Article
Chemistry, Multidisciplinary
Slawomir Tarkowski, Aleksander Nieoczym, Jacek Caban, Petr Jilek, Marie Sejkorova
Summary: The article presents the results of simulations using the finite element method (FEM) to investigate the damage caused to the wheel rim by hitting an obstacle. These results can be used as comparative data for expert opinions on the cause of the damage. Additionally, the data obtained from the FEM simulation can aid in the geometric optimization of the rim to create a rim that is resistant to this type of damage.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Multidisciplinary
Zhijun Liu, Zhichun Guan, Peng Zhang, Cong Sun, Feng Liu, Shan Lin
Summary: Modeling and prediction of dynamic behaviors of cracked bodies are crucial for structural safety evaluation. The numerical manifold method (NMM) has been successful in crack analysis, but conventional strain smoothing cannot accurately reproduce the strain variations around crack tips. Therefore, crack-tip enrichment can improve accuracy, and combining compatible strain with edge-based smoothed strain is desirable.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2021)
Article
Mechanics
Yaoji Deng, Zhiyue Wang, Tao Liu, Wenrong Liang, Hui Shen, Zhen Xiao
Summary: The influence of local damage on the static and dynamic characteristics of honeycomb non-pneumatic tires was studied using the finite element method. The research provides a basis for structural design and optimization, health monitoring, and fault diagnosis of non-pneumatic tires. The results show that spoke damage has different effects on the static and dynamic characteristics of non-pneumatic tires.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2023)
Article
Engineering, Mechanical
Zhou Zheng, Subhash Rakheja, Ramin Sedaghati
Summary: The study utilized three-dimensional finite element models to analyze the performance of honeycomb structured wheels, showing that their vertical and longitudinal stiffness can be comparable to pneumatic wheels, but with significantly higher lateral and cornering stiffness which may lead to loss of directional control under high side-slip conditions.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
(2021)
Article
Engineering, Mechanical
X. Liu, C. Liu, W. Wu, J. Z. Liu, S. C. Sun, Y. G. Wei
Summary: Compared to tracking the contact force, monitoring axle box acceleration (ABA) is an effective way to determine the operation status of a high-speed train passing a weld. This study proposes a finite element model for studying the dynamic response of a full wheelset passing weld irregularities at high speed. Simulations provide detailed dynamic information during the pass, such as the peak of the contact force and the history of acceleration. With these simulation results, a standard safety limit for the running speed is proposed: a running speed boundary as a function of defect size. Additionally, rail weld defect grinding standards should depend on the running speeds.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Chemistry, Physical
Hongye Chen, Lan Zhang, Pan Guo, Mengru Zhao, Zhixin Chen, Huizhong Ma
Summary: In this study, the electrochromic and mechanical properties of sputtered tungsten oxide (WO3) films on substrates with different surface roughness were investigated. Results showed that tungsten oxide films deposited on fluorine-doped tin oxide with a surface roughness of 21.4 nm exhibited superior electrochromic properties. The film had an optical contrast of 77.1% at 700 nm, and a coloration efficiency of 157.9 cm2C-1. Moreover, it showed good durability and had a smaller decrease in current density and coloration state transmittance compared to other films.
SURFACES AND INTERFACES
(2023)
Article
Mathematics
Jorge Grasa, Begona Calvo
Summary: The study compared the dynamic implicit and dynamic explicit solutions for simulating the movement of the eye ball induced by the extraocular muscles. The results showed that the implicit dynamic method achieved a significant reduction in computational time while producing similar simulation outcomes.
Article
Engineering, Multidisciplinary
Junqi Zhang, Ankit Ankit, Hauke Gravenkamp, Sascha Eisentraeger, Chongmin Song
Summary: This paper introduces a parallel explicit solver utilizing the advantages of balanced octree meshes and employing the scaled boundary finite element method (SBFEM). By pre-computing the stiffness and mass matrices of unique cell patterns, the hanging nodes problem in standard finite element analysis is avoided. The proposed scheme is implemented in a distributed computing environment and its performance is evaluated through various numerical benchmark examples.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Mathematics, Applied
S. Falletta, G. Monegato, L. Scuderi
Summary: We consider wave propagation problems in 2D unbounded isotropic homogeneous elastic media with rigid boundary conditions. Two alternative numerical approaches are proposed and compared, both obtained by coupling the differential equation with the associated space-time boundary integral equation. The integral equation defines a non-reflecting boundary condition for incoming and outgoing waves. The construction and implementation of these approaches are described and discussed, and numerical tests are conducted.
COMPUTERS & MATHEMATICS WITH APPLICATIONS
(2022)
Article
Computer Science, Interdisciplinary Applications
Gregory S. Shallcross, Jesse Capecelatro
Summary: The characteristic-based volume penalization combined with a high-order energy-stable finite difference framework is a computationally efficient method for compressible flows. It improves stability by avoiding increased stiffness associated with boundary treatment and does not require modifications to the computational stencil.
JOURNAL OF COMPUTATIONAL PHYSICS
(2022)
Article
Multidisciplinary Sciences
Xueliang Gao, Yingming Wang, Ye Zhuang, Weiguang Fan, Zhenxin Long, Xudong Li, Zhichao Zhang, Yongqing Zhang
Summary: This study proposes a simplified structural dynamic model of the load wheel and captures the rolling deformation characteristics of the load wheel using a non-contact rubber tread rolling dynamics test rig. The digital image correlation method is used to calculate the strain rate variations of the rubber tread under different loads, speeds, and carbon black components. The feasibility of the simplified structural dynamic model is evaluated by comparing the strain rate obtained from non-contact measurements with the simulation results. The accuracy and validity of the simplified structural dynamic model are demonstrated through comparison with the tread mechanical model and full-field strain distribution.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Haoming Yang, Yao Zhang, Zhuangzhuang Wang, Xiaofei Cao, Ying Li
Summary: This study explores three different design methods for dual-phase composite metamaterials inspired by the phase boundary sliding effect of magnesium nanocrystals, hierarchical cauliflowers, and interpenetrating hierarchical nanocages. The results indicate that increasing the connectivity, phase boundary area, and continuous distribution characteristics of the reinforcement phase are effective approaches to improve the mechanical properties and energy absorption characteristics of the metamaterials. Additionally, introducing the interpenetrating lattice at specific positions can regulate the deformation processes and failure modes and enhance stiffness and energy absorption.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Snezana Vulovic, Miroslav Zivkovic, Ana Pavlovic, Rodoljub Vujanac, Marko Topalovic
Summary: Crawler travel gear is a heavy vehicle propulsion commonly found in tanks, excavators, and off-road vehicles. It has advantages in weight distribution over soft terrain but may damage paved roads and requires reliability verification due to its complex design and heavy weight. This paper presents a methodology for FEM analysis of parts of an eight-wheel bogie according to DIN 22261-2 standard.
Article
Engineering, Mechanical
Xiangyun Deng, Yi-Qing Ni, Xiubo Liu
Summary: This study uses a validated finite element method to evaluate the wheel-rail slip behaviors and focus on the contact during wheel traction. The factors affecting wheel slips, such as friction and traction coefficients, are investigated. The study reveals that wheel slips can occur even when the traction coefficient is slightly smaller than the limiting value. The study provides insights into the wheel slip mechanism and theoretical guidance for the development of more accurate control methods.
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME
(2022)
Article
Multidisciplinary Sciences
Chittaranjan B. Nayak, S. N. Khante
Summary: This study presents the dynamic analysis of plates with and without cutouts using finite element method, showing significant differences in behavior in terms of time period, amplitude, and bending moment compared to static analysis in transient analysis.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Mechanical
Youqun Zhao, Han Xu, Yaoji Deng, Qiuwei Wang
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
(2019)
Article
Engineering, Mechanical
Yao-Ji Deng, You-Qun Zhao, Han Xu, Ming-Min Zhu, Zhen Xiao
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
(2019)
Article
Computer Science, Interdisciplinary Applications
Zhen Xiao, Youqun Zhao, Fen Lin, Mingmin Zhu, Yaoji Deng, Liguo Zang
ENGINEERING COMPUTATIONS
(2019)
Article
Computer Science, Interdisciplinary Applications
Zhu Mingmin, Zhao Youqun, Lin Fen, Xiao Zhen, Deng Yaoji
SIMULATION MODELLING PRACTICE AND THEORY
(2019)
Article
Engineering, Mechanical
Qiuwei Wang, Youqun Zhao, Han Xu, Yaoji Deng
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2019)
Article
Engineering, Mechanical
Yaoji Deng, Youqun Zhao, Han Xu, Fen Lin, Qiuwei Wang
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART K-JOURNAL OF MULTI-BODY DYNAMICS
(2020)
Article
Multidisciplinary Sciences
Yaoji Deng, Youqun Zhao, Mingmin Zhu, Zhen Xiao, Qiuwei Wang
DEFENCE SCIENCE JOURNAL
(2020)
Article
Engineering, Multidisciplinary
Yao-ji Deng, You-qun Zhao, Fen Lin, Li-guo Zang
Summary: This study proposes a new type of flexible road wheel with a wheel-hinge-hub combined structure for the independent development of tracked vehicles. The vibration model characteristics of the flexible road wheel are investigated through numerical simulation and experiments. The study establishes a detailed finite element model and solves the free vibration equation using the Lanczos vector direct superposition method. The effects of various key factors on the natural frequencies are studied, and a comparison is made between the flexible road wheel and the rigid road wheel. The research provides a theoretical basis for vibration and noise reduction in flexible road wheels.
DEFENCE TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Shaobo Wang, Fen Lin, Tiancheng Wang, Youqun Zhao, Liguo Zang, Yaoji Deng
Summary: This paper proposes an improved local path planning algorithm based on drivers' characteristics and artificial potential field (APF). By collecting a large amount of driver data and training a neural network model, it can adapt to manual driving vehicles with different driving styles and has been compared with the traditional APF planning method.
Review
Engineering, Manufacturing
Zhen Xiao, Wenhui Yu, Hongxun Fu, Yaoji Deng, Yongling Wu, Hongyu Zheng
Summary: This review provides an in-depth insight into laser powder bed fusion (LPBF) technology and its applications with aluminium alloys. It discusses the influence of thermal dynamics on microstructure in LPBF and summarizes the methods to refine microstructures in LPBF fabrication of various aluminium alloys. The review concludes with a summary of microstructural control and an outlook on the challenges and potential research topics in LPBF with Al alloys.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Review
Materials Science, Multidisciplinary
Yaoji Deng, Zhiyue Wang, Hui Shen, Junjie Gong, Zhen Xiao
Summary: Non-pneumatic tyre technology can overcome the safety problems of traditional pneumatic tyres and significantly improve driving safety. In recent years, this technology has received extensive attention. This paper reviews the status of research of non-pneumatic tyres and discusses their development trends.
MATERIALS & DESIGN
(2023)
Article
Mechanics
Yaoji Deng, Zhiyue Wang, Tao Liu, Wenrong Liang, Hui Shen, Zhen Xiao
Summary: The influence of local damage on the static and dynamic characteristics of honeycomb non-pneumatic tires was studied using the finite element method. The research provides a basis for structural design and optimization, health monitoring, and fault diagnosis of non-pneumatic tires. The results show that spoke damage has different effects on the static and dynamic characteristics of non-pneumatic tires.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2023)
Article
Engineering, Electrical & Electronic
Yaoji Deng, Keyu Lu, Tao Liu, Xufei Wang, Hui Shen, Junjie Gong
Summary: The aerodynamic characteristics of electric vehicles have significant effects on fuel economy and handling stability. The installation of battery packs on the chassis of electric vehicles impacts the flow and pressure fields, resulting in increased drag and lift coefficients. The structural parameters of the battery pack have conflicting effects on these coefficients. These research findings provide guidance for optimizing the aerodynamic characteristics of electric vehicles with battery packs.
WORLD ELECTRIC VEHICLE JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Qiuwei Wang, Youqun Zhao, Yaoji Deng, Han Xu, Huifan Deng, Fen Lin
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2020)
Article
Computer Science, Information Systems
Yaoji Deng, Youqun Zhao, Wei Pi, Yuhao Li, Shilin Feng, Yiyan Du
