation are established, and numerical verification and analysis show that combination resonance may be more destructive than principal parametric resonance. Certain parameters can also affect the stability of the pipe.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Sandip Chajjed, Mohammad Khalil, Dominique Poirel, Chris Pettit, Abhijit Sarkar
Summary: This paper reports the generalization of the Bayesian formulation of the flutter margin method, which improves the predictive performance by incorporating the joint prior of aeroelastic modal parameters. The improved algorithm reduces uncertainties in predicting flutter speed and can cut cost by reducing the number of flight tests.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Pascal Zeise, Bernhard Schweizer
Summary: Air ring bearings are an improved version of classical air bearings, providing better damping behavior and allowing operation above the linear threshold speed of instability. However, there is a risk of dangerous vibrations in certain rotor systems, which can be addressed by considering ring tilting effects.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Zbynek Sika, Jan Krivosej, Tomas Vyhlidal
Summary: This paper presents a novel design of a compact six degrees of freedom active vibration absorber with six identical eigenfrequencies. The objective is to completely suppress the vibration of a machine structure with six motion components. By utilizing a Stewart platform structure equipped with six active legs, a spatial unifrequency absorber with six identical eigenfrequencies is achieved. The design is optimized using a correction feedback and active delayed resonator feedback.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Kai Li, Yufeng Liu, Yuntong Dai, Yong Yu
Summary: This paper presents a novel light-powered self-oscillating liquid crystal elastomer (LCE) bow that can self-oscillate continuously and periodically under steady illumination. The dynamics of the LCE bow are theoretically investigated and numerical calculations predict its motion regimes. The suggested LCE bow offers potential advantages in terms of simple structure, customizable size, flexible regulation, and easy assembly.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Carmelo Rosario Vindigni, Giuseppe Mantegna, Calogero Orlando, Andrea Alaimo
Summary: In this study, a simple adaptive flutter suppression system is designed to increase the operative speed range of a wing-aileron aeroelastic plant. The system achieves almost strictly passivity by using a parallel feed-forward compensator implementation and the controller parameters are optimized using a population decline swarm optimization algorithm. Numerical simulations prove the effectiveness of the proposed simple adaptive flutter suppression architecture in different flight scenarios.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Nicco Ulbricht, Alain Boldini, Peng Zhang, Maurizio Porfiri
Summary: The quantification of fluid-structure interactions in marine structures is crucial for their design and optimization. In this study, an analytical solution for the free vibration of a bidirectional composite in contact with a fluid is proposed. By imposing continuity conditions and boundary conditions, the coupled fluid-structure problem is solved and applied to sandwich structures in naval construction, offering insights into the effects of water on mode shapes and through-the-thickness profiles of displacement and stress.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Shahram Hadian Jazi, Mostafa Hadian, Keivan Torabi
Summary: Non-uniformity and damage are the main focus in studying vibrations of beam elements. An exact closed-form explicit solution for the transverse displacement of a nonuniform multi-cracked beam is introduced using generalized functions and distributional derivative concepts. By introducing non-dimensional parameters, the motion equation and its closed-form solution are obtained based on four fundamental functions. The impact of crack count, location, intensity, and boundary conditions on natural frequency and mode shape is evaluated through numerical study.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Eugenio Tramacere, Marius Pakstys, Renato Galluzzi, Nicola Amati, Andrea Tonoli, Torbjoern A. Lembke
Summary: This paper proposes the experimental stabilization of electrodynamic maglev systems by means of passive components, providing key technological support for the Hyperloop concept of high-speed and sustainable transportation.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Pengfei Deng, Xing Tan, He Li
Summary: In this paper, the authors improve the surface morphology method and study the bit-rock interaction model between the rock and the PDC bit, taking into account the impact of blade shape and cutter arrangement. They establish a dynamic model for a deep drilling system equipped with an arbitrary shape PDC bit and propose a stability prediction method. The results show that the shape of the blades and arrangement of the cutters on the PDC bit significantly affect the nonlinear vibration of the drilling system.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Salvador Rodriguez-Blanco, Javier Gonzalez-Monge, Carlos Martel
Summary: In modern LPT designs, the simultaneous presence of forced response and flutter in different operation regimes is unavoidable. Recent evidence suggests that the traditional linear superposition method may be overly conservative. This study examines the flutter and forced response interaction in a realistic low pressure turbine rotor and confirms that the actual response is much smaller than that predicted by linear superposition.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Kabilan Baskaran, Nur Syafiqah Jamaluddin, Alper Celik, Djamel Rezgui, Mahdi Azarpeyvand
Summary: This study investigates the impact of the number of blades on the aeroacoustic characteristics and aerodynamic performance of propellers used in urban air mobility vehicles. The results show that different blade numbers exhibit distinct noise levels, providing valuable insights for further research on propeller noise and aerodynamic performance.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Yongbo Peng, Peifang Sun
Summary: This study focuses on the reliability-based design optimization (RBDO) of the tuned mass-damper-inerter (TMDI) system under non-stationary excitations. The performance of the optimized TMDI system is evaluated using probability density evolution analysis. The results demonstrate the technical advantages of TMDI, including high vibration mitigation performance, considerable mass reduction, and less stroke demand.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Guanfu Lin, Zhong-Rong Lu, Jike Liu, Li Wang
Summary: Vision-based measurement is an emerging method that enables full-field measurement with non-contact and high spatial resolution capabilities. This paper presents a single-camera method for measuring out-of-plane vibration of plate structures using motion-parametric homography to capture image variation and displacement response.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Bronislaw Czaplewski, Mateusz Bocian, John H. G. Macdonald
Summary: Despite two decades of study, there is currently no model that can quantitatively explain pedestrian-generated lateral forces. This research proposes a foot placement control law based on empirical data to calibrate and generalize the rigid-leg inverted pendulum model (IPM) for predicting lateral structural stability.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Justine Carpentier, Jean-Hugh Thomas, Charles Pezerat
Summary: This paper proposes an improved method for the identification of vibration sources on a car window using the corrected force analysis technique. By redefining inverse methods in polar coordinates, more accurate results can be obtained.
JOURNAL OF SOUND AND VIBRATION
(2024)
