Mechanical Systems and Signal Processing最新文献_第6页

A novel estimation method for tire-road friction coefficient using intelligent tire and tire dynamics 一种基于智能轮胎和轮胎动力学的轮胎路面摩擦系数估计新方法

IF 7.9 1区工程技术

Mechanical Systems and Signal Processing Pub Date : 2025-05-22 DOI: 10.1016/j.ymssp.2025.112872

Tianli Gu , Bo Li , Zhenqiang Quan , Shaoyi Bei , Xiaoqiang Sun

{"title":"A novel estimation method for tire-road friction coefficient using intelligent tire and tire dynamics","authors":"Tianli Gu , Bo Li , Zhenqiang Quan , Shaoyi Bei , Xiaoqiang Sun","doi":"10.1016/j.ymssp.2025.112872","DOIUrl":"10.1016/j.ymssp.2025.112872","url":null,"abstract":"<div><div>The tire-road friction coefficient (TRFC) plays a crucial role in vehicle stability, active safety control, and autonomous driving systems. This paper proposes a novel method to estimate the TRFC using accelerometer-based intelligent tires and tire dynamics. Firstly, an intelligent tire finite element model equipped with several accelerometers is established and its accuracy is verified through experiments. Then, the signals collected by accelerometers installed on the tire inner liner are analyzed under various driving conditions. Based on this analysis, input features for the slip angle and vertical load are determined using the Pearson correlation coefficient. Subsequently, combining numerical computations, machine learning and tire lateral deformation model, the estimation model for tire contact path longitudinal length, slip angle, vertical load, lateral force and aligning moment is established and tested. Finally, these estimated tire states are input into the brush tire model to calculate the TRFC. The test results show that the estimation method of TRFC proposed exhibits good performance, with a maximum absolute percentage error of 7.88% and a mean absolute percentage error of 4.71%. Furthermore, the method demonstrates robust performance on both low-friction and high-friction road surfaces, indicating its potential for engineering applications.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"235 ","pages":"Article 112872"},"PeriodicalIF":7.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Dynamic analysis of a vibrating indentation probe for in-situ bowel cancer diagnosis 振动压痕探头用于肠癌原位诊断的动力学分析

IF 7.9 1区工程技术

Mechanical Systems and Signal Processing Pub Date : 2025-05-22 DOI: 10.1016/j.ymssp.2025.112830

Bo Tian, Yang Liu, Julián Londoño Monsalve

{"title":"Dynamic analysis of a vibrating indentation probe for in-situ bowel cancer diagnosis","authors":"Bo Tian, Yang Liu, Julián Londoño Monsalve","doi":"10.1016/j.ymssp.2025.112830","DOIUrl":"10.1016/j.ymssp.2025.112830","url":null,"abstract":"<div><div>Bowel cancer is the second leading cause of cancer-related deaths worldwide, underscoring the critical need for accurate staging. Various methods and tools are being developed to improve the precision and efficiency of bowel cancer diagnoses. This paper studies the development of an indentation probe to measure the mechanical properties of bowel cancer through dynamic analysis. A genetic algorithm is used to determine the parameters of the indentation system by analysing displacement frequency responses obtained from experiments. Additionally, experimental backbone curves are estimated from the indentation probe’s vibration data which are compared against theoretical expressions to approximate the stiffness of test samples. The results obtained from these methods are validated by comparing them with force–displacement outcomes obtained from Instron tests, demonstrating the properties of the samples. The study confirms the potential of the indentation probe to accurately measure stiffness, supporting its future integration into a colonoscope once the probe is appropriately miniaturised.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"235 ","pages":"Article 112830"},"PeriodicalIF":7.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Low-frequency nonlinear vibration control of a dielectric elastomer-based semi-active system 介电弹性体半主动系统的低频非线性振动控制

IF 7.9 1区工程技术

Mechanical Systems and Signal Processing Pub Date : 2025-05-22 DOI: 10.1016/j.ymssp.2025.112878

Yongheng Yu, Fengming Li

{"title":"Low-frequency nonlinear vibration control of a dielectric elastomer-based semi-active system","authors":"Yongheng Yu, Fengming Li","doi":"10.1016/j.ymssp.2025.112878","DOIUrl":"10.1016/j.ymssp.2025.112878","url":null,"abstract":"<div><div>This study explores the low-frequency nonlinear vibration control of a semi-active system based on the dielectric elastomers (DEs). The incremental harmonic balance method (IHBM) combined with the arc-length continuation method is employed to analyze the nonlinear dynamic behaviors and vibration control of the system. The results reveal a series of novel nonlinear dynamic phenomena, including isolated resonance solutions and dual-peak resonance behavior, which emerge with variations in the applied voltage and the thickness of the DEs. Experimental validation supports the numerical results, confirming the observed phenomena. Specifically, it is found that increasing the applied voltage reduces the effective stiffness of the system, thereby intensifying nonlinear behaviors such as bifurcations and expanding the isolated resonance regions. The appearance of these isolated resonance responses gives rise to a unique “nodding” effect, where the resonance peak shifts towards lower frequencies and amplitudes, thus improving low-frequency vibration control. The findings of this study offer contributions to the design of low-frequency vibration control systems, particularly in terms of dynamic stability and vibration control.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"234 ","pages":"Article 112878"},"PeriodicalIF":7.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Analytical modeling and experimental validation of the churning torque based on partial oil immersion wet external rotor permanent magnet BLDC motor with an isolation sleeve 带隔离套的部分油浸湿式外转子永磁无刷直流电机搅拌转矩分析建模与实验验证

IF 7.9 1区工程技术

Mechanical Systems and Signal Processing Pub Date : 2025-05-22 DOI: 10.1016/j.ymssp.2025.112882

Mingzhu Dai, Bin Meng, Chengwei Tong, Sheng Li, Jian Ruan

{"title":"Analytical modeling and experimental validation of the churning torque based on partial oil immersion wet external rotor permanent magnet BLDC motor with an isolation sleeve","authors":"Mingzhu Dai, Bin Meng, Chengwei Tong, Sheng Li, Jian Ruan","doi":"10.1016/j.ymssp.2025.112882","DOIUrl":"10.1016/j.ymssp.2025.112882","url":null,"abstract":"<div><div>To solve the problem of rotary dynamic seals that are prone to failure at high speeds, oil-immersed wet motors are used in motor pumps. The resulting long-term erosive wear and deterioration of the winding insulation layer seriously affects the operational reliability of the motor. This paper presents a wet external rotor permanent magnet brushless DC (WER-PMBLDC) motor with an isolation sleeve separating the oil from the winding. The proposed design improves the reliability of the winding while removing the dynamic seal on the pump shaft. Its partial immersion working condition also offers the possibility of balancing flow resistance and heat dissipation. However, at high speeds, churning loss remains a major constraint on motor output torque. To quickly and accurately evaluate the churning loss of the WER-PMBLDC motor, an analytical model of the churning torque at different oil immersion ratios was established based on boundary layer theory, shearing and pushing flow distributions, and oil-air two-phase model. The flow field was verified by CFD simulation, the partial immersion coefficients of the analytical model were determined, and the influence of key structural parameters on the churning torque was analyzed. Finally, an external rotor churning prototype was manufactured and churning experiments were carried out. The study shows that the churning torque decreases with the decrease in rotation speed and the oil immersion ratio. The average error of the analytical model is only 5.34% at medium and high rotation speeds, which verifies the accuracy of the analytical model. This model can provide useful theoretical guidance for low flow resistance design of the wet motor.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"235 ","pages":"Article 112882"},"PeriodicalIF":7.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 novel data-driven method for aero-engine performance degradation trend prediction under various operating conditions 基于数据驱动的航空发动机性能退化趋势预测新方法

IF 7.9 1区工程技术

Mechanical Systems and Signal Processing Pub Date : 2025-05-22 DOI: 10.1016/j.ymssp.2025.112856

Yu-Qiang Wang , Bo-Yu liang , Yu-Wei Wang , Chen-Yang Zhang , Yong-Ping Zhao

{"title":"A novel data-driven method for aero-engine performance degradation trend prediction under various operating conditions","authors":"Yu-Qiang Wang , Bo-Yu liang , Yu-Wei Wang , Chen-Yang Zhang , Yong-Ping Zhao","doi":"10.1016/j.ymssp.2025.112856","DOIUrl":"10.1016/j.ymssp.2025.112856","url":null,"abstract":"<div><div>Accurate prediction of performance degradation trends is crucial for aero-engine maintenance strategies. Most existing studies assume that data collected under a limited set of operating conditions, or that sufficient non-degraded data are available. Furthermore, these studies typically provide only future performance reference points without accounting for maintenance recovery. During an aero-engine’s service period, data are collected from various operating conditions and degradation states. And forecasting the future performance range of engines holds greater significance for formulating aero-engine maintenance strategies. Based on this, we propose a differential regression method named G-DRM for extracting degradation features and a probabilistic interval prediction method named QCformer. G-DRM assumes that the performance degradation between two adjacent sampling points of the same engine can be neglected and standardizes data by fitting the relationship between the changes in operating conditions and performance variables. QCformer models maintenance activities using event encoding and employs Pinball loss for probabilistic interval predictions of future aero-engine performance. To validate the effectiveness of the two methods, degradation trend extraction and prediction experiments are conducted on a turboprop engine dataset, with comparisons made to other widely used strategies.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"234 ","pages":"Article 112856"},"PeriodicalIF":7.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Multivariate symplectic sparsest united decomposition and its application to rolling bearing fault diagnosis 多元辛稀疏统一分解及其在滚动轴承故障诊断中的应用

IF 7.9 1区工程技术

Mechanical Systems and Signal Processing Pub Date : 2025-05-22 DOI: 10.1016/j.ymssp.2025.112802

Weikang Sun , Yanfei Liu , Yanfeng Peng , Haiyang Pan , Yiping Shen , Guangfu Bin , Jinde Zheng , Zhou Jie

{"title":"Multivariate symplectic sparsest united decomposition and its application to rolling bearing fault diagnosis","authors":"Weikang Sun , Yanfei Liu , Yanfeng Peng , Haiyang Pan , Yiping Shen , Guangfu Bin , Jinde Zheng , Zhou Jie","doi":"10.1016/j.ymssp.2025.112802","DOIUrl":"10.1016/j.ymssp.2025.112802","url":null,"abstract":"<div><div>Conventional rolling bearing fault signal decomposition methods often suffer from at least some of the following problems: algorithms lacking adaptability and anti-noise performance, components lacking physical significance, or difficulty in achieving modal alignment when analyzing multichannel signals. Aiming at these problems, this paper takes advantage of the strong adaptability and robustness of symplectic geometric mode decomposition (SGMD). On the basis of its theory, to improve the physical significance of its components and realize the modal alignment of multichannel signal decomposition results, the multivariate symplectic sparsest united decomposition (MSSUD) method is proposed. In MSSUD, the multichannel signals are characterized uniformly by employing the completely adaptive projection (CAP) method. Then the regularized singular local linear operator is employed as the optimization objective, the constructed sparse filter parameters are optimized, which constrains the decomposed multivariate symplectic sparsest mode components (MSSMC) to local narrowband signals while also achieving a unified segmentation of the multichannel signals in frequency band. The analysis results demonstrate the MSSUD method not only has the properties of modal alignment, but also has better decomposition accuracy and anti-noise ability.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"235 ","pages":"Article 112802"},"PeriodicalIF":7.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Vibration suppression using piezoelectric actuator-based active flexure joints for high precision operations 基于压电作动器的主动柔性关节的高精度振动抑制

IF 7.9 1区工程技术

Mechanical Systems and Signal Processing Pub Date : 2025-05-22 DOI: 10.1016/j.ymssp.2025.112816

Runan Zhang , Luke Hyman , Jianhang Ding , Patrick S. Keogh , Nicola Y. Bailey

{"title":"Vibration suppression using piezoelectric actuator-based active flexure joints for high precision operations","authors":"Runan Zhang , Luke Hyman , Jianhang Ding , Patrick S. Keogh , Nicola Y. Bailey","doi":"10.1016/j.ymssp.2025.112816","DOIUrl":"10.1016/j.ymssp.2025.112816","url":null,"abstract":"<div><div>Flexure couplings are alternatives to conventional mechanical joints, eliminating tribological effects and joint reversal uncertainties. However, their low stiffness-induced dynamic errors hinder utilisation in high precision applications. Additionally, during operation flexure couplings can experience large deflections, leading to significant changes in their dynamic behaviour. An effective vibration control approach to minimise these effects is yet to be thoroughly investigated. To reduce resonance during operation, this work proposes to embed Micro-Fibre-Composites onto a passive flexure coupling structure, creating an active flexure coupling. A comparison between the mathematical model and measured system behaviour of passive and active flexure couplings shows the flexure coupling modification has insignificant impact on its elastic characteristics. Therefore, the robust mathematical representation of a system containing a passive flexure coupling is valid for designing feedforward motion control of an active flexure coupling. However, the performance of the active flexure coupling in vibration suppression is significant and demonstrated in both fixed poses and continuous motion-tracking of a two-link actuated system. This includes large deflections of the flexure coupling with a variation of the tip angle from <span><math><mrow><mo>−</mo><mn>34</mn><mo>.</mo><msup><mrow><mn>5</mn></mrow><mrow><mo>∘</mo></mrow></msup></mrow></math></span> to <span><math><mrow><mn>37</mn><mo>.</mo><msup><mrow><mn>2</mn></mrow><mrow><mo>∘</mo></mrow></msup></mrow></math></span>. By implementing active flexure couplings into automated systems, high precision and high-value applications can be achieved.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"235 ","pages":"Article 112816"},"PeriodicalIF":7.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Vibration control of vehicle ISD suspension based on the fractional-order SH-GH stragety 基于分数阶SH-GH策略的汽车ISD悬架振动控制

IF 7.9 1区工程技术

Mechanical Systems and Signal Processing Pub Date : 2025-05-21 DOI: 10.1016/j.ymssp.2025.112880

Yujie Shen , Jinyuan Li , Rongnan Huang , Xiaofeng Yang , Junjie Chen , Long Chen , Ming Li

{"title":"Vibration control of vehicle ISD suspension based on the fractional-order SH-GH stragety","authors":"Yujie Shen , Jinyuan Li , Rongnan Huang , Xiaofeng Yang , Junjie Chen , Long Chen , Ming Li","doi":"10.1016/j.ymssp.2025.112880","DOIUrl":"10.1016/j.ymssp.2025.112880","url":null,"abstract":"<div><div>To further explore the beneficial effects of vehicle ISD (inerter-spring-damper) suspension, an optimal design approach grounded in the fractional-order SH-GH (skyhook-groundhook hybrid) control strategy is put forward in this paper. First, by incorporating fractional-order theory, the ideal SH-GH ISD suspension structure, comprising both integer-order and fractional-order elements, is derived. After obtaining key parameters using the improved simulated annealing optimization algorithm, simulation results indicate that the S2 (Fractional-order) outperforms others in the SH-GH ISD suspension structures. Subsequently, a dynamics model for the actual S2 (Fractional-order) 1/4 vehicle suspension is developed and designated as the reference model. The controllable ISD suspension (Fractional-order) incorporating a mechatronic inerter is chosen as the controlled model, and a model reference adaptive controller is devised to accurately track the reference model. Finally, a specialized suspension test bench is employed to evaluate the performance of the controllable ISD suspension system. Under sinusoidal road input, the controllable ISD suspension (Fractional-order) demonstrates a reduction in the RMS values of both vehicle body acceleration and dynamic tire load across both low-frequency and high-frequency bands. Under random road input, the controllable ISD suspension (Fractional-order) demonstrates a significant reduction in the RMS value of vehicle body acceleration when compared to passive suspension. The experimental results outperform those of controllable ISD suspension (Integer-order) under both sinusoidal road input and random road input conditions. The results indicate that fractional-order SH-GH control can further enhance the vibration suppression capability of the vehicle ISD suspension.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"234 ","pages":"Article 112880"},"PeriodicalIF":7.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Kernel design for estimation of resonant systems: A case study on vehicle suspension 共振系统估计的核设计：以汽车悬架为例

IF 7.9 1区工程技术

Mechanical Systems and Signal Processing Pub Date : 2025-05-20 DOI: 10.1016/j.ymssp.2025.112875

Ai Hui Tan , Mathias Foo

{"title":"Kernel design for estimation of resonant systems: A case study on vehicle suspension","authors":"Ai Hui Tan , Mathias Foo","doi":"10.1016/j.ymssp.2025.112875","DOIUrl":"10.1016/j.ymssp.2025.112875","url":null,"abstract":"<div><div>This paper considers the kernel design for impulse response estimation of resonant systems, exemplified through a vehicle suspension system. The identification of resonant systems is highly challenging due to their long impulse responses and dynamics that may be close to the limit of stability. These issues have not been investigated in the existing literature on kernel design. A novel incremental approach for the design of multiple-kernels is proposed, where the kernels are added sequentially in a structured manner, with checks to ensure that they match practical expectations. The proposed method possesses the advantages of simplicity, low computational complexity, good numerical conditioning and high feasibility in practical applications. A detailed case study on a vehicle suspension system is presented for the theoretical case and experimental cases with two different grades of road roughness leading to different resonant behavior. It was found that the proposed technique resulted in simple multiple-kernels comprising a combination of Kautz kernels that outperformed the current state-of-the-art diagonal-correlated and single Kautz kernels, recording the highest output fit and the lowest uncertainty under real-world conditions on four separate experimental datasets. Additionally, the incremental approach successfully captured the multiple resonances in the system. Comparison with multiple-kernels of the same structure but optimized using a competing technique showed that the proposed method has an increasing edge as the number of resonances increases. The findings from this work are significant for identifying systems with multiple resonances, such as for structural health monitoring and the development of digital twins.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"234 ","pages":"Article 112875"},"PeriodicalIF":7.9,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

CBi-AM: A fusion model for predicting inverse nonlinear dynamics of magnetorheological elastomer isolator CBi-AM：磁流变弹性体隔振器逆非线性动力学预测的融合模型

IF 7.9 1区工程技术

Mechanical Systems and Signal Processing Pub Date : 2025-05-20 DOI: 10.1016/j.ymssp.2025.112815

Mi Zhu , Yilin Yao , Wang Li , Hanguang Xiao , Pufan Zhu , Luhang Jiang , Ningsheng Liao , Bo Peng , Miao Yu

{"title":"CBi-AM: A fusion model for predicting inverse nonlinear dynamics of magnetorheological elastomer isolator","authors":"Mi Zhu , Yilin Yao , Wang Li , Hanguang Xiao , Pufan Zhu , Luhang Jiang , Ningsheng Liao , Bo Peng , Miao Yu","doi":"10.1016/j.ymssp.2025.112815","DOIUrl":"10.1016/j.ymssp.2025.112815","url":null,"abstract":"<div><div>Magnetorheological elastomers (MREs) have attracted considerable attention due to their adaptive stiffness and damping properties, which make them highly effective for vibration isolation applications. Despite recent advancements in MRE isolation technology, significant challenges persist in accurately modeling the inverse nonlinear dynamics of MRE isolator. This paper proposes a novel CBi-AM model that integrates convolutional neural network (CNN), bi-directional long short-term memory (Bi-LSTM), and attention mechanism, to enable a refined understanding of feature importance across time-series data. Firstly, the dynamic performance of an MRE laminated isolator is test, showcasing the significant influence of excitation conditions. Then a robust dataset is generated through data augmentation on experimental signals, thereby enhancing the model training. Finally, several publicly models from both traditional machine learning and contemporary deep learning are constructed, and ablation experiments are conducted for comparative analysis. The results demonstrate that the CBi-AM model outperforms traditional and state-of-the-art baseline models in predicting the inverse performance of MRE isolator, achieving remarkable improvements in higher predictive accuracy (<span><math><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span>=0.97802) and lower error metrics (MSE=0.04157, MAE=0.10665), which also exhibits its enhanced robustness and generalization capabilities. In addition to its intrinsic contribution to advancing inverse modeling techniques for MRE devices, this research lays the groundwork for future developments in modeling other mechanical systems characterized by strong nonlinearity.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"234 ","pages":"Article 112815"},"PeriodicalIF":7.9,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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