Pub Date : 2025-12-27DOI: 10.1016/j.jsv.2025.119623
Jiasen Wei , Sadaf Arabi
{"title":"Corrigendum to “Effects of non-uniform temperature field, mean flow, and noise on nonlinear thermoacoustic instabilities” [Journal of Sound and Vibration 624 (2026) 119498]","authors":"Jiasen Wei , Sadaf Arabi","doi":"10.1016/j.jsv.2025.119623","DOIUrl":"10.1016/j.jsv.2025.119623","url":null,"abstract":"","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"626 ","pages":"Article 119623"},"PeriodicalIF":4.9,"publicationDate":"2025-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839604","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}
Pub Date : 2025-12-27DOI: 10.1016/j.jsv.2025.119624
Roshan S. Kaundinya , Alice Marraffa , Zhenwei Xu , Shobhit Jain , George Haller
{"title":"Corrigendum to “Nonlinear Model Reduction to Random Spectral Submanifolds in Random Vibrations” [J. Sound Vib. 600 (2025), 118923]","authors":"Roshan S. Kaundinya , Alice Marraffa , Zhenwei Xu , Shobhit Jain , George Haller","doi":"10.1016/j.jsv.2025.119624","DOIUrl":"10.1016/j.jsv.2025.119624","url":null,"abstract":"","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"626 ","pages":"Article 119624"},"PeriodicalIF":4.9,"publicationDate":"2025-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881806","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}
Pub Date : 2025-12-24DOI: 10.1016/j.jsv.2025.119620
Bing Zhu, Wen Zhang, Xianrui Wang, Jingdong Chen
{"title":"Corrigendum to “Pseudo-intensity vector based sound speed measurement in indoor environments and its application to beamforming calibration” [Journal of Sound and Vibration, 625 (2026), 1–13/119561]","authors":"Bing Zhu, Wen Zhang, Xianrui Wang, Jingdong Chen","doi":"10.1016/j.jsv.2025.119620","DOIUrl":"10.1016/j.jsv.2025.119620","url":null,"abstract":"","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"626 ","pages":"Article 119620"},"PeriodicalIF":4.9,"publicationDate":"2025-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145808331","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}
Pub Date : 2025-12-23DOI: 10.1016/j.jsv.2025.119626
Yongbu Jin, Dong Wang, Di Yuan, Yihan Du, Qiang Wan
A non-invasive methodology for analyzing the nonlinear dynamic response of compressible constrained layer damping (CCLD) is developed within a finite element framework. The key to the proposed method lies in replacing the joint with a novel frequency- and load-dependent virtual material model and extracting model parameters using geometry-independent mapping equations. The CCLD’s frequency response is strongly influenced by the excitation level and design parameters. These effects are tested and simulated on a structure designated as "Pre-tighten Shear". In the experimental section, the effects of excitation, compression level, and silicone foam thickness on the nonlinear behavior of the CCLD over a wide frequency range are investigated. In the numerical simulation, a proposed finite element–based model is employed to analyze the structure. The validity of the method was verified through experimental comparisons, with the MSE not exceeding 4E-03. In addition, the results show that the use of mapping equations offers higher computational efficiency than the classical approach, achieving faster parameter updates at a rate of >60%. A comparison between the simulation and experimental results indicates that interface sliding reduces the stiffness of the joints, with a maximum change in joint damping of about 65%.
{"title":"Nonlinear vibration analysis of compressible constrained layer damping using a frequency- and load-dependent virtual material","authors":"Yongbu Jin, Dong Wang, Di Yuan, Yihan Du, Qiang Wan","doi":"10.1016/j.jsv.2025.119626","DOIUrl":"10.1016/j.jsv.2025.119626","url":null,"abstract":"<div><div>A non-invasive methodology for analyzing the nonlinear dynamic response of compressible constrained layer damping (CCLD) is developed within a finite element framework. The key to the proposed method lies in replacing the joint with a novel frequency- and load-dependent virtual material model and extracting model parameters using geometry-independent mapping equations. The CCLD’s frequency response is strongly influenced by the excitation level and design parameters. These effects are tested and simulated on a structure designated as \"Pre-tighten Shear\". In the experimental section, the effects of excitation, compression level, and silicone foam thickness on the nonlinear behavior of the CCLD over a wide frequency range are investigated. In the numerical simulation, a proposed finite element–based model is employed to analyze the structure. The validity of the method was verified through experimental comparisons, with the MSE not exceeding 4E-03. In addition, the results show that the use of mapping equations offers higher computational efficiency than the classical approach, achieving faster parameter updates at a rate of >60%. A comparison between the simulation and experimental results indicates that interface sliding reduces the stiffness of the joints, with a maximum change in joint damping of about 65%.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"626 ","pages":"Article 119626"},"PeriodicalIF":4.9,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881805","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}
Pub Date : 2025-12-22DOI: 10.1016/j.jsv.2025.119622
Haining Li , Kefu Liu , Jian Deng
This study proposes a magnetically enhanced piecewise-linear nonlinear energy sink (MPLNES) for simultaneous vibration suppression (VS) and energy harvesting (EH). The MPLNES integrates a small mass, a piecewise-linear spring (PLS), a grounded magnetic spring (GMS), and a grounded electromagnetic energy harvester (EMEH). Two-variable models are developed to characterize the restoring force of the GMS and the transduction factor of the EMEH. Comparative analyses of the MPLNES and a conventional piecewise-linear NES (PLNES) are conducted using time responses, wavelet spectra, and frequency-energy plots. Results show that the MPLNES outperforms the PLNES, particularly at low initial energy levels, due to the GMS-induced dynamic shift of the NES equilibrium position, which promotes earlier nonlinear engagement and lowers the TET threshold. A two-objective optimization further identifies optimal initial energies and load resistances for three NES configurations, demonstrating that the MPLNES provides robust VS and EH performance across varying energy levels, with the PLS playing a key role in sustaining TET. Experimental validations agree well with simulations, confirming the effectiveness of the MPLNES for dual-function applications.
{"title":"A magnetically enhanced piecewise-linear nonlinear energy sink: Transient responses","authors":"Haining Li , Kefu Liu , Jian Deng","doi":"10.1016/j.jsv.2025.119622","DOIUrl":"10.1016/j.jsv.2025.119622","url":null,"abstract":"<div><div>This study proposes a magnetically enhanced piecewise-linear nonlinear energy sink (MPLNES) for simultaneous vibration suppression (VS) and energy harvesting (EH). The MPLNES integrates a small mass, a piecewise-linear spring (PLS), a grounded magnetic spring (GMS), and a grounded electromagnetic energy harvester (EMEH). Two-variable models are developed to characterize the restoring force of the GMS and the transduction factor of the EMEH. Comparative analyses of the MPLNES and a conventional piecewise-linear NES (PLNES) are conducted using time responses, wavelet spectra, and frequency-energy plots. Results show that the MPLNES outperforms the PLNES, particularly at low initial energy levels, due to the GMS-induced dynamic shift of the NES equilibrium position, which promotes earlier nonlinear engagement and lowers the TET threshold. A two-objective optimization further identifies optimal initial energies and load resistances for three NES configurations, demonstrating that the MPLNES provides robust VS and EH performance across varying energy levels, with the PLS playing a key role in sustaining TET. Experimental validations agree well with simulations, confirming the effectiveness of the MPLNES for dual-function applications.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"626 ","pages":"Article 119622"},"PeriodicalIF":4.9,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881807","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}
Unlike conventional geometric-throat configurations, thermal-throat choking is induced by volumetric heat addition from a flame, making this approach well suited to dual-mode ramjet applications. Such configurations, however, are potentially sensitive to combustion instabilities that can develop in the combustor, leading to the generation of acoustic and entropy waves which interact with the thermal throat, the outlet acoustic boundary condition. To study this interaction, the linear response of the thermal throat to acoustic or entropy plane-wave forcing is analyzed for five distinct configurations, highlighting several key findings. (i) The characterization of both acoustic-reflection and entropy-noise-production coefficients, along with the critical-throat boundary condition, reveals distinct acoustic behaviors influenced by the heat-release profile, heat-addition and geometric effects. (ii) A comparison between thermal and geometrical nozzles shows that thermally-choked configurations exhibit significantly lower acoustic-reflection coefficients at low frequencies. This acoustic damping is shown to result from the conversion of acoustic waves into entropy waves in the divergent duct, caused by the static temperature gradient. The entropy-noise-production coefficient of thermally-choked nozzle remains close to that of the isentropic configuration. (iii) A quasi-steady-state analytical model is also developed to predict the aeroacoustic reflection coefficients at very low frequencies for a thermal throat at the end of a straight tube. (iv) Additionally, the commonly used assumption of zero Mach-number fluctuations for geometric throat () is critically evaluated and shown to be valid only for isentropic flow in a geometric throat configuration. With a thermal throat, the Mach-number fluctuations at the throat position are shown to be mainly driven by the heat-release profile. (v) At high frequencies, all choking configurations asymptotically converge to an isentropic simple-wave acoustic-radiation behavior.
{"title":"On the linear aeroacoustic response of a thermally-choked-flow nozzle to acoustic and entropy plane waves","authors":"Frédéric Olivon , Aurelien Genot , Jean-Étienne Durand , Avraham Hirschberg , Estelle Piot","doi":"10.1016/j.jsv.2025.119619","DOIUrl":"10.1016/j.jsv.2025.119619","url":null,"abstract":"<div><div>Unlike conventional geometric-throat configurations, thermal-throat choking is induced by volumetric heat addition from a flame, making this approach well suited to dual-mode ramjet applications. Such configurations, however, are potentially sensitive to combustion instabilities that can develop in the combustor, leading to the generation of acoustic and entropy waves which interact with the thermal throat, the outlet acoustic boundary condition. To study this interaction, the linear response of the thermal throat to acoustic or entropy plane-wave forcing is analyzed for five distinct configurations, highlighting several key findings. (i) The characterization of both acoustic-reflection and entropy-noise-production coefficients, along with the critical-throat boundary condition, reveals distinct acoustic behaviors influenced by the heat-release profile, heat-addition and geometric effects. (ii) A comparison between thermal and geometrical nozzles shows that thermally-choked configurations exhibit significantly lower acoustic-reflection coefficients at low frequencies. This acoustic damping is shown to result from the conversion of acoustic waves into entropy waves in the divergent duct, caused by the static temperature gradient. The entropy-noise-production coefficient of thermally-choked nozzle remains close to that of the isentropic configuration. (iii) A quasi-steady-state analytical model is also developed to predict the aeroacoustic reflection coefficients at very low frequencies for a thermal throat at the end of a straight tube. (iv) Additionally, the commonly used assumption of zero Mach-number fluctuations for geometric throat (<span><math><mrow><msubsup><mi>M</mi><mo>*</mo><mo>′</mo></msubsup><mo>=</mo><mn>0</mn></mrow></math></span>) is critically evaluated and shown to be valid only for isentropic flow in a geometric throat configuration. With a thermal throat, the Mach-number fluctuations at the throat position are shown to be mainly driven by the heat-release profile. (v) At high frequencies, all choking configurations asymptotically converge to an isentropic simple-wave acoustic-radiation behavior.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"626 ","pages":"Article 119619"},"PeriodicalIF":4.9,"publicationDate":"2025-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881720","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}
Pub Date : 2025-12-20DOI: 10.1016/j.jsv.2025.119618
Yunhao Zhang , Daiki Sato , Yinli Chen , Jinhua She , Kou Miyamoto
Linear quadratic regulator (LQR) control has been widely demonstrated to be suitable and effective for active base-isolated buildings. However, its application to the buildings equipped with nonlinear dampers remains challenging due to the theoretical and design complexity. This paper presents a simple response-spectra-based design method for LQR control of active base-isolated buildings with bilinear oil dampers (BODs). First, a gain-scheduling-based LQR (GSLQR) control algorithm is presented to accommodate BODs. The GSLQR controller is defined as a total controller composed of BODs as the passive part and a gain-scheduling (GS) controller as the active part. This separates BODs from the plant, thereby transforming the control of a nonlinear system into the control of a linear system. We optimize the total control force using an LQR algorithm considering acceleration, velocity, and displacement. Then, a response-spectra-based design method is presented. We construct an equivalent passive model (EPM) of the system, which enables the estimation of maximum responses on the response spectra. Moreover, a control-force spectrum is presented to estimate the maximum required active control force. Finally, a design procedure is provided and an example is given to show the feasibility of the design method. The results indicate that this method extends LQR control to buildings with BODs and determines the design parameters from the spectra to meet the design requirements, without relying on simulations or trial-and-error procedures. This presents a promising strategy for designing active control systems in buildings equipped with nonlinear dampers.
{"title":"A response-spectra-based design method for LQR control of active base-isolated buildings with bilinear oil dampers","authors":"Yunhao Zhang , Daiki Sato , Yinli Chen , Jinhua She , Kou Miyamoto","doi":"10.1016/j.jsv.2025.119618","DOIUrl":"10.1016/j.jsv.2025.119618","url":null,"abstract":"<div><div>Linear quadratic regulator (LQR) control has been widely demonstrated to be suitable and effective for active base-isolated buildings. However, its application to the buildings equipped with nonlinear dampers remains challenging due to the theoretical and design complexity. This paper presents a simple response-spectra-based design method for LQR control of active base-isolated buildings with bilinear oil dampers (BODs). First, a gain-scheduling-based LQR (GSLQR) control algorithm is presented to accommodate BODs. The GSLQR controller is defined as a total controller composed of BODs as the passive part and a gain-scheduling (GS) controller as the active part. This separates BODs from the plant, thereby transforming the control of a nonlinear system into the control of a linear system. We optimize the total control force using an LQR algorithm considering acceleration, velocity, and displacement. Then, a response-spectra-based design method is presented. We construct an equivalent passive model (EPM) of the system, which enables the estimation of maximum responses on the response spectra. Moreover, a control-force spectrum is presented to estimate the maximum required active control force. Finally, a design procedure is provided and an example is given to show the feasibility of the design method. The results indicate that this method extends LQR control to buildings with BODs and determines the design parameters from the spectra to meet the design requirements, without relying on simulations or trial-and-error procedures. This presents a promising strategy for designing active control systems in buildings equipped with nonlinear dampers.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"626 ","pages":"Article 119618"},"PeriodicalIF":4.9,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881753","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}
Pub Date : 2025-12-19DOI: 10.1016/j.jsv.2025.119617
G. Bacci , Ø.W. Petersen , V. Denoël , O. Øiseth
Stockbridge dampers are traditionally employed in overhead transmission lines, but their application has recently expanded to suspension bridge hangers. In this context, their increased size, asymmetric configuration, vertical installation, and absence of dedicated design standards present new challenges in understanding their dynamic behaviour. Proper characterisation is essential to correctly dimension the device and determine its optimal placement on the structure. This study addresses these challenges by presenting a four-degree-of-freedom nonlinear model of an asymmetric Stockbridge damper using the Bouc-Wen hysteretic formulation to capture the messenger cables’ amplitude-dependent stiffness and energy dissipation. The model is calibrated and validated against experimental tests conducted on dampers equal to the ones installed on the hangers of the Hålogaland long-span suspension bridge. Unlike impedance-based black-box models, the proposed framework provides a physically consistent representation that can be directly embedded into system-level simulations of hanger-damper dynamics. The present framework can accurately reconstruct both the overall transmitted force and the internal dynamics, in close agreement with the measured responses across varying amplitudes and frequencies. In comparison to existing formulations developed for overhead line dampers, it requires no additional parameters but more effectively captures the amplitude-dependent variation of the damper’s dynamic behaviour, providing improved accuracy in representing its nonlinear characteristics.
{"title":"Bouc-Wen modelling of asymmetric Stockbridge damper for the wind-induced vibration control of suspension bridge hangers","authors":"G. Bacci , Ø.W. Petersen , V. Denoël , O. Øiseth","doi":"10.1016/j.jsv.2025.119617","DOIUrl":"10.1016/j.jsv.2025.119617","url":null,"abstract":"<div><div>Stockbridge dampers are traditionally employed in overhead transmission lines, but their application has recently expanded to suspension bridge hangers. In this context, their increased size, asymmetric configuration, vertical installation, and absence of dedicated design standards present new challenges in understanding their dynamic behaviour. Proper characterisation is essential to correctly dimension the device and determine its optimal placement on the structure. This study addresses these challenges by presenting a four-degree-of-freedom nonlinear model of an asymmetric Stockbridge damper using the Bouc-Wen hysteretic formulation to capture the messenger cables’ amplitude-dependent stiffness and energy dissipation. The model is calibrated and validated against experimental tests conducted on dampers equal to the ones installed on the hangers of the Hålogaland long-span suspension bridge. Unlike impedance-based black-box models, the proposed framework provides a physically consistent representation that can be directly embedded into system-level simulations of hanger-damper dynamics. The present framework can accurately reconstruct both the overall transmitted force and the internal dynamics, in close agreement with the measured responses across varying amplitudes and frequencies. In comparison to existing formulations developed for overhead line dampers, it requires no additional parameters but more effectively captures the amplitude-dependent variation of the damper’s dynamic behaviour, providing improved accuracy in representing its nonlinear characteristics.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"626 ","pages":"Article 119617"},"PeriodicalIF":4.9,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839601","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}
Pub Date : 2025-12-19DOI: 10.1016/j.jsv.2025.119621
Dingxu Guo , Xiuting Sun , Jian Xu , Shu Zhang
Dynamic modeling of parallel manipulator with flexible links (PMFL) based on the assumed mode method (AMM) is highly sensitive to the selection of mode shapes, which significantly influences the dynamic characteristics of the system. To address this challenge, this study investigates the 3-RRR PMFL experimental testbed and applies dynamic mode decomposition (DMD) for modal analysis using visual data. To tackle the limitations of standard DMD in handling system with external inputs, an alternative temporal evolution approach is proposed, enhancing reconstruction accuracy and preserving frequency separation of extracted modes. Additionally, an energy-based criterion for mode re-ranking is introduced to evaluate the energy contributions of different DMD modes, and sparse identification is employed to derive symbolic expressions for dominant mode shapes. Experimentally, instead of traditional hammer excitation, two typical operations are analyzed. Principal component analysis (PCA) is used to extract the dominant vibration direction of visual data, which serves as input for DMD analysis. Results reveal that DMD effectively separates vibration modes from the motion-deformation coupling displacement, outperforming proper orthogonal decomposition (POD) in interpretability. The findings provide valuable insights into mode shape selection in AMM modeling and offer a foundation for parameter analysis and controller design.
{"title":"Vision-based dynamic mode decomposition of 3-RRR parallel manipulator with flexible links","authors":"Dingxu Guo , Xiuting Sun , Jian Xu , Shu Zhang","doi":"10.1016/j.jsv.2025.119621","DOIUrl":"10.1016/j.jsv.2025.119621","url":null,"abstract":"<div><div>Dynamic modeling of parallel manipulator with flexible links (PMFL) based on the assumed mode method (AMM) is highly sensitive to the selection of mode shapes, which significantly influences the dynamic characteristics of the system. To address this challenge, this study investigates the 3-<u>R</u>RR PMFL experimental testbed and applies dynamic mode decomposition (DMD) for modal analysis using visual data. To tackle the limitations of standard DMD in handling system with external inputs, an alternative temporal evolution approach is proposed, enhancing reconstruction accuracy and preserving frequency separation of extracted modes. Additionally, an energy-based criterion for mode re-ranking is introduced to evaluate the energy contributions of different DMD modes, and sparse identification is employed to derive symbolic expressions for dominant mode shapes. Experimentally, instead of traditional hammer excitation, two typical operations are analyzed. Principal component analysis (PCA) is used to extract the dominant vibration direction of visual data, which serves as input for DMD analysis. Results reveal that DMD effectively separates vibration modes from the motion-deformation coupling displacement, outperforming proper orthogonal decomposition (POD) in interpretability. The findings provide valuable insights into mode shape selection in AMM modeling and offer a foundation for parameter analysis and controller design.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"626 ","pages":"Article 119621"},"PeriodicalIF":4.9,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839606","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}
Pub Date : 2025-12-18DOI: 10.1016/j.jsv.2025.119615
Giuliano Guarino, Yannis Voet, Pablo Antolin, Annalisa Buffa
Finite element plate and shell formulations are ubiquitous in structural analysis for modeling all kinds of slender structures, both for static and dynamic analyses. The latter are particularly challenging as the high order nature of the underlying partial differential equations and the slenderness of the structures all impose a stringent constraint on the critical time step in explicit dynamics. Unfortunately, badly cut elements in immersed finite element discretizations further aggravate the issue. While lumping the mass matrix often increases the critical time step, it might also trigger spurious oscillations in the approximate solution thereby compromising the numerical solution. In this article, we extend our previous work in [1] to allow stable immersogeometric analysis of plate and shell problems with lumped mass matrices. This technique is based on polynomial extensions and restores a level of accuracy comparable to boundary-fitted discretizations.
{"title":"A stabilization technique for immersogeometric analysis of plate and shell problems in explicit dynamics","authors":"Giuliano Guarino, Yannis Voet, Pablo Antolin, Annalisa Buffa","doi":"10.1016/j.jsv.2025.119615","DOIUrl":"10.1016/j.jsv.2025.119615","url":null,"abstract":"<div><div>Finite element plate and shell formulations are ubiquitous in structural analysis for modeling all kinds of slender structures, both for static and dynamic analyses. The latter are particularly challenging as the high order nature of the underlying partial differential equations and the slenderness of the structures all impose a stringent constraint on the critical time step in explicit dynamics. Unfortunately, badly cut elements in immersed finite element discretizations further aggravate the issue. While lumping the mass matrix often increases the critical time step, it might also trigger spurious oscillations in the approximate solution thereby compromising the numerical solution. In this article, we extend our previous work in [1] to allow stable immersogeometric analysis of plate and shell problems with lumped mass matrices. This technique is based on polynomial extensions and restores a level of accuracy comparable to boundary-fitted discretizations.</div></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":"626 ","pages":"Article 119615"},"PeriodicalIF":4.9,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145808333","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}
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