Noise and Vibration Worldwide最新文献_第2页

Free vibration and buckling response of functionally graded triply periodic minimal surface beams considering neutral axis dislocation 考虑中性轴位错的功能梯度三周期最小面梁的自由振动和屈曲响应

Noise and Vibration Worldwide Pub Date : 2023-09-25 DOI: 10.1177/09574565231203254

Mithilesh Kurup, Jeyaraj Pitchaimani

引用次数: 0

Ride comfort analysis of vehicle seat suspension systems: A co-simulation study 汽车座椅悬架系统的平顺性分析:联合仿真研究

Noise and Vibration Worldwide Pub Date : 2023-09-25 DOI: 10.1177/09574565231203246

Ramalingam M, Arun K T, Davidson Jebaseelan, Seung-Bok Choi, Jebaraj C

{"title":"Ride comfort analysis of vehicle seat suspension systems: A co-simulation study","authors":"Ramalingam M, Arun K T, Davidson Jebaseelan, Seung-Bok Choi, Jebaraj C","doi":"10.1177/09574565231203246","DOIUrl":"https://doi.org/10.1177/09574565231203246","url":null,"abstract":"In this study, the vehicle seat suspension system installed with a semi-active magnetorheological (MR) damper is excited by the power spectral density (PSD) and its vibration control performance is evaluated using finite element analysis (FEA). The control system receives the velocity of the sprung and unsprung mass from the seat mounting locations and calculates the desired controllable damping forces available from MR damper. The effectiveness of the control systems is demonstrated by adopting ride quality evaluation method. To predict a better ride comfort and ride quality, co-simulation methodology is utilized considering the dynamic behavior of the real-world seat system. In this case, the multi-body dynamics and control system are coupled by solving the mechanical equations and the control logic. Then, the computed damping force is exchanged between the dynamics and controller in an iterative manner by passing state variables. The simulation results achieved from co-simulation methodology associated with the controller are analyzed by comparing with ISO 2631-1. The co-simulation results studied using vibration dose value (VDV), crest factor (CF) and seat effective amplitude transmissibility (SEAT) in terms of percentage improvement were found to be 44.33%, 26.66% and 17.65% respectively which were better than that for the passive suspension for a random rough road profile. Modified skyhook controller delivers superior performance for vibration suppression of the vehicle seat suspension as compared to other control policies. The application of co-simulation methodology can reduce time and cost for the development of a semi-active seat suspension system.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135864044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Clear imaging method based on far-field beamforming for substation noise source identification 基于远场波束形成的变电站噪声源识别清晰成像方法

Noise and Vibration Worldwide Pub Date : 2023-09-22 DOI: 10.1177/09574565231203253

Li Li, Zhigang Chu, Yang Zhao, Linyong Li

{"title":"Clear imaging method based on far-field beamforming for substation noise source identification","authors":"Li Li, Zhigang Chu, Yang Zhao, Linyong Li","doi":"10.1177/09574565231203253","DOIUrl":"https://doi.org/10.1177/09574565231203253","url":null,"abstract":"The noise problem of substations has become increasingly prominent in recent years, and the accurate identification of noise sources has been the prerequisite for substation noise control. By virtue of the advantages of long measurement distance and panoramic acoustic imaging, far-field beamforming based on solid spherical microphone arrays has broad application prospects in large substation noise source identification. Spherical harmonics beamforming (SHB) is a classical algorithm matched with spherical microphone arrays. However, its sound source identification results suffer from problems such as wide mainlobes at low frequencies and abundant sidelobes at high frequencies, which lead to limited acoustic imaging clarity. In order to achieve clear acoustic imaging of noise sources in large substations, the output of far-field SHB is reconstructed and the method of clear SHB (C-SHB) is proposed. The simulations and experiment show that C-SHB can significantly reduce the mainlobe width and suppress the sidelobe contamination, thus effectively improving the imaging clarity of SHB and enhancing its weak source identification capability.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136062193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural optimization of a small earth remote sensing satellite 小型地球遥感卫星结构优化

Noise and Vibration Worldwide Pub Date : 2023-09-20 DOI: 10.1177/09574565231203252

Ali Aborehab, Mohammed Kassem, Ahmed Farid Nemnem, M. Kamel

{"title":"Structural optimization of a small earth remote sensing satellite","authors":"Ali Aborehab, Mohammed Kassem, Ahmed Farid Nemnem, M. Kamel","doi":"10.1177/09574565231203252","DOIUrl":"https://doi.org/10.1177/09574565231203252","url":null,"abstract":"Structural sizing optimization is a crucial step in the process of modern satellite structural design. It warrants minimizing the satellite structural mass while improving the overall quality and reliability of such design. This article discusses thoroughly the structural optimization of a small earth remote sensing satellite whose primary structure is based upon aluminum honeycomb sandwich plates. A novel contribution has been conducted in extending the optimization problem to include the main static and dynamic loads acting simultaneously on the satellite during launch phase utilizing the results of static, buckling, modal, and harmonic response analyses. The small satellite optimization process starts initially with formulating the optimization problem based upon the structural analyses results. Subsequently, miscellaneous optimization techniques utilizing ANSYS workbench capabilities represented in “DesignXplorer” module are employed. Finally, the results are compared with other results obtained from a MATLAB code based upon both genetic and sequential quadratic programming algorithms. The optimization process leads to approximately 30% mass reduction in the proposed satellite structure. A special attention is drawn towards meta-models due to their capabilities in solving complex structural models with a reasonable wall-clock time.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"53 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136308994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parametric analysis on temperature influence on brake squeal generation in a single-seater off-road vehicle’s disc brake 温度对单座越野车盘式制动器制动尖叫产生影响的参数分析

Noise and Vibration Worldwide Pub Date : 2023-09-20 DOI: 10.1177/09574565231203250

Mateus Holanda Cardoso Maciel, Rômulo do Nascimento Rodrigues, Camilo Augusto Santos Costa, Roberto De Araujo Bezerra, Vanessa Vieira Gonçalves, Thiago Victor Albuquerque de Freitas

{"title":"Parametric analysis on temperature influence on brake squeal generation in a single-seater off-road vehicle’s disc brake","authors":"Mateus Holanda Cardoso Maciel, Rômulo do Nascimento Rodrigues, Camilo Augusto Santos Costa, Roberto De Araujo Bezerra, Vanessa Vieira Gonçalves, Thiago Victor Albuquerque de Freitas","doi":"10.1177/09574565231203250","DOIUrl":"https://doi.org/10.1177/09574565231203250","url":null,"abstract":"Brakes are a critical component of automobiles, responsible for converting kinetic energy into heat and vibration. The phenomenon of brake squeal, which produces uncomfortable noises, has been extensively studied in both drum and disc brakes. Many studies have evaluated the influence of material and operational parameters on brake instability to reduce squeal. However, the effect of temperature, a key factor in brake performance, is often overlooked. This study aims to fill this gap by analyzing a single rear-axle disc brake from an off-road single-seater vehicle using a parametric approach. Two branches were developed in ANSYS software. The first branch consisted of a finite element model of the brake with disc, pads, and backplates. A static structural analysis was performed to simulate a real braking pressure situation, and the resulting pre-stress state was used to conduct complex modal analysis, which extracted eigenvalues and values responsible for stability. The second branch involved a transient thermal simulation before the static analysis, also considering a real braking situation, to create a gradient of temperature and change component pre-stress reactions accordingly. A design of experiments process was used to explore geometric, thermal, and operational variables. The results showed that temperature and its parameters (convection and emissivity coefficient) increase brake squeal. Thus, considering the effect of temperature is crucial when evaluating brake instability, and optimizing temperature control can help reduce brake squeal, improving safety and comfort for drivers and passengers.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136264772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 isotropic stiffened plate structure 各向同性加筋板结构分析

Noise and Vibration Worldwide Pub Date : 2023-09-19 DOI: 10.1177/09574565231203255

Deepak Kumar Singh, Preeti Agarwal

{"title":"Analysis of isotropic stiffened plate structure","authors":"Deepak Kumar Singh, Preeti Agarwal","doi":"10.1177/09574565231203255","DOIUrl":"https://doi.org/10.1177/09574565231203255","url":null,"abstract":"The analysis of stiffened plate has been carried out using finite element method. The study is divided into static and dynamic analyses. Primarily, free vibration frequencies of the stiffened plate have been determined followed by determination of deflection and von Mises stress for the stiffened plate subjected to the unit uniformly distributed load (1 kN/m 2 ). Further, deflection and von Mises stress are determined, when the plate structure is subjected to hydrostatic loading. The analyses, static and dynamic, have been done using ANSYS Workbench 15.0. A single flat stiffener is used to stiffen the plate structure and the results are evaluated by varying the stiffener geometry, keeping the volume of material almost same as the unstiffened plate. Stiffened plate structure is very popular in the structural engineering domain and has a wide range of engineering applications from ship to aerospace structures. The material used to model stiffener is extracted from the primary plate for keeping the same volume of material. The plate structure is stiffened to reduce the out-of-plane bending even if the same (approximately) amount of material is utilised. Eight-noded plate bending and two-noded beam elements are used to model the plate and stiffener, respectively. The obtained results are compared with the published results and the effect of varying stiffener geometry is further examined. It may be concluded that the response of the stiffened plates are better compared to unstiffened plate even if the same or even less quantity of material is utilised in stiffening. The present findings are useful for the designers when the plate structure is influenced by the surrounding fluid.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135059163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An experimental and finite element investigation for determining critical speeds of a cracked jeffcott rotor model 裂纹jeffcott转子模型临界转速的实验与有限元研究

Noise and Vibration Worldwide Pub Date : 2023-09-15 DOI: 10.1177/09574565231203259

Kedar Kishor Patil, Dr. Sanjay Hari Sawant

引用次数: 1

A comprehensive study of the effects of various design variables on the dynamic behavior and vibration characteristics of a front-loading washing machine 综合研究了各种设计变量对前装式洗衣机动力性能和振动特性的影响

Noise and Vibration Worldwide Pub Date : 2023-08-05 DOI: 10.1177/09574565231194312

Fatemeh Hashemian, X. Deng, Yi Wang, Seung-Oh Kim, Raveendran Vaidhyanathan

{"title":"A comprehensive study of the effects of various design variables on the dynamic behavior and vibration characteristics of a front-loading washing machine","authors":"Fatemeh Hashemian, X. Deng, Yi Wang, Seung-Oh Kim, Raveendran Vaidhyanathan","doi":"10.1177/09574565231194312","DOIUrl":"https://doi.org/10.1177/09574565231194312","url":null,"abstract":"This paper presents the findings of a comprehensive study of the effects of various design variables on the dynamic behavior and vibration characteristics of a front-loading washing machine. A multibody dynamics model of the washing machine with a set of 9 key design variables is developed using the commercial multibody simulation software Adams View. The design variables are implemented to enable automated modifications of the dynamics model for certain parameters such as the geometric orientations of the springs and dampers in the washing machine. This dynamics model is employed to perform a series of numerical simulations by considering a range of parametric values for the design variables. Numerical convergence analysis is performed to ensure that the simulation solutions are converged. Using the simulation solutions, the time histories of displacements at select points of the washing machine during operation (from transient till steady-state motion) are analyzed to understand how the natural frequencies of the washing machine are affected by various design variables. Finally, a sensitivity analysis is carried out to determine the design variables that have the strongest impact on the dynamic behavior of the washing machine. Of all the design variables affecting the dynamic behavior of the washer model, the weight balancer mass density and the damping coefficient were found to have the strongest effect.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"54 1","pages":"477 - 491"},"PeriodicalIF":0.0,"publicationDate":"2023-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45322048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vibration related symptoms and signs in two groups of exposed workers 两组暴露工人的振动相关症状和体征

Noise and Vibration Worldwide Pub Date : 2023-08-01 DOI: 10.1177/09574565231193047

L. Gerhardsson, M. Hagberg

引用次数: 0

Free vibration analysis of a skew sandwich plate with bamboo biocomposite and polylactic acid core under temperature and moisture conditions 温度和湿度条件下竹生物复合材料-聚乳酸夹层板的自由振动分析

Noise and Vibration Worldwide Pub Date : 2023-07-30 DOI: 10.1177/09574565231193045

Atul S Gawande, S. Kattimani, S. Murigendrappa, T. Nguyen-Thoi, H. Kamyab, S. Althamer

{"title":"Free vibration analysis of a skew sandwich plate with bamboo biocomposite and polylactic acid core under temperature and moisture conditions","authors":"Atul S Gawande, S. Kattimani, S. Murigendrappa, T. Nguyen-Thoi, H. Kamyab, S. Althamer","doi":"10.1177/09574565231193045","DOIUrl":"https://doi.org/10.1177/09574565231193045","url":null,"abstract":"This article investigates the impact of moisture and temperature on vibration characteristics of bio-composite skew-laminated composite sandwich (SLCS) plates. The bio-composite SLCS plates with bamboo face sheets and polylactic acid (PLA) cores are biodegradable, radiolucent, lightweight, high strength, and withstand vibrations. The coupled thermo-elastic and hygro-elastic finite element (FE) model of the SLCS plate is derived using the higher-order shear deformation theory (HSDT). An initial stress stiffness matrix is developed using the nonlinear strain-displacement relations to incorporate the effect of temperature and moisture in FE modeling. Temperature and moisture-dependent material properties of bamboo fiber-reinforced biocomposite (BFB) and PLA core are employed for the analysis. A comprehensive investigation has been carried out to study the impact of moisture and temperature situations with different geometrical parameters and various skew angles on the frequency of the SLCS plate. The results indicate that the biocomposite sandwich material has excellent potential for structural applications under different environmental conditions in various applications like food processing, and biomedical applications, including MRI and CT scan beds.","PeriodicalId":55888,"journal":{"name":"Noise and Vibration Worldwide","volume":"54 1","pages":"434 - 459"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49205148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0