Estimation method of lateral vibration acceleration of car body used for safety evaluation of railway vehicles against crosswind

The critical wind speed of overturning is one indices for the safety evaluations railway vehicles against crosswind. defined as when wheel loads on upwind side becomes zero, and often evaluated by “RTRI’s detailed equation”. In RTRI’s equation, lateral vibration inertia force car bodies considered acting forces affecting overturning. can be obtained from product acceleration mass, assumed past running test results. However, there are differences in position, direction situation between measured tests calculation model equation. this paper, experiments a tunnel were conducted to clarify effects with respect acceleration. Next, vehicle dynamics simulation was implemented calculate that occurs at center gravity body under strong crosswinds. results showed calculated accurately using addition, new method proposed estimate track displacement data. Finally, assuming typical commuter vehicles, up 2m/s higher than equation