Article
Engineering, Civil
Su-Mei Wang, Yi-Qing Ni, Yuan-Feng Duan, Jong-Dar Yau
Summary: This paper presents a train-track-bridge interaction model that considers the coach-coupler effect for stochastic dynamic analysis of a train traveling over a bridge. The model utilizes the VFIFE method and simulates rail irregularities using the Karhunen-Loève expansion method. Through the proposed model, the dynamic interaction of the TTB system can be analyzed simply and efficiently under resonant vibration conditions.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2021)
Article
Engineering, Civil
Y. F. Duan, S. K. Wu, S. M. Wang, J. D. Yau, Y. Q. Ni, C. B. Yun
Summary: This paper presents an analysis of train-induced dynamic response and fatigue damage for hangers of a tied-arch railway bridge. The study reveals the differences in fatigue lives under different train speeds.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2022)
Article
Engineering, Marine
Pu Xu, Zhixin Du, Ting Zhang, Baochun Chen
Summary: In this study, an extended J-lay model based on the vector mechanics principle is developed to investigate the dynamic behaviors of pipelines on sloping seabeds. Two representative types of seabed slopes are considered - positive and negative slopes. The model divides the laying pipeline into mass particles linked by massless elements and calculates the deformations and rotations of these particles to obtain internal forces. The influences of seabed slope type and angle on pipeline responses are quantitatively estimated through the simulation of two cases. Significant differences in pipeline behaviors between positive and negative sloping seabeds are observed, providing intuitive evidence of the seabed slope effects on deepwater J-laying pipelines.
Article
Engineering, Civil
Yang Yu, Zhenmian Li, Jianxing Yu, Leige Xu, Mingren Zhao, Yupeng Cui, Han Wu, Qinghao Duan
Summary: This study investigates the buckling behaviors of subsea pipelines with integral buckle arrestors under external pressure. Results show that the VFIFE model can accurately predict buckling loads and simulate buckling modes for pipelines with diameter-to-thickness ratios greater than 20, but may underestimate structural strength for pipelines with smaller ratios. The VFIFE offers a new, practical, and universal analytic strategy for subsea pipeline buckling analysis.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Marine
Pu Xu, Zhixin Du, Fuyun Huang, Ahad Javanmardi
Summary: S-lay and J-lay systems are being increasingly used for deepwater pipeline installation. This paper presents a simple and feasible model for the static and dynamic analysis of S-lay and J-lay pipelines, taking into account internal and external forces. Two numerical models are created to illustrate the installation process and verify the accuracy of the VFIFE model, providing valuable references for offshore pipeline design.
Article
Engineering, Marine
Yang Yu, Shengbo Xu, Jianxing Yu, Weipeng Xu, Lixin Xu, Leige Xu
Summary: The study on the dynamics of the SCR using the VIFIE method demonstrates its effectiveness in capturing the interaction between the riser and seabed. The distribution of mass damping coefficients influences the stability of SCR in dynamic analysis. Combining coarse meshes and fine meshes can improve computational efficiency.
Article
Engineering, Civil
Akshay Sakhare, Piyush Punetha, Naveen Kumar Meena, Sanjay Nimbalkar, G. -R. Dodagoudar
Summary: This paper investigates the dynamic behavior of transition zones in integral abutment railway bridges using finite element analyses. The study shows that the behavior of the bridge is influenced by the length of the approach slab, backfill soil type, and train speed. These findings enhance the understanding of the bridge's behavior and identify important parameters that affect its performance.
TRANSPORTATION GEOTECHNICS
(2023)
Article
Engineering, Marine
Xiaoyuan Gao, Zhe Cheng, Linchong Cao, Wenyong Tang
Summary: This study investigates the two-dimensional nonlinear deformation of marine inflatable membrane structures. The vector form intrinsic finite element method with pseudo-dynamic stiffness damping is used to obtain steady-state solutions for quasi-static problems. Various marine membrane structures are simulated and the interaction between fluid loads and deformed structures is considered. The results show that the simplified two-dimensional profile model is effective in obtaining satisfactory deformation results and the method provides a better understanding of deformation behavior for the design of marine membrane structures.
Article
Engineering, Marine
Yang Yu, Shengbo Xu, Jianxing Yu, Weipeng Xu, Lixin Xu, Leige Xu
Summary: This study uses the VFIFE method to establish an SCR model and investigates the influence of trenches on the SCR. The results show that trenches developed by heave motion or including LF surge motion have a positive effect in reducing fatigue damage, while trenches considering static platform offset have little influence. The effects of shear strength distribution of trench surface, trench depth, and trench position on the dynamic performance of SCR are also discussed.
Article
Engineering, Civil
Hongmei Zhang, Yi Fang, Yuanfeng Duan
Summary: This study adopts the VFIFE method and a two-directional concrete constitutive model to simulate the hysteretic performance and damage development process of RC shear walls under cyclic loading. The results are in close agreement with experimental tests, providing successive evidence for damage process simulation in RC structures.
Article
Chemistry, Multidisciplinary
Xiangyan Fan, Laijun Liu, Xiaodan Wang, Jincheng Cao, Wenjie Cheng
Summary: This study integrates finite element software ABAQUS with multi-body dynamics software Universal Mechanism (UM) to construct a joint simulation model of the train-track-overhead system. The findings demonstrate the sensitivity of the train body's response to track irregularity and the influence of speed on system safety.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Civil
Huile Li, Tianyu Wang, Huan Yan
Summary: This paper proposes a multiscale finite element modeling method for coupled vibration analysis of train and cracked bridge systems. The framework incorporates a frictional surface-surface contact model to capture the nonlinear breathing phenomenon of cracks. The results show that cracks have a significant influence on the vehicle acceleration response, derailment factor, and offload factor.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2023)
Article
Engineering, Civil
Yan Zhang, Deshen Chen, Hongliang Qian
Summary: In this study, an effective computational method based on the VFIFE method was proposed for analyzing the large deformation problem of non-prestressed cable net structures. Numerical analyses and model experiments on various cable net structures verified the accuracy and feasibility of the method.
ENGINEERING STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Wenliang Ma, Zihan Sun, Han Wu, Leige Xu, Yong Zeng, Yanxing Wang, Guangyin Huang
Summary: This study investigates the buckling behavior of thin-walled circular shells under local axial compression using the vector form intrinsic finite element (VFIFE) method, which introduces a multilinear hardening model while considering geometric and material nonlinearity. A buckling analysis program based on the VFIFE method is developed and verified through experimental comparison. The program is then used to study the buckling mode and postbuckling behavior of thin-walled circular shells. The results demonstrate that the VFIFE method with a multilinear hardening model can accurately calculate the buckling load and simulate the buckling development process, providing significant advantages in predicting postbuckling behavior.
Article
Mechanics
Mien-Li Wang, Ching-Chiang Chuang, Jyh-Jone Lee
Summary: The paper introduces the vector form intrinsic finite element (VFIFE) method for solving nonlinear structural problems. It focuses on developing a stability condition for the explicit central difference method used in VFIFE. The method's accuracy, stability, and efficiency are verified through numerical examples of nonlinear structural problems.
JOURNAL OF MECHANICS
(2021)
Article
Construction & Building Technology
Zhi-Feng Tang, Xiao-Dong Sui, Yuan-Feng Duan, Peng-fei Zhang, Chung Bang Yun
Summary: A magnetostrictive transducer-based guided wave method is proposed for cable damage detection in civil engineering structures, along with a wave energy-based approach for damage localization and severity assessment. Numerical and experimental studies confirmed the accuracy of determining damage locations and conditions using this method.
STRUCTURAL CONTROL & HEALTH MONITORING
(2021)
Article
Engineering, Civil
Y. F. Duan, S. K. Wu, S. M. Wang, J. D. Yau, Y. Q. Ni, C. B. Yun
Summary: This paper presents an analysis of train-induced dynamic response and fatigue damage for hangers of a tied-arch railway bridge. The study reveals the differences in fatigue lives under different train speeds.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2022)
Article
Engineering, Marine
Yu Zhang, Wei Shi, Dongsheng Li, Xin Li, Yuanfeng Duan
Summary: The utilization of renewable energy is important for reducing CO2 emissions. Floating offshore wind turbines (FOWTs) are considered the most cost-effective solution for harnessing offshore renewable energy in deep water. This paper proposes a new dynamic model for the catenary mooring line of FOWTs based on the vector form intrinsic finite element method. The model is capable of accurately analyzing the dynamic behavior of mooring lines.
Article
Engineering, Civil
H. M. Zhang, F. Hu, Y. F. Duan, D. W. Shi, G. M. Hu
Summary: An adaptive parallel genetic algorithm (SPGA) was developed to efficiently obtain hysteretic parameters of self-centering shear walls with complex hysteresis characteristics. By improving genetic operators and optimizing strategies, the algorithm successfully addressed issues of identification accuracy and efficiency, demonstrating its superiority.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2022)
Article
Acoustics
Su-Mei Wang, Yi-Qing Ni, You-Gang Sun, Yang Lu, Yuan-Feng Duan
Summary: In this study, a new method for modelling and studying the dynamic coupling interaction of the maglev train-controller-rail-bridge (TCRB) system is proposed. By utilizing vector mechanics principles and vector form intrinsic finite elements, the difficulties in modelling the TCRB system are overcome. The proposed method is validated and evaluated to analyze the resonant characteristics of the maglev system and the conditions for levitation gap resonance.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Engineering, Marine
Yu Zhang, Wei Shi, Dongsheng Li, Xin Li, Yuanfeng Duan, Amrit Shankar Verma
Summary: This paper proposes a novel framework for modeling floating offshore wind turbines (FOWTs) based on the vector form intrinsic finite element (VFIFE) method. The framework includes multi-body dynamics for rigid body motion, VFIFE for structural deformation analysis and governing equation solution. It also considers a dynamic and flexible mooring system model, and verifies and compares the results.
Article
Construction & Building Technology
Jiangpeng Shu, Wei Ding, Jiawei Zhang, Fangzheng Lin, Yuanfeng Duan
Summary: This study proposes a continual-learning-based damage recognition model (CLDRM) for long-term multi-damage recognition in civil infrastructures. By integrating the Learning without Forgetting (LwF) method into the residual network, CLDRM can be continuously trained for multiple recognition tasks, improving accuracy and reducing computational cost and data storage.
STRUCTURAL CONTROL & HEALTH MONITORING
(2022)
Article
Engineering, Civil
Hongmei Zhang, Yi Fang, Yuanfeng Duan
Summary: This study adopts the VFIFE method and a two-directional concrete constitutive model to simulate the hysteretic performance and damage development process of RC shear walls under cyclic loading. The results are in close agreement with experimental tests, providing successive evidence for damage process simulation in RC structures.
Article
Engineering, Civil
Hongmei Zhang, Yi Fang, Yuanfeng Duan, Gongbang Du
Summary: In this study, a hybrid planar model based on VFIFE and MVLE was proposed to simulate the cyclic failure behavior of RC shear walls. The model achieved high calculation efficiency and accurate simulation accuracy. Comparison between experimental and analytical results demonstrated good agreement.
THIN-WALLED STRUCTURES
(2022)
Article
Construction & Building Technology
Shenghao Dong, Yuanfeng Duan, Shilang Xu, Chungbang Yun
Summary: This paper presents the design and manufacturing of a viscous inertial mass-damper (VIMD) prototype. The VIMD allows continuous adjustment of the damper parameters, inertial mass, and viscous damping coefficient. Experimental validations and simulation studies were conducted on a scaled sagged cable with the VIMD for vibration mitigation. The VIMD significantly increased the modal damping ratio of the cable, with achieved maximum values 10 times greater than those of a conventional viscous damper.
STRUCTURAL CONTROL & HEALTH MONITORING
(2023)
Article
Engineering, Civil
Jiaqi Tu, Xian Xu, Chung Bang Yun, Yuanfeng Duan
Summary: This paper presents a method for fatigue crack detection in steel structures using ultrasonic guided waves. The method can accurately detect and locate fatigue cracks, as well as evaluate the severity of the damage.
SMART STRUCTURES AND SYSTEMS
(2023)
Article
Engineering, Civil
Y. F. Duan, S. H. Dong, S. L. Xu, C. B. Yun
Summary: A new optimal design procedure for VIMD parameters for taut cable vibration control is presented in this paper, and the results show that using the proposed optimal VIMD can significantly reduce cable vibration.
SMART STRUCTURES AND SYSTEMS
(2022)
Article
Engineering, Civil
Gaoyang Liu, Yanbo Niu, Weijian Zhao, Yuanfeng Duan, Jiangpeng Shu
Summary: This study proposes a novel approach for anomaly detection in SHM data based on GAN and CNN. The approach includes three modules: establishing three-channel input, training GANomaly for feature extraction, and using CNN for anomaly type classification. Experimental results show that the proposed approach achieves higher accuracy in detecting multi-pattern anomalies in SHM data.
SMART STRUCTURES AND SYSTEMS
(2022)
Article
Engineering, Civil
Jiangpeng Shu, Jun Li, Jiawei Zhang, Weijian Zhao, Yuanfeng Duan, Zhicheng Zhang
Summary: In this study, an active learning method with a difficulty learning mechanism is proposed for crack segmentation tasks. The method can automatically select the most informative crack images from a large dataset for annotation, aiming to overcome the laborious and time-consuming annotation process. Experimental results show that using the proposed method and selecting 40% of the most informative crack images can achieve over 92% performance of crack segmentation networks trained with all crack images.
SMART STRUCTURES AND SYSTEMS
(2022)
Proceedings Paper
Construction & Building Technology
Y. Fang, Y. F. Duan, Y. Q. Xiang, H. Lin
Summary: The submerged floating tunnel (SFT) is an innovative traffic infrastructure in the underwater transportation system. Accurately analyzing its dynamic response is essential for understanding its complex dynamic behavior, and can be verified through testing methods. Hybrid simulation (HS) is a powerful testing method combining numerical simulation and experimental testing, which can be applied to research complex dynamic problems of SFT. Introducing vector form intrinsic finite element (VFIFE) analysis can handle numerical parts with a large number of degrees of freedom.
BRIDGE MAINTENANCE, SAFETY, MANAGEMENT, LIFE-CYCLE SUSTAINABILITY AND INNOVATIONS
(2021)
