Abstract
Contact responses due to 3D wheel-rail interaction and rail deflection were investigated. The comparison of rail deflection and contact pressure were discussed regarding on contact area/shape and different loading method. Three different simulation models were examined; (1) strong format of dynamic equilibrium equations using Eulerian beam and Timoshenko beam theories, (2) moving load simulation with 3D rail-sleeper-soil model by assuming the contact area upon train axle load and similarly, and (3) moving mass simulation model by surface-to-surface contact of rigid wheel and elastic rail under angular velocity control for forward rolling. The contact geometry shaped with 20~27 mm width and 93 mm long with ellipsoidal area and its value ranged from 1,850~2,500 mm 2 . This shows the similar behavior pattern of Song et al. (2014) and reaches maximum 490 MPa of unsymmetric contact pressure.
| Translated title of the contribution | Dynamic Analysis of Railway Structures using Multibody Contacts |
|---|---|
| Original language | Korean |
| Pages (from-to) | 293-299 |
| Number of pages | 7 |
| Journal | 방재학회논문집 |
| Volume | 15 |
| Issue number | 6 |
| DOIs | |
| State | Published - Dec 2015 |