国际机械系统动力学学报(英文)最新文献_第3页

Super-Element Differential-Quadrature Discrete-Time Transfer Matrix Method for Efficient Transient Analysis of Rotor Systems 转子系统高效瞬态分析的超单元微分-正交离散时间传递矩阵法

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2025-03-16 DOI: 10.1002/msd2.70002

Kai Xie, Xiaoting Rui, Bin He, Jinghong Wang

{"title":"Super-Element Differential-Quadrature Discrete-Time Transfer Matrix Method for Efficient Transient Analysis of Rotor Systems","authors":"Kai Xie, Xiaoting Rui, Bin He, Jinghong Wang","doi":"10.1002/msd2.70002","DOIUrl":"https://doi.org/10.1002/msd2.70002","url":null,"abstract":"Efficient transient analysis is critical in rotor dynamics. This study proposes the super-element (SE) differential-quadrature discrete-time transfer matrix method (DQ-DT-TMM), a novel approach that eliminates the requirement for initial component accelerations and effectively handles beam and solid finite element (FE) models with high-dimensional degrees of freedom (DOFs) in rotor systems. The primary methodologies of this approach include: (1) For the beam substructure FE dynamic equation, the Craig–Bampton method is employed for the order reduction of internal coordinates, followed by the differential-quadrature method for temporal discretization. Using SE technology, the internal accelerations are condensed into the boundary accelerations, and the transfer equation and matrix for beam SEs are derived. (2) For the solid substructure FE dynamic equation formulated in the rotating reference frame, in addition to applying the procedures used for beam substructures, rigid multipoint constraints are introduced to condense the boundary coordinates for hybrid modeling with lumped parameter components. The transfer equation is subsequently formulated in the inertial reference frame, enabling the derivation of the transfer matrix for solid SEs. Comparative analysis with full-order FE models in commercial software demonstrates the advantages of the SE DQ-DT-TMM for linear rotor systems: (i) Accurately captures system dynamics using only a few primary modes. (ii) Achieves a 99.68% reduction in computational time for a beam model with 1120 elements and a 99.98% reduction for a solid model with 75 361 elements. (iii) Effectively recovers dynamic responses at any system node using recovery techniques. This research develops a computationally efficient framework for the transient analysis of large-scale rotor systems, effectively addressing the challenges associated with high-dimensional DOF models in conventional DT-TMMs.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"5 1","pages":"141-159"},"PeriodicalIF":3.4,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural Health Monitoring of Thin Shell Structures 薄壳结构健康监测

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2025-03-13 DOI: 10.1002/msd2.12141

Ihtisham Khalid, Zahid Ahmed Qureshi, Faisal Siddiqui, Selda Oterkus, Erkan Oterkus

{"title":"Structural Health Monitoring of Thin Shell Structures","authors":"Ihtisham Khalid, Zahid Ahmed Qureshi, Faisal Siddiqui, Selda Oterkus, Erkan Oterkus","doi":"10.1002/msd2.12141","DOIUrl":"https://doi.org/10.1002/msd2.12141","url":null,"abstract":"Thin plate and shell structures are extensively used in aerospace, naval, and energy sectors due to their lightweight and efficient load-bearing properties. Structural Health Monitoring (SHM) implementations are becoming increasingly important in these industries to reduce maintenance costs, improve reliability, and ensure safe operations. This study presents an efficient triangular inverse shell element for thin shell structures, developed using discrete Kirchhoff assumptions within the inverse finite element method (iFEM) framework. The proposed inverse formulation is efficient and requires fewer strain sensors to achieve accurate and reliable displacement field reconstruction than existing inverse elements based on the First Order Shear Deformation Theory (FSDT). These features are critical to iFEM-based SHM strategies for improving real-time efficiency while reducing project costs. The inverse element is rigorously validated using benchmark problems under in-plane, out-of-plane, and general loading conditions. Also, its performance is compared to an existing competitive inverse shell element based on FSDT. The inverse formulation is further evaluated for robust shape-sensing capability, considering a real-world structural configuration under a practicable sparse sensor arrangement. Additional investigation includes defect characterization and structural health assessment using damage index criteria. This research contributes toward developing more reliable and cost-effective monitoring solutions by highlighting the potential application of the proposed inverse element for SHM frameworks designed for thin shell structures.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"5 1","pages":"20-39"},"PeriodicalIF":3.4,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12141","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Safeguarding Pipeline Integrity Through Stacked Ensemble Learning and Data Fusion 通过堆叠集成学习和数据融合保护管道完整性

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2025-03-13 DOI: 10.1002/msd2.12142

Hussein A. M. Hussein, Sharafiz B. Abdul Rahim, Faizal B. Mustapha, Prajindra S. Krishnan

{"title":"Safeguarding Pipeline Integrity Through Stacked Ensemble Learning and Data Fusion","authors":"Hussein A. M. Hussein, Sharafiz B. Abdul Rahim, Faizal B. Mustapha, Prajindra S. Krishnan","doi":"10.1002/msd2.12142","DOIUrl":"https://doi.org/10.1002/msd2.12142","url":null,"abstract":"This research presents a novel approach to pipeline Structure Health Monitoring (SHM) by utilizing frequency response function signals and integrating advanced data-driven techniques to detect and evaluate vibration responses regarding loose bolts, scale deposits within pipelines, and cracks at pipeline supports, aiming to determine the effectiveness of utilizing artificial neural networks (ANN) and an ensemble learning approach in detecting the aforementioned damages through a data-driven approach. The research starts by recording 6500 samples captured by two accelerometers, related to 11 replicated pipeline structural scenarios. The research demonstrated the potential of principal component analysis (PCA) in dimensionality reduction, achieving approximately 81% reduction in data set 1 acquired by accelerometer 1 and around 79.5% in data set 2 acquired by accelerometer 2, without significant loss of information. Additionally, two ANN base models were employed for fault recognition and classification, achieving over 99.88% accuracy and mean squared error values ranging from 0.00006 to 0.00019. A significant innovation of this work lies in the implementation of an ensemble learning approach, which integrates the strengths of the base models, showcasing outstanding performance that was proved consistent across multiple iterations, effectively mitigating the weaknesses of the base models and providing a reliable fault classification and prediction system. This research underscores the effectiveness of combining PCA, ANN, k-fold cross-validation, and ensemble learning techniques in pipeline SHM for improved reliability and safety. The findings highlight the potential for broader applications of this methodology in real-world scenarios, addressing urgent challenges faced by infrastructure owners and operators.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"5 1","pages":"129-140"},"PeriodicalIF":3.4,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Critical Distance Parameter for Random Vibration Fatigue Life Estimation of Notched Metallic Structures in the Frequency Domain 缺口金属结构随机振动疲劳寿命估计的临界距离参数

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2025-01-06 DOI: 10.1002/msd2.12139

Daiyang Gao, Yuming Huang, Wenhe Liao

引用次数: 0

Cover Image, Volume 4, Number 4, December 2024 封面图片，第四卷，第4期，2024年12月

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-12-23 DOI: 10.1002/msd2.12140

引用次数: 0

Dynamic Performances of a Double-Layer Vibration Isolation System: Nonlinear Modeling and Experimental Validation 双层隔振系统的动态性能：非线性建模与实验验证

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-12-19 DOI: 10.1002/msd2.12138

Chao Zheng, Jin Gao, Jianchao Liu, Xin Xue

{"title":"Dynamic Performances of a Double-Layer Vibration Isolation System: Nonlinear Modeling and Experimental Validation","authors":"Chao Zheng, Jin Gao, Jianchao Liu, Xin Xue","doi":"10.1002/msd2.12138","DOIUrl":"https://doi.org/10.1002/msd2.12138","url":null,"abstract":"This work aims to identify ways to achieve dynamic performances of a novel double-layer vibration isolation system (DL-VIS) capable of achieving multi-directional isolation and extreme environmental adaptability. A forward modeling approach applicable to complex systems has been developed and analyses of nonlinear dynamic characteristics under different working conditions are performed. First, by integrating with constitutive models in terms of individual elastic elements and the connective relationships within the structure, multidirectional constitutive models for isolation devices are established. Further, the decomposition of linear and nonlinear stiffness components in different directions is performed using the Taylor expansion method. Subsequently, the dynamic response under sinusoidal sweep frequency loading is obtained using the related stiffnesses in the dynamic model and adopting the extended harmonic balance method. The effects of stiffness, damping, and a nonlinear stiffness gradient on the DL-VIS response are thoroughly evaluated. Finally, the vibration isolation performance and nonlinear dynamics under different working conditions are examined, and the proposed dynamic model is experimentally validated. The results indicate that the response of DL-VIS varies significantly under different working conditions, particularly under overload conditions. The nonlinear characteristics lead to wide-band instability near the natural frequency and excellent vibration attenuation performance in multiple directions. The theoretical model agrees well with the experimental results in the nonresonant region and near the first resonant peak, which proves the prediction accuracy in the low-frequency range. These findings provide robust theoretical and technical support for the design and performance optimization of isolation systems.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"5 1","pages":"113-128"},"PeriodicalIF":3.4,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12138","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the size-dependent vibrations of doubly curved porous shear deformable FGM microshells 双弯曲多孔剪切变形FGM微壳尺寸相关振动研究

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-12-09 DOI: 10.1002/msd2.12137

Behrouz Karami, Mergen H. Ghayesh, Shahid Hussain, Marco Amabili

引用次数: 0

Structural health monitoring of precracked structures using an in-plane inverse crack-tip element 基于面内逆裂纹尖端单元的预裂结构健康监测

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-11-29 DOI: 10.1002/msd2.12136

Ihtisham Khalid, Zahid Ahmed Qureshi, Hafiz Qasim Ali, Selda Oterkus, Erkan Oterkus

{"title":"Structural health monitoring of precracked structures using an in-plane inverse crack-tip element","authors":"Ihtisham Khalid, Zahid Ahmed Qureshi, Hafiz Qasim Ali, Selda Oterkus, Erkan Oterkus","doi":"10.1002/msd2.12136","DOIUrl":"https://doi.org/10.1002/msd2.12136","url":null,"abstract":"This study investigates the application of the inverse finite element method (iFEM) in fracture mechanics by developing a novel two-dimensional six-node triangular inverse crack-tip element. With its simplified formulation, the proposed inverse element is computationally efficient and ensures strain singularity at the crack tip by repositioning midside nodes. Its displacement-based stress intensity factor (SIF) computation methodology integrates seamlessly with the existing iFEM framework, making it highly suitable for real-time health assessment of structures with pre-existing cracks. The inverse element has been rigorously validated for shape-sensing and mixed-mode SIF calculations by considering various crack geometries and mixed-mode loading conditions. The triangular inverse element demonstrates superior flexibility in handling structured and unstructured discretizations in mapping regular and complex geometries, particularly high-stress gradient areas like crack tips. The study also explores the variational least squares method for optimal sensor placement within the inverse element domain, ensuring accurate shape-sensing and SIF computations with fewer onboard strain sensors. The proposed inverse formulation, with its accurate shape-sensing capabilities and precise reconstruction of fracture parameters, represents a significant advancement in the real-time Structural Health Monitoring of engineering structures with pre-existing cracks.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"4 4","pages":"406-426"},"PeriodicalIF":3.4,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12136","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of the parametric configuration impact on BallBot control performance 参数配置对BallBot控制性能的影响分析

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-11-29 DOI: 10.1002/msd2.12133

Anh-Duc Pham, Ba Hoa Thai, Phuoc Vinh Dang, Nhu Thanh Vo

引用次数: 0

Dynamic coefficient of flexural motion of beam experiencing simple support under successive moving loads 连续移动荷载作用下简支梁挠曲运动动力系数

IF 3.4

国际机械系统动力学学报(英文) Pub Date : 2024-11-17 DOI: 10.1002/msd2.12135

Tolulope Olamide Adeloye

引用次数: 0