Journal of Sound and Vibration最新文献_第3页

Synthetically-trained neural networks for shape classification from measured acoustic scattering 基于测量声散射的形状分类的综合训练神经网络

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-06-09 DOI: 10.1016/j.jsv.2025.119229

Ganesh U. Patil, Hyung-Suk Kwon, Bogdan I. Epureanu, Bogdan-Ioan Popa

{"title":"Synthetically-trained neural networks for shape classification from measured acoustic scattering","authors":"Ganesh U. Patil, Hyung-Suk Kwon, Bogdan I. Epureanu, Bogdan-Ioan Popa","doi":"10.1016/j.jsv.2025.119229","DOIUrl":"10.1016/j.jsv.2025.119229","url":null,"abstract":"<div><div>Drawing inspiration from the biological phenomenon of echolocation, ultrasound perception holds immense potential across various engineering domains, spanning from advanced imaging to precise navigation. Despite advances in sensor development and signal processing, current methodologies struggle to match the remarkable perceptual acuity of echolocating animals when deciphering real-world ultrasound echoes. In this study, we bridge this disparity by harnessing Convolutional Neural Networks (CNNs) to discern ultrasound scattering from objects of different shapes. Our novel approach entails training CNNs using exclusively synthetic data, derived from numerical simulations, to process real echoes. We achieve this through (1) sophisticated data augmentation and processing of synthetic echoes that accommodate physical variations and uncertainties inherent in practical scenarios and (2) specialized CNNs (SCNNs) targeted at each shape to compel models to learn features unique to that shape. Rigorous experimentation demonstrates the ability of these synthetically-trained models to accurately classify fundamental geometric shapes of objects based solely on experimentally measured echoes. Furthermore, the intentional selection of the size and shapes of the objects to produce perceptually similar echoes elucidates the efficacy of our approach in handling intricate perception scenarios. By alleviating laborious and costly data acquisition procedures in favor of synthetic data-driven training for real-world perception, our method opens avenues for advancements in diverse fields reliant on ultrasound-based technologies. These advancements bear implications spanning from diagnostics to the realm of autonomous systems and beyond.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119229"},"PeriodicalIF":4.3,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coupled piezoelastic airfoil oscillators: Nonlinear oscillations 耦合压电弹性翼型振荡器：非线性振荡

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-06-06 DOI: 10.1016/j.jsv.2025.119226

Nishant Nemani , Sergio Preidikman , Balakumar Balachandran

{"title":"Coupled piezoelastic airfoil oscillators: Nonlinear oscillations","authors":"Nishant Nemani , Sergio Preidikman , Balakumar Balachandran","doi":"10.1016/j.jsv.2025.119226","DOIUrl":"10.1016/j.jsv.2025.119226","url":null,"abstract":"<div><div>Limit-cycle oscillations of bodies with airfoil cross-sections is a subject of keen interest for engineering applications. In systems consisting of multiple such closely spaced bodies, the aerodynamic interactions amongst two or more such bodies can influence the system response. The nature of these interactions is examined with respect to variations in external parameters such as freestream speed and system parameters such as inter-oscillator spacing and the number of airfoil oscillators. By using a co-simulation scheme, which consists of a reduced order three degree-of-freedom piezostructural system and an unsteady vortex lattice method fluid solver, the effects of these parameters on the resulting aerodynamic loads on the system, the overall dynamic response, and the critical flutter speed are studied. In a three-airfoil oscillator system, the effect of the position of the inner airfoil oscillator is extensively studied with a focus on characterizing airfoil interactions and airfoil-wake interactions. For different parallel configurations, studies of bifurcations with respect to different control parameters are conducted.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119226"},"PeriodicalIF":4.3,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Weak stiffness-induced regulation of strongly directional waveguides in anti-tetrachiral spiral metamaterials 反四手螺旋超材料中强定向波导的弱刚度诱导调节

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-06-06 DOI: 10.1016/j.jsv.2025.119290

J.C. Guo , J.R. Li , J. Zhao , Z. Zhang

{"title":"Weak stiffness-induced regulation of strongly directional waveguides in anti-tetrachiral spiral metamaterials","authors":"J.C. Guo , J.R. Li , J. Zhao , Z. Zhang","doi":"10.1016/j.jsv.2025.119290","DOIUrl":"10.1016/j.jsv.2025.119290","url":null,"abstract":"<div><div>In-plane weak stiffness and low-frequency strong directional wave regulation at high tensile strains are key considerations for engineering applications. To overcome this problem, a novel anti-tetrachiral spiral metamaterial with low-frequency wave regulation under high tensile strain is designed by introducing Archimedean spiral holes into the perforated plate. The wave attenuation properties and Poisson's ratio characteristics of the proposed anti-tetrachiral spiral metamaterial are investigated through numerical simulations and experimental testing of prototype samples fabricated by additive manufacturing. The results show that weak stiffness is the key factor contributing to the low-frequency bandgap (BG) and zero Poisson's ratio (ZPR) characteristics. The Bragg-type and local resonance-type wave can be interconverted by regulating the stiffness to possess the low-frequency strong wave attenuation capability. The BG frequency of the proposed metamaterial is reduced to 7.88 ‰ of a conventional perforated plate, and its tensile stiffness and maximum mises stress are reduced to 0.23 ‰ and 12.12 ‰ of a conventional perforated plate. Furthermore, the design of four types of waveguide paths with negligible susceptibility to tensile deformation. ZPR structures at weak stiffness have strong directional wave regulation capability in the low-frequency domains, which enables stable wave transport properties independent of tensile deformation. The designed ZPR structures with low in-plane stiffness and low-frequency BG characteristics as well as the strong directional wave regulation are expected to play a key role in the design of future high-performance waveguide devices and tunable BG materials.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119290"},"PeriodicalIF":4.3,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reduced-order analysis and data reconstruction of airfoil turbulent acoustic signals using proper orthogonal decomposition and higher-order dynamic mode decomposition 采用适当的正交分解和高阶动态模态分解对翼型湍流声信号进行降阶分析和数据重构

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-06-06 DOI: 10.1016/j.jsv.2025.119286

Pengfei Ma , Lei Li , Bin Wang , Haifeng Wang , Tong Lin , Yu Liu

{"title":"Reduced-order analysis and data reconstruction of airfoil turbulent acoustic signals using proper orthogonal decomposition and higher-order dynamic mode decomposition","authors":"Pengfei Ma , Lei Li , Bin Wang , Haifeng Wang , Tong Lin , Yu Liu","doi":"10.1016/j.jsv.2025.119286","DOIUrl":"10.1016/j.jsv.2025.119286","url":null,"abstract":"<div><div>This study employs Higher-Order Dynamic Mode Decomposition (HODMD) and Proper Orthogonal Decomposition (POD) to analyze turbulent flow noise characteristics of a Clark-Y airfoil at <em>Rec</em> = 10⁵. By decomposing sound pressure signals, different frequency, direction, and amplitude components of sound waves are extracted for in-depth acoustic analysis. CFD simulations using LES with the WALE model reveal that laminar separation bubbles form at <em>x</em>/<em>c</em> = 0.28 and reattach at <em>x</em>/<em>c</em> = 0.45, generating a turbulent boundary layer and strong pressure fluctuations, identified as the primary source of low-frequency discrete noise. Modal decomposition and reconstruction of experimental sound pressure data across various angles of attack compare HODMD and POD in handling flow-induced noise. Results indicate HODMD effectively extracts dominant frequencies and high-frequency modal structures, while POD, though efficient in energy decomposition, suffers from mode mixing and lacks interpretability in high-frequency noise scenarios. By integrating Sound Pressure Level (SPL) analysis with HODMD, key frequencies associated with boundary layer transition noise are identified, revealing their time-evolution characteristics. The study highlights HODMD’s superiority in capturing dynamic evolution and stable modes of airfoil noise, providing valuable insights for aeroacoustic noise prediction and control strategies.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"618 ","pages":"Article 119286"},"PeriodicalIF":4.3,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compound nonlinear energy sink with multiple motion types for absorbing energy from wide excitation ranges 具有多种运动类型的复合非线性能量汇，可吸收宽激励范围的能量

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-06-03 DOI: 10.1016/j.jsv.2025.119273

Jianen Chen , Jiaqi Zhao , Wei Zhang , Min Sun

{"title":"Compound nonlinear energy sink with multiple motion types for absorbing energy from wide excitation ranges","authors":"Jianen Chen , Jiaqi Zhao , Wei Zhang , Min Sun","doi":"10.1016/j.jsv.2025.119273","DOIUrl":"10.1016/j.jsv.2025.119273","url":null,"abstract":"<div><div>Nonlinear energy sink (NES) has garnered significant attention since its inception due to its notable broadband vibration reduction capability. However, the introduction of strong nonlinear characteristics by NESs complicates system responses, leading to a loss of effectiveness when the excitation force exceeds a specific threshold. Consequently, NESs have limited applicability in engineering because they are effective only within a constrained range of excitation amplitude. In this study, a compound NES (CNES) with multiple motion types is designed to extend the effective force range while maintaining broadband vibration reduction capability. The CNES is distinguished by its piecewise stiffness, collision mechanisms, and unique design of two-degree-of-freedom oscillators. The wide effective range of the CNES is demonstrated through slow linear sweep and fixed-frequency tests. The results indicate that the CNES effectively reduces vibrations in the primary oscillator (PO) with various resonant frequencies. Notably, the CNES achieves significant vibration reduction over a particularly wide range of excitation amplitude when controlling the PO with relatively high resonance frequencies (approximately 10.5 Hz and 19 Hz). However, a nonnegligible limitation of the CNES is its restricted effective range of excitation amplitude when the PO resonates at lower frequency (approximately 7 Hz). Moreover, five motion types of the CNES are identified and analyzed, with one motion type autonomously emerging in response to changes in excitation parameters, ensuring excellent vibration reduction performance across a wide excitation range. Finally, the performance of the CNES and a degraded single-degree-of-freedom CNES are compared to further demonstrate the extension effect of the multiple motion types on the effective range. The CNES can be used in scenarios where the parameters of protected systems and excitations vary widely, providing a thought to improve the NESs.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119273"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An original modeling method of velocity-dependent mesh stiffness for spur gear system with centrifugal effect 一种具有离心效应的直齿轮系统速度相关啮合刚度建模方法

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-06-03 DOI: 10.1016/j.jsv.2025.119210

Guoyin Mo , Lili Zhang , Yanan Shi , Hongguan Li , Guangshui Tong , Guangbin Yu , Penghao Duan , Jielu Zhang , Hanjun Jiang , Dayi Qu , Fuhao Liu

{"title":"An original modeling method of velocity-dependent mesh stiffness for spur gear system with centrifugal effect","authors":"Guoyin Mo , Lili Zhang , Yanan Shi , Hongguan Li , Guangshui Tong , Guangbin Yu , Penghao Duan , Jielu Zhang , Hanjun Jiang , Dayi Qu , Fuhao Liu","doi":"10.1016/j.jsv.2025.119210","DOIUrl":"10.1016/j.jsv.2025.119210","url":null,"abstract":"<div><div>The driving speed and related centrifugal effects are major in determining mesh stiffness during the gear meshing process. However, many researchers commonly ignore these factors. In this work, an original computational algorithm (OCA) based on Euler beam theory that considers the centrifugal effect is presented for calculating the velocity-dependent time-varying mesh stiffness (VMS) of spur gears. Comparisons with the findings of finite element analysis (FEA) are used to verify the accuracy of the OCA. This study employs driving speed as the control parameter and analyzes the VMS in both the time and frequency domains. Furthermore, it investigates the effects of centrifugal force on the VMS across different materials. The results show that the driving speed affects both the VMS and the natural frequencies of gear pairs. It is noteworthy that while higher-density materials have the opposite effect, materials with a high elastic modulus tend to lessen the effect of driving speed on VMS. Further investigation into the noise and vibrations in gears caused by centrifugal effects can be theoretically supported by the findings presented in this work.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119210"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hopf bifurcation analysis and control of actuated wheelset under delayed linear and nonlinear feedback 时滞线性和非线性反馈下驱动轮对的Hopf分岔分析与控制

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-06-02 DOI: 10.1016/j.jsv.2025.119216

Peng Guo, Jing Zeng

{"title":"Hopf bifurcation analysis and control of actuated wheelset under delayed linear and nonlinear feedback","authors":"Peng Guo, Jing Zeng","doi":"10.1016/j.jsv.2025.119216","DOIUrl":"10.1016/j.jsv.2025.119216","url":null,"abstract":"<div><div>This paper investigates the hunting bifurcation behavior of an actuated railway wheelset under delayed linear and nonlinear yaw feedback control. The control force applied by the actuator is described as a delayed polynomial function of the state variables. First, the local stability and the occurrence of Hopf bifurcation are considered by treating the time delay as a bifurcation parameter and analyzing the associated characteristic equation. The explicit formulae are then derived to determine the direction of Hopf bifurcation and the stability of bifurcated periodic solutions using the normal form theory and center manifold theorem. The impact of changes in individual variables on the critical time delay is discussed within a specified range. Finally, the effects of time delay and feedback control gains on the Hopf bifurcation point, type of bifurcation, and limit cycle amplitude are thoroughly examined. Numerical simulations conducted via the continuation package DDE-BIFTOOL validate the theoretical analysis results. Our findings demonstrate that the optimal combination of linear and nonlinear velocity control gains enhances hunting stability by delaying Hopf bifurcation and mitigating hunting oscillations.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119216"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A matrix method for designing bandgap of stretch-dominated mechanical metamaterials 基于矩阵法的拉伸机械超材料带隙设计

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-06-02 DOI: 10.1016/j.jsv.2025.119257

Zijian Wang, Hua Deng, Hongchuang Liu

{"title":"A matrix method for designing bandgap of stretch-dominated mechanical metamaterials","authors":"Zijian Wang, Hua Deng, Hongchuang Liu","doi":"10.1016/j.jsv.2025.119257","DOIUrl":"10.1016/j.jsv.2025.119257","url":null,"abstract":"<div><div>The dynamic equation in matrix form is established for the unit cell of stretch-dominated mechanical metamaterials, which is modelled as a pin-bar structure. By condensing the degrees of freedom of equivalent nodes by introducing Bloch’s theorem, the dynamic equation is transformed into a generalized characteristic equation for solving the dispersion function of metamaterials. It is proven that the necessary condition for a bandgap to exist is that the number of inequivalent nodes of the metamaterial is greater than 1 by analysing the generalized characteristic equation. The formula for calculating the number of inequivalent nodes is given, which indicates that it can generally be increased either by inserting nodes or by redefining the unit cell. Based on matrix perturbations and the gradient descent method, a numerical strategy is proposed to generate a bandgap with an expected width or range by optimizing the element cross-sectional areas and node coordinates of the unit cell. The degenerate points of the dispersion function can also be eliminated by using matrix perturbations. Two metamaterials are employed as examples to verify the validity of the proposed method. The prescribed bandgaps are generated by increasing the number of inequivalent nodes and optimizing the element cross-sectional areas and node coordinates.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119257"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Forced vibration analysis of an axially moving and spinning drill string system based on Green’s functions 基于格林函数的轴向旋转钻柱系统强迫振动分析

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-06-01 DOI: 10.1016/j.jsv.2025.119245

Xiang Zhao , Wenjie Li , Weidong Zhu , Dan Gan , Hongjun Zhu , Xueping Chang , Mingze Yuan , Yinghui Li

{"title":"Forced vibration analysis of an axially moving and spinning drill string system based on Green’s functions","authors":"Xiang Zhao , Wenjie Li , Weidong Zhu , Dan Gan , Hongjun Zhu , Xueping Chang , Mingze Yuan , Yinghui Li","doi":"10.1016/j.jsv.2025.119245","DOIUrl":"10.1016/j.jsv.2025.119245","url":null,"abstract":"<div><div>A drill string is a critical structural component in the petroleum industry, subject to various influences such as high temperature, high pressure, torsional forces, drilling fluids, and frictional interaction at the drill bit during operation, especially the frictional interaction at the drill bit, which produces complex friction torques or forces that could induce stick-slip vibrations and complicated nonlinear vibrations of the drilling string. This paper formulated a systematically novel nonlinear dynamic model of a drill string that considered combined effects of axially moving and spinning motions, the frictional interaction at the drill bit, and internal and external drilling fluid circulation. For the aim of investigating the combined effects of axially moving and spinning motions, a degenerated linear dynamic model of the axially moving and spinning drill string (ASDS) is studied analytically. A novel aspect of this work is that firstly the effects of axially moving and spinning motions, with both internal and external drilling fluid circulation on forced vibration of the drill string are all considered. The extended Hamilton principle is used to establish the systematical nonlinear dynamic model of the drill string. The Green’s function and the Laplace transform are then applied to obtain the fundamental solution of the vibration equation, which is general and can be adapted to various boundary conditions. In the numerical results section, the effectiveness of the proposed method is validated by comparing it with existing results from references. The influence of factors such as axially moving velocity, spinning velocity, internal drilling fluid velocity, and the viscous damping coefficient on the vibration response of the drill string is discussed, providing a theorewtical basis for the vibration control of drill strings.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119245"},"PeriodicalIF":4.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of dynamic pull-in for lumped MEMS model of atomic force microscope with constant magnetic excitation 恒磁激励原子力显微镜集总MEMS模型的动态拉入分析

IF 4.3 2区工程技术

Journal of Sound and Vibration Pub Date : 2025-05-30 DOI: 10.1016/j.jsv.2025.119215

Piotr S. Skrzypacz , Piotr A. Putek , Bartosz Cz. Pruchnik , Alkham Turganov , Grant A. Ellis , Teodor P. Gotszalk

{"title":"Analysis of dynamic pull-in for lumped MEMS model of atomic force microscope with constant magnetic excitation","authors":"Piotr S. Skrzypacz , Piotr A. Putek , Bartosz Cz. Pruchnik , Alkham Turganov , Grant A. Ellis , Teodor P. Gotszalk","doi":"10.1016/j.jsv.2025.119215","DOIUrl":"10.1016/j.jsv.2025.119215","url":null,"abstract":"<div><div>We study the dynamical behavior of electromagnetically actuated MEMS cantilevers used in atomic force microscopy (AFM) in the non-contact working state. The nonlinear nature of the MEMS sensor’s tip-sample interaction, considered in the dynamic operation mode, must be appropriately modeled due to the van der Waals-type attraction/repulsion force. The resulting one-degree-of-freedom lumped parameter model constitutes the initial value problem for singular oscillator equation. The occurrence of pull-in solutions for this model with one magnetic excitation parameter is thoroughly analyzed. In particular, due to the Lorentz force-based electromagnetic actuation, we investigate two dynamic pull-in scenarios corresponding to a nonlinear system for which pull-in thresholds are analytically determined. Moreover, sufficient conditions for occurrence of pull-in or oscillatory solutions are rigorously derived and validated numerically. These results generalize those given previously, and can be useful for designing single-degree-of-freedom models of electromagnetically actuated MEMS cantilevers. Finally, we present and discuss a comparison between experimental data and theoretical predictions for a defined benchmark case.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"617 ","pages":"Article 119215"},"PeriodicalIF":4.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0