FRICTION WEDGE DESIGN OPTIMIZED FOR HIGH WARP FRICTION MOMENT AND LOW DAMPING FORCE

摘要

A damping system for a rail car truck utilizes friction wedges supported on side springs to damp relative movement between the rail car truck bolster and the side frames supporting it. Each friction wedge has a generally triangular shape with an angle .theta. define d between a vertical friction surface which bears against a side frame and a sloping friction surface whic h moves relative to the bolster. The angle .lambda. and the force P of each side spring are defined by (see formulas I and II)