THE OVERSHOOT OF AERODYNAMIC FORCES ON A RAILCAR- LIKE BODY UNDER STEP-FUNCTION-LIKE GUSTY WINDS

In Japan, railcar vehicles are often overturned by wind gusts, such as from tornadoes, and unsteady aerodynamic forces due to gusts rising in very short times have received a lot of at-tention. For wind resistant designs, the wind load is based on a quasi-static aerodynamic force. Generally, the coefficient of wind force, C, is supplied by empirical data from wind tunne