Article
Mathematics, Applied
Dongxing Cao, Junru Wang, Xiangying Guo, S. K. Lai, Yongjun Shen
Summary: This article provides a comprehensive review of the flow-induced vibration (FIV) effect for energy harvesting, including different classifications of FIV and the development of related energy harvesting techniques. It also discusses the application of hybrid techniques and nonlinear designs to improve the harvesting performance, as well as briefly mentioning the advanced FIV-based energy harvesting studies for fluid engineering applications. Finally, conclusions and future outlook are summarized.
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
(2022)
Article
Chemistry, Analytical
Oybek Eraliev, Kwang-Hee Lee, Chul-Hee Lee
Summary: In this study, a vibration-based early stage of bolt loosening detection and identification technique is proposed using machine learning algorithms. Experimental data analysis and classifier training were conducted to achieve the detection and identification of bolt loosening.
Article
Construction & Building Technology
Japsimran Singh, Matthew H. Hebdon
Summary: This research reviewed the causes of several ancillary structure collapses in the past two decades, with a focus on the issue of loose anchor nuts. Approximately 30% of anchor nuts in the inspected structures were found to be loose, with the exact cause still unknown. Through testing 100 galvanized steel anchor rods of different diameters and grades, the study aimed to identify the relationship between applied torque, nut rotation, and rod pretension.
JOURNAL OF STRUCTURAL ENGINEERING
(2021)
Article
Mechanics
Jingjing Feng, Huajian Yu, Yanjie Li, Wei Zhang
Summary: This study investigates the nonlinear oscillation behavior and detection sensitivity of mass sensors based on carbon nanotubes. By introducing geometric nonlinearities and size effects, a dynamic model is established, and nonlinear response equations and frequency shift equations are obtained. Molecular dynamics simulations are used to verify the nonlinear oscillation behavior of the sensors.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Mechanical
Oyvind Karlsen, Hirpa G. Lemu
Summary: This paper investigates the application of anti-loosening bolt system in Offshore Floating Wind Power Systems. By testing different bolt dimensions, the results show that the novel bolt system has superior capacity to withstand self-loosening compared to standard bolts.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Mechanical
Hao Gong, Jianhua Liu, Huihua Feng, Jiayu Huang
Summary: This paper investigates the self-loosening mechanism of bolted joints and proposes the concept of radial slippage propagation. The results show that the propagation of slippage areas can lead to self-loosening. By developing a novel thread structure, the slippage propagation can be effectively blocked to improve the performance of bolted joints.
Article
Acoustics
Han Meng, Xiuchang Huang, Yanyu Chen, Stephanos Theodossiades, Dimitrios Chronopoulos
Summary: This study investigates the effects of incorporating negative stiffness oscillators into continuous multilayered vibrating structures, comparing their performance against linear oscillators in a broadband sense.
Article
Engineering, Mechanical
Michael Kwarta, Matthew S. Allen
Summary: This work presents a novel technique for nonlinear system identification in the frequency domain. The algorithm fits a model to measured spectra, estimating both polynomial coefficients and the underlying linear Frequency Response Function (FRF). The proposed algorithm, NIXO, estimates the nonlinear parameters as real and frequency-independent, addressing the limitations of the existing NIFO algorithm.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Civil
Zachary Dietrich, Brent M. Phares, Zhengyu Liu
Summary: Transportation departments across the United States are facing the issue of loose nuts on critical support structures for overhead signs. This poses a drain on resources and increases the risk of failure. The objective of this study was to evaluate and improve anchor-rod tightening procedures to prevent loosening.
TRANSPORTATION RESEARCH RECORD
(2023)
Review
Engineering, Mechanical
Hao Gong, Xiaoyu Ding, Jianhua Liu, Huihua Feng
Summary: This review article focuses on the loosening of threaded fasteners as a key failure mode, dividing it into non-rotational and rotational loosening parts, summarizing the causes and mechanisms of various types of loosening in order to help new researchers and engineers better understand the current research status on loosening of threaded fasteners.
Review
Engineering, Mechanical
Cyril Touze, Alessandra Vizzaccaro, Olivier Thomas
Summary: This paper reviews nonlinear methods for model order reduction in structures with geometric nonlinearity, with a special focus on techniques based on invariant manifold theory. It first discusses the historical development and specific applications of invariant manifolds, and then addresses the specific case of structures discretised with the finite element method. The paper concludes by detailing recent developments in direct computation of reduced-order models relying on invariant manifolds theory.
NONLINEAR DYNAMICS
(2021)
Article
Engineering, Civil
Zhifeng Liu, Xing Yan, Mingpo Zheng, Yuezhen Wang, Wentao Chen, Ying Li
Summary: Bolt loosening is a common failure mode in bolted joints, and this study investigated the impact of load control modes and lubrication conditions on bolt loosening through experiments. The study also conducted experiments and finite element analysis on the re-tightening of bolts after loosening. Results showed that oil lubrication can help increase the bolt clamping force, but the number of re-tightening should be limited to avoid fatigue fracture.
Article
Mechanics
Mohammad Parsa Rezaei, Grzegorz Kudra, Krzysztof Witkowski, Jan Awrejcewicz
Summary: This paper investigates the use of shear thickening fluid (STF) dampers to reduce vibrations in beam-based structures. The design and analysis of these systems are challenging due to the viscosity changes in STF with varying vibration frequencies. The behavior of STF dampers in different support configurations is analyzed, and the governing equations are derived and solved using Galerkin/Hencky's discretization methods. The findings reveal surprising dynamic behavior and suggest that the performance of STF dampers can be accurately predicted by analyzing the shape of force-velocity curves.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2023)
Article
Engineering, Geological
Fei-Fan Meng, Qingxuan Shi
Summary: This paper investigates the response suppression effectiveness of inerter system on nonlinear structures under random excitation and proposes a response analysis method suitable for inerter system. Numerical results show that the response suppression effectiveness of inerter system is robust to nonlinear structures.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Acoustics
Hui Li, Haiyu Lv, Hai Sun, Zhaoye Qin, Jian Xiong, Qingkai Han, Jinguo Liu, Xiangping Wang
Summary: This paper investigates the nonlinear vibrations of fiber-reinforced composite cylindrical shells with bolted joint boundary conditions, considering the nonlinear amplitude-dependent material property of FRCs and partial bolt loosening conditions. The study uses theoretical modeling and experimental validation to analyze the effects of bolt loosening degree and number on natural frequencies, damping ratios, and resonant response amplitudes of FRCCS structures. The results show that increased bolt loosening leads to decreased natural frequencies, increased damping ratios, and resonant response amplitudes due to the coupling effect of decreased boundary stiffness and increased boundary damping.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Engineering, Biomedical
L. Xi, P. De Falco, E. Barbieri, A. Karunaratne, L. Bentley, C. T. Esapa, N. J. Terrill, S. D. M. Brown, R. D. Cox, G. R. Davis, N. M. Pugno, R. V. Thakker, H. S. Gupta
ACTA BIOMATERIALIA
(2018)
Article
Materials Science, Multidisciplinary
F. Ongaro, E. Barbieri, N. M. Pugno
MECHANICS OF MATERIALS
(2018)
Article
Multidisciplinary Sciences
Sherif Elsharkawy, Maisoon Al-Jawad, Maria F. Pantano, Esther Tejeda-Montes, Khushbu Mehta, Hasan Jamal, Shweta Agarwal, Kseniya Shuturminska, Alistair Rice, Nadezda Tarakina, Rory M. Wilson, Andy J. Bushby, Matilde Alonso, Jose C. Rodriguez-Cabello, Ettore Barbieft, Armando del Rio Hernandez, Molly M. Stevens, Nicola M. Pugno, Paul Anderson, Alvaro Mata
NATURE COMMUNICATIONS
(2018)
Article
Mathematics, Interdisciplinary Applications
Ettore Barbieri, Leonardo Ventura, Davide Grignoli, Emiliano Bilotti
COMPUTATIONAL MECHANICS
(2019)
Article
Materials Science, Multidisciplinary
Ettore Barbieri
FRONTIERS IN MATERIALS
(2019)
Article
Engineering, Biomedical
Sheetal R. Inamdar, Ettore Barbieri, Nicholas J. Terrill, Martin M. Knight, Himadri S. Gupta
ACTA BIOMATERIALIA
(2019)
Article
Engineering, Biomedical
Yanhong Wang, Yi Zhang, Nicholas J. Terrill, Ettore Barbieri, Nicola M. Pugno, Himadri S. Gupta
ACTA BIOMATERIALIA
(2019)
Article
Nanoscience & Nanotechnology
Sayantan Pradhan, Leonardo Ventura, Francesca Agostinacchio, Meng Xu, Ettore Barbieri, Antonella Motta, Nicola M. Pugno, Vamsi K. Yadavalli
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Endocrinology & Metabolism
L. Xi, P. De Falco, E. Barbieri, A. Karunaratne, L. Bentley, C. T. Esapa, G. R. Davis, N. J. Terrill, R. D. Cox, N. M. Pugno, R. V. Thakker, R. Weinkamer, W. W. Wu, D. N. Fang, H. S. Gupta
Article
Materials Science, Multidisciplinary
Giulia Salussolia, Ettore Barbieri, Nicola Maria Pugno, Lorenzo Botto
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2020)
Article
Mechanics
Ettore Barbieri
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2020)
Article
Engineering, Mechanical
Diego Misseroni, Ettore Barbieri, Nicola Maria Pugno
Summary: Through experiments and analysis, researchers discovered unique shapes formed by a cantilever beam under a large shear follower force. By designing and validating an apparatus capable of generating transverse follower force, they confirmed the accuracy of their predictions by comparing experimental results with analytical solutions.
EXTREME MECHANICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Ettore Barbieri, Jingyi Mo, Himadri S. Gupta
Summary: The connective tissues of sea cucumbers can change their mechanical states based on the chemical changes in the water. This study explores the causes beyond cross-linking by using Small-angle X-ray Scattering measurements and molecular extended reptation theory. It is found that increased cross-linking leads to stiffening in potassium-ions enriched seawater, while decreased cross-linking results in softening in calcium-ions deprived seawater.
MECHANICS OF MATERIALS
(2022)
Article
Mechanics
Ettore Barbieri, Lorenzo Botto
Summary: This study analyzes the relationship between potential energy and external forces in the non-dissipative regime and proposes a simple formula to calculate the strain energy release rate of peeled strips. By applying Griffith's criterion for fracture, critical loads for peeling in different scenarios are calculated, and formulas that are independent of the initial length are obtained. The research is significant for predicting the critical hydrodynamic load necessary to exfoliate graphene sheets from graphite.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Mechanics
Ettore Barbieri, Leonardo Ventura, Emiliano Bilotti
Summary: This study presents an approach to simulate folding as sharp discontinuities in the Euler rotations of nonlinear plates. By discovering a set of constraints that the rotation jumps must satisfy on a crease and implementing them using a meshfree method, the proposed idea was shown to work well for different configurations.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)