An Efficient Constraint Contact Approach for the Calculation of Wheel-Rail Interaction with Worn Profiles

EasyChair Preprint 13483

Abstract

The constraint approach is developed to describe the contact between wheel and rail using a set of kinematic constraint equations, ensuring that both surfaces are in contact without penetration or separation. Offline contact detection is carried out and the resulting data is stored in a pre-processing stage. In the dynamic simulation, the contact location can be determined by interpolating the stored data, which greatly reduces the computation load. Over the years, several works have been published to develop the constraint approach for the calculation of wheel-rail interactions. However, this approach is not well popularized because only new wheel-rail profiles are applied, making it difficult to represent the real-life wheel-rail condition. The goal of this paper is to enhance the developed constraint approach, knife-edge contact (KEC) approach, for the estimation of the wheel-rail contact with worn profiles.

Keyphrases: Worn profiles, computational efficiency, wheel/rail contact

@booklet{EasyChair:13483,
  author    = {Xinxin Yu and Jose Escalona and Zili Li},
  title     = {An Efficient Constraint Contact Approach for the Calculation of Wheel-Rail Interaction with Worn Profiles},
  howpublished = {EasyChair Preprint 13483},
  year      = {EasyChair, 2024}}