title: A new solution method for wheel/rail rolling contact.
abstract: To solve the problem of wheel/rail rolling contact of nonlinear steady-state curving, a three-dimensional transient finite element (FE) model is developed by the explicit software ANSYS/LS-DYNA. To improve the solving speed and efficiency, an explicit-explicit order solution method is put forward based on analysis of the features of implicit and explicit algorithm. The solution method was first applied to calculate the pre-loading of wheel/rail rolling contact with explicit algorithm, and then the results became the initial conditions in solving the dynamic process of wheel/rail rolling contact with explicit algorithm as well. Simultaneously, the common implicit-explicit order solution method is used to solve the FE model. Results show that the explicit-explicit order solution method has faster operation speed and higher efficiency than the implicit-explicit order solution method while the solution accuracy is almost the same. Hence, the explicit-explicit order solution method is more suitable for the wheel/rail rolling contact model with large scale and high nonlinearity.
authors.affiliation: School of Mechanical Engineering and Automation, University of Science and Technology, Anshan, 114051 Liaoning China.
authors.forename: Jian
authors.initials: J
authors.lastname: Yang
authors.affiliation: School of Mechanical Engineering and Automation, University of Science and Technology, Anshan, 114051 Liaoning China.
authors.forename: Hua
authors.initials: H
authors.lastname: Song
authors.affiliation: School of Mechanical Engineering and Automation, University of Science and Technology, Anshan, 114051 Liaoning China.
authors.forename: Lihua
authors.initials: L
authors.lastname: Fu
authors.affiliation: School of Mechanical Engineering and Automation, University of Science and Technology, Anshan, 114051 Liaoning China.
authors.forename: Meng
authors.initials: M
authors.lastname: Wang
authors.affiliation: Railway Engineering Research Institute, China Academy of Railway Sciences, Beijing, 100081 China.
authors.forename: Wei
authors.initials: W
authors.lastname: Li
keywords: Explicit–explicit; Finite element model; Implicit–explicit; Pre-loading; Wheel/rail rolling contact