Article
Engineering, Mechanical
N. Jamia, H. Jalali, J. Taghipour, M. I. Friswell, H. Haddad Khodaparast
Summary: In modeling assembled structures, it is important to consider the inherent dynamics of the contact interfaces, including linear and nonlinear mechanisms. This paper presents two methods for predicting the nonlinear dynamic response of bolted flange joints. Through detailed finite element modeling and an equivalent model composed of beam elements, accurate representations of linear and nonlinear characteristics of the contact interface are achieved.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Agricultural Engineering
Siyang Ji, Qunying Mou, Guangming Yuan, Haiqing Ren, Xiazhen Li
Summary: This study investigates the dowel-bearing behavior of bolted joints on bamboo scrimber and proposes estimation formulas based on experimental analysis. The results show that bolt diameter, sample thickness, and loading direction have an influence on the dowel-bearing behavior. Additionally, the failure mechanisms differ between samples loaded in parallel and perpendicular to the grain direction.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Engineering, Multidisciplinary
Lei Li, Zhong Luo, Fayong Wu, Fengxia He, Kai Sun
Summary: This study develops a dynamic model of the bolted rotor system considering the piecewise stiffness characteristic and presents a solution methodology incorporating the piecewise stiffness into the incremental harmonic balance method. The frequency spectrum characteristics of the bolted rotor system are revealed, and the effects of unbalance and preload on the dynamic characteristics are discussed.
APPLIED MATHEMATICAL MODELLING
(2023)
Article
Engineering, Mechanical
Seyed-Ehsan Mir-Haidari, Kamran Behdinan
Summary: This research proposes a novel and robust analytical formulation that accurately captures the nonlinear dynamic characteristics of bolted flange connections in aircraft engines. The model demonstrates significant accuracy and precision, as well as computational efficiency, making it feasible for implementing nonlinear analyses of large structural assemblies. The proposed analytical lump model is universal and has been validated using nonlinear experimental test data for an aeroengine casing assembly.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Mechanical
Binbin Zhao, Fayong Wu, Kepeng Sun, Xiaokai Mu, Yuanliang Zhang, Qingchao Sun
Summary: This paper proposed a new friction mechanical model of joint interface to better describe the tangential stiffness softening. An improved tangential stiffness model and the corresponding extraction method of the model parameters based on FEA method was introduced to verify the effectiveness through designed slip test. The research content has a better application prospect in dynamic analysis of connection structures with an improved calculation accuracy by 18.2% compared with the existing model.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Engineering, Multidisciplinary
Wenbo Shi, Zhousuo Zhang
Summary: An accurate understanding of the elastostatic properties for flange-bolted joints is crucial in modeling the nonlinear dynamics. This study investigates the elastostatics of flange and presents a mechanical model based on linear elasticity to understand the bi-linear axial stiffness properties and the influence of bolt preloads on stiffnesses. The analysis shows that the differences in interface contact status and different tensile and compressive stiffnesses induce the bi-linear axial stiffness and coupling deformations, while bolt preloads mainly affect the tensile and bending stiffnesses.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2023)
Article
Engineering, Multidisciplinary
Wu Ce Xing, Jiaxing Wang, Yan Qing Wang
Summary: This paper proposes an effective mathematical model for bolted flange joints to study their vibration characteristics. By modeling the flange and bolted joints, governing equations are derived. Experimental studies confirm that the model can accurately predict the vibration characteristics of multiple-plate structures.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Mechanical
Tao Li, Dongjian Yang, Binbin Zhao, Qingchao Sun, Junzhou Huo, Wei Sun
Summary: This paper studies the dynamic parameter characteristics of the bolted flange joint interface and its variation patterns under external excitation, bolt distribution, and tightening torque. The results suggest that bolt preload significantly affects the stiffness variation of the joint interface.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Civil
Weiliang Zuo, Zhifeng Liu, Yongsheng Zhao, Nana Niu, Mingpo Zheng
Summary: This paper establishes a correlation model between the initial bolt pre-tightening force and the contact stiffness of a bolted flange, and optimizes the tightening strategy of the flange using this model, resulting in increased contact stiffness of the joint surface.
STRUCTURAL ENGINEERING AND MECHANICS
(2022)
Article
Mechanics
Wafaa El Masnaoui, Alain DaidiE, Frederic Lachaud, Christian Paleczny
Summary: This study presents a new semi-analytical model for composite-metal eccentric tensile bolted joints of casing structures, which significantly reduces computation time and provides results in good agreement with 3D FE computations for design purposes. However, less accurate results were observed for the axial displacement of the composite flange, suggesting the need for a new formulation in future work.
COMPOSITE STRUCTURES
(2021)
Article
Acoustics
Jiacheng Pan, Zhenqun Guan, Weicheng Sun, Zeng Yan
Summary: This paper investigates the near-resonant response of a dual-joint system driven by harmonic excitation. By considering the effect of nonlinear connection stiffness, a lump mass model is established to capture the interaction between different modes and internal resonances. The study shows that under specific excitation conditions, the dynamic behavior of the system can significantly change.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Engineering, Mechanical
Dongwu Li, Daniele Botto, Ruozhang Li, Chao Xu, Wenming Zhang
Summary: This paper presents experimental and theoretical modeling studies on the tangential contact stiffness and friction hysteresis of bolted joint interfaces under transversal vibration. A new test rig was developed to measure the interface fretting response of bolted joints. A multi-scale contact modeling method was proposed to calculate the tangential contact stiffness and reproduce the friction hysteresis of bolted joint interfaces. The effectiveness of the proposed method was verified by comparing the simulation results with the experimental counterparts in different cases of tangential loading.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Energy & Fuels
Thanh-Tuan Tran, Hongbae Park, Daeyong Lee
Summary: This study investigates the effects of flange surface flatness on the behavior of L-type flange joints using numerical simulations. A finite element model of a 5 MW L-type flange joint is established and verified through comparison with experimental tests. The influences of geometrical imperfections (flange-sided gap, tower-sided gap) and the impact of flange gap opening length are examined. Results indicate that the flange-sided gap outperforms the tower-sided gap, reducing stress concentration in the bolt. The stresses in flange-sided gapping joints increase with an increase in the opening length.
Article
Engineering, Mechanical
Dongwu Li, Chao Xu, Ruozhang Li, Wenming Zhang
Summary: A new random fretting test method was developed in this study to investigate the evolution of contact parameters in bolted joint interfaces under wear. The effects of initial bolt preload, excitation level, and surface roughness on the contact parameters were discussed. This research is of great importance for understanding the fretting wear behavior of bolted joints and dynamic analysis of joint-dominated structures.
Article
Engineering, Manufacturing
Muhsin Aljuboury, Md Jahir Rizvi, Stephen Grove, Richard Cullen
Summary: The goal of this experimental study is to manufacture a bolted GFRP flange connection for composite pipes with high strength and performance. The study involved designing and fabricating a mould to ensure quality, using ASME standards for fabrication, conducting experiments to improve the process, and comparing drilling methods. The final product was a pressure vessel with acceptable quality and performance for testing under various conditions.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2021)
Article
Construction & Building Technology
Gang Li, Mengchen Wang, Yan Zeng, Yi Jiang, Hao Hu
STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS
(2017)
Article
Acoustics
Xu Lu, Yan Zeng, Yan Chen, Xuefeng Xie, Zhenqun Guan
JOURNAL OF SOUND AND VIBRATION
(2017)
Article
Mechanics
Y. Zeng, W. Q. Zhu
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2010)
Article
Mechanics
Y. Zeng, W. Q. Zhu
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
(2011)
Article
Engineering, Mechanical
Y. Zeng, W. Q. Zhu
PROBABILISTIC ENGINEERING MECHANICS
(2010)
Article
Engineering, Mechanical
Y. Zeng, G. Li
PROBABILISTIC ENGINEERING MECHANICS
(2013)
Article
Computer Science, Interdisciplinary Applications
Gang Li, Wanxin He, Yan Zeng
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
(2019)
Article
Engineering, Multidisciplinary
Gang Li, Chunxiao Zhou, Yan Zeng, Wanxin He, Haoran Li, Ruiqiong Wang
APPLIED MATHEMATICAL MODELLING
(2019)
Article
Engineering, Multidisciplinary
G. Li, Y. X. Wang, Y. Zeng, W. X. He
Summary: The paper proposes a new method based on fractional moment-based maximum entropy method to improve the estimation accuracy of multimodal probability density functions, by optimizing the fitting of the probability density function curve through adjusting translation parameters.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Acoustics
Jiacheng Pan, Zhenqun Guan, Weicheng Sun, Zeng Yan
Summary: This paper investigates the near-resonant response of a dual-joint system driven by harmonic excitation. By considering the effect of nonlinear connection stiffness, a lump mass model is established to capture the interaction between different modes and internal resonances. The study shows that under specific excitation conditions, the dynamic behavior of the system can significantly change.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Acoustics
Weicheng Sun, Zhenqun Guan, Yan Chen, Jiacheng Pan, Yan Zeng
Summary: The proposed finite element model accurately predicts the dynamic response of the bolted flange connection structure used in aerospace and rocket design. It simulates the tightening process ignored in traditional models, showing changes in contact state and identifying loosening efficiently using high-frequency domain analysis.
SHOCK AND VIBRATION
(2022)
Article
Chemistry, Multidisciplinary
Weicheng Sun, Zhenqun Guan, Yan Zeng, Jiacheng Pan, Zhonghai Gao
Summary: This paper presents a bolt-loosening Support Vector Machines' conduct detection method with feature vectors comprising eigenvalue decomposition based on VMD and SVD, combined with permutation entropy. The effectiveness of the method is verified through experiments and it shows a high identification rate for bolt-loosening.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Mechanical
Rosaria Del Toro, Maria Laura De Bellis, Marcello Vasta, Andrea Bacigalupo
Summary: This article presents a multifield asymptotic homogenization scheme for analyzing Bloch wave propagation in non-standard thermoelastic periodic materials. The proposed method derives microscale field equations, solves recursive differential problems within the unit cell, establishes a down-scaling relation, and obtains average field equations. The effectiveness of this approach is validated by comparing dispersion curves with those from the Floquet-Bloch theory.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Yue Bao, Zhengcheng Yao, Yue Zhang, Xueman Hu, Xiandong Liu, Yingchun Shan, Tian He
Summary: This paper proposes a novel triple-gradient phononic acoustic black hole (ABH) beam that strategically manipulates multiple gradients to enhance its performance. The study reveals that the ABH effect is not solely brought about by the thickness gradient, but also extends to the power-law gradients in density and modulus. The synergistic development of three different gradient effects leads to more pronounced and broader bandgaps in PCs.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Matthias Ryser, Jason Steffen, Bekim Berisha, Markus Bambach
Summary: This study investigates the feasibility of replacing complex experiments with multiple simpler ones to determine the anisotropic yielding behavior of sheet metal. The results show that parameter identifiability and accuracy can be achieved by combining multiple specimen geometries and orientations, enhancing the understanding of the yield behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Wenjun Li, Pengfei Zhang, Siyong Yang, Shenling Cai, Kai Feng
Summary: This study presents a novel two-dimensional non-contact platform based on Near-field Acoustic Levitation (NFAL), which can realize both one-dimensional and two-dimensional transportation. Numerical and experimental results prove the feasibility and ease of this method.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Shuo Liu, Lu Che, Guodong Fang, Jun Liang
Summary: This study presents a novel lamina conjugated bond-based peridynamic (BB-PD) model that overcomes the limitations of material properties and is applicable to composite laminates with different stacking sequences. The accuracy and applicability of the model are validated through simulations of elastic deformation and progressive damage behavior, providing an explanation of the damage modes and failure mechanisms of laminated composite materials subjected to uniaxial loading.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Omar El-Khatib, S. Kumar, Wesley J. Cantwell, Andreas Schiffer
Summary: Sandwich-structured honeycombs (SSHCs) are hierarchical structures with enhanced mass-specific properties. A model capable of predicting the elastic properties of hexagonal SSHCs is presented, showing superior in-plane elastic and shear moduli compared to traditional honeycombs, while the out-of-plane shear moduli are reduced.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Zhi-Jian Li, Hong-Liang Dai, Yuan Yao, Jing-Ling Liu
Summary: This paper proposes a process-performance prediction model for estimating the yield strength and ultimate tensile strength of metallic parts fabricated by powder bed fusion additive manufacturing. The effect of main process variables on the mechanical performance of printed metallic parts is analyzed and the results can serve as a guideline for improvement. The accuracy of the proposed model is validated by comparison with literature.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Saman A. Bapir, Kawa M. A. Manmi, Rostam K. Saeed, Abdolrahman Dadvand
Summary: This study numerically investigates the behavior of an ultrasonically driven gas bubble between two parallel rigid circular walls with a cylindrical micro-indentation in one wall. The primary objective is to determine the conditions that facilitate the removal of particulate contamination from the indentation using the bubble jet. The study found that the bubble jet can effectively remove contamination from the indentation for certain ranges of indentation diameter, but becomes less effective for larger indentation diameters.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
E. Polyzos, E. Vereroudakis, S. Malefaki, D. Vlassopoulos, D. Van Hemelrijck, L. Pyl
Summary: This research investigates the elastic and damage characteristics of individual composite beads used in 3D printed composites. A new analytical probabilistic progressive damage model (PPDM) is introduced to capture the elastic and damage attributes of these beads. Experimental results show strong agreement with the model in terms of elastic behavior and ultimate strength and strain.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)