Investigation of dynamic effects induced by wheel-rail contact in the crossing component of high-speed turnouts

The growing demand for railway transportation requires higher speeds and axle loads, but this can negatively impact critical track components like railway crossings. This study investigates the dynamic behavior of high-speed turnout components under varying train speeds and axle loads, focusing on vertical displacements and contact forces. Using detailed finite element analysis, comparative results reveal trends in rail displacements, with higher speeds reducing the responsiveness of the crossing tip (frog) to rapid changes. The study also highlights the role of static axle loads in maintaining wheel-rail contact and identifies vulnerable components, such as the frog tip and base plate, under higher static loads. These findings provide valuable insights into the dynamics of turnout components, enabling stakeholders to derive strategies for improving turnout performance and safety.