Article
Engineering, Mechanical
Yu Chen, Binbin Liu, Boyang An, Ping Wang, Stefano Bruni
Summary: This paper proposes a new simplified method to solve conformal rolling contact problems, achieving a balance between accuracy and computational efficiency. Numerical experiments and comparative analysis show that this method is consistent with traditional methods in determining contact stresses, total forces, and wear prediction, and demonstrates potential for application in vehicle dynamics simulation and damage analysis.
VEHICLE SYSTEM DYNAMICS
(2023)
Article
Engineering, Mechanical
Maksym Spiryagin, Sundar Shrestha, Ingemar Persson, Qing Wu, Esteban Bernal Arango, Colin Cole
Summary: This paper presents an adaptive simulation and integration method (ASIM) positioned between traditional methods, aiming to transition from non-Hertzian to Hertzian contact in the normal problem and calculate contact forces at the wheel-rail interface using Modified Fastsim. The proposed method is evaluated and discussed by benchmarking it with the standard Extended Contact-based wheel-rail coupling.
VEHICLE SYSTEM DYNAMICS
(2022)
Article
Materials Science, Multidisciplinary
Yongchao Chen, Zhizi Guan, Wei Yang, Yongtao Yao, Hailong Wang
Summary: The study shows that the influence of adhesion between the substrate and indenter can be reduced by adjusting the adhesion strength and range, or enhancing the substrate stiffness. The elastic response of the substrate becomes weaker after coating graphene layers on both sides of the interface.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
Article
Mechanics
Xingwei Yang, Luxia Yu, Rong Long
Summary: Pressurization of thin elastomeric membranes is a key actuation mechanism in soft robotics, allowing reversible deformation upon inflation and deflation. The study focused on contact mechanics of inflated membranes with various substrates, providing analytical solutions for deformation profiles and relationships between applied force, displacement, and contact radius. This research offers insight into designing soft pneumatic actuators with desired contact compliance.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2021)
Article
Engineering, Multidisciplinary
Q. G. Liu, C. M. Fan, B. Sarler
Summary: The paper introduces a Localized Method of Fundamental Solutions (LMFS) for solving two-dimensional anisotropic elasticity problems by dividing the computational domain into overlapping subdomains and combining the classical Method of Fundamental Solutions (MFS) to achieve expression and calculation of the solution.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2021)
Article
Engineering, Chemical
Mohammad R. Vazirisereshk, Saima A. Sumaiya, Rimei Chen, Mehmet Z. Baykara, Ashlie Martini
Summary: The study using C-AFM and MD simulations found that the electrical contact resistance at the nanoscale decreases over time due to the increase in real contact area caused by atoms diffusing into the contact. This diffusion-based aging is a thermally activated process dependent on the local contact pressure.
Article
Engineering, Multidisciplinary
Aly R. El-metwaly, M. A. Kamal, Youssef F. Rashed, Hany Nasry Zaky, Ahmed S. Ismail
Summary: This paper develops a meshless method of fundamental solutions to solve couple stress problems, even in the presence of body forces. It derives suitable new particular solutions that maintain the meshless nature of the technique. The paper discusses in detail the derivation of the new particular solutions for generalizing displacements and tractions. Several examples, including stress concentration and problems with body forces, are tested to demonstrate the efficiency and strength of the derived formulation.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Engineering, Multidisciplinary
M. R. Hematiyan, M. Mohammadi, Chia-Cheng Tsai
Summary: The method of fundamental solutions (MFS) is applied for solving two-dimensional anisotropic thermoelastic problems, providing accurate solutions through decomposition into homogeneous and particular solutions. Numerical examples verify the method's accuracy, while investigating the impact of parameters such as the number and location of source points on results.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Engineering, Mechanical
Binbin Liu, Stefano Bruni
Summary: This paper compares the influence of different contact models on MBS simulations of rail vehicle system dynamics, and finds that non-Hertzian models deviate from the classical Hertzian solutions in both local contact and global dynamics. The KBTNH model provides better agreement with CONTACT than the FASTSIM algorithm for non-elliptic contact conditions.
VEHICLE SYSTEM DYNAMICS
(2022)
Article
Mathematics, Applied
Weiwei Li
Summary: In this paper, a localized version of the method of fundamental solutions (MFS) named as the localized MFS (LMFS) is applied to 2D harmonic elastic wave problems. By dividing the domain into small subdomains, LMFS can effectively solve large-scale problems in a sparse and banded system of linear equations.
APPLIED MATHEMATICS LETTERS
(2021)
Article
Engineering, Mechanical
Juan Giner-Navarro, Jorge Gomez-Bosch, Asier Alonso, Luis Baeza
Summary: The CONTACT method developed by Prof. Kalker is widely used in wheel-rail contact mechanics due to its precision and lower computational cost compared to other numerical methods. However, its computational cost is still too high for dynamic simulations. This study proposes a new fast and accurate contact method using Kalker's algorithm, which reduces the dimension of the problem and achieves accurate results with significant reduction in computation cost.
Article
Engineering, Mechanical
Selim E. Tokta, Serkan Dag
Summary: This article presents analytical solution procedures for moving Hertzian contact problems involving multi-layer and functionally graded coatings. The developed procedures are verified through comparisons to the findings available in the literature. Numerical results illustrate the influences of factors on the contact stresses and the required contact force.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Enrico Ciulli, Paola Forte, Flavio Antonelli, Roberto Minelli, Daniele Panara
Summary: This paper describes a test rig and methodology for determining the stiffness of a TPJB ball-and-socket pivot. The preliminary results show significant differences between experimental and analytical results for the conformal contact of the ball-and-socket.
Article
Engineering, Mechanical
Muhammad Usman, Zhifeng Zhou, Abdul Wasy Zia, Kwok Yan Li
Summary: The purpose of the study is to test high contact stress on thin coatings on a silicon wafer and obtain friction and wear data. The coating with a voltage of -120V has the highest hardness, modulus, and residual stress, as well as the lowest coefficient of friction and wear rate.
Article
Mathematics, Applied
Jiri Jarusek
Summary: This paper proves the existence of solutions to quasistatic frictional contact problems with limited interpenetration. If the depth of the interpenetration approaches zero, there are some sequence of solutions and a solution of the corresponding Signorini contact problem that serves as the limit of the sequence.
NONLINEAR ANALYSIS-REAL WORLD APPLICATIONS
(2022)
Article
Construction & Building Technology
Hongjian Du, Sze Dai Pang
CEMENT AND CONCRETE RESEARCH
(2015)
Article
Engineering, Multidisciplinary
Kunpeng Lin, Sze Dai Pang
COMPOSITES PART B-ENGINEERING
(2015)
Article
Engineering, Civil
Jia-Liang Le, Marie DesHarnais, Bing Xue, Sze Dai Pang, Hongjian Du
ENGINEERING STRUCTURES
(2015)
Article
Engineering, Mechanical
Choon Wei Roy Ong, Min-Hong Zhang, Hongjian Du, Sze Dai Pang
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2015)
Article
Construction & Building Technology
Hongjian Du, Hongchen Jacey Gao, Sze Dai Pang
CEMENT AND CONCRETE RESEARCH
(2016)
Article
Mechanics
Yie Sue Chua, Elliot Law, Sze Dai Pang, Ser Tong Quek
COMPOSITE STRUCTURES
(2016)
Article
Engineering, Ocean
Fwu Chyi Teo, Leong Hien Poh, Sze Dai Pang
JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING-TRANSACTIONS OF THE ASME
(2017)
Article
Construction & Building Technology
Anjaneya Dixit, Sze Dai Pang, Sung-Hoon Kang, Juhyuk Moon
CEMENT & CONCRETE COMPOSITES
(2019)
Article
Construction & Building Technology
Hongjian Du, Sze Dai Pang
CONSTRUCTION AND BUILDING MATERIALS
(2019)
Article
Engineering, Mechanical
Choon Wei Roy Ong, Min-Hong Zhang, Hongjian Du, Sze Dai Pang
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2019)
Article
Construction & Building Technology
Anjaneya Dixit, Hongjian Du, Juntao Dang, Sze Dai Pang
Summary: Adding fly ash (FA) to limestone-calcined clay (LC) blends improves the rheology of the concrete, with the LCF concrete demonstrating better performance in both early-age and later-age characteristics.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
Jialiang Wang, Sufen Dong, Sze Dai Pang, Chunsheng Zhou, Baoguo Han
Summary: This study demonstrates that the surface-modified CNTs can reduce the pore content and size of RPC composites, thereby modifying their pore structure characteristics. Different types of CNTs have varying effects on the pore structure, with hydroxyl functionalized and nickel-coated CNTs causing the shrinkage of gel structure, while carboxyl functionalized CNTs inducing the transformation of nano-scale pores inside the gel. The effects of surface-modified CNTs on the pore structure of RPC composites are primarily on the nano- and micrometer scale.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Anjaneya Dixit, Guoqing Geng, Hongjian Du, Sze Dai Pang
Summary: This study investigates the influence of carbon curing on different blended cements. The results indicate that carbon curing at the hardened state can store more carbon than at the fresh state, and it also improves the microstructure densification in hardened state cured samples and early-age strength in fresh state cured samples.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Nanoscience & Nanotechnology
Kunpeng Lin, Elliot Law, Sze Dai Pang
JOURNAL OF NANOMECHANICS AND MICROMECHANICS
(2015)
Proceedings Paper
Education, Scientific Disciplines
Elliot Law, Sze Dai Pang
2014 4th Interdisciplinary Engineering Design Education Conference (IEDEC)
(2014)
