STABILITY OF RAPID TRANSIT TRAIN AGAINST OVERTURNING IN A CROSSWIND

THE STABILITY OF A LIGHT-WEIGHT TRAIN AGAINST OVERTURNING IN A CROSSWIND HAS RECEIVED ONLY SCANT ATTENTION IN THE PAST. THIS STUDY COMPRISES A WIND TUNNEL INVESTIGATION AND AN ANALYSIS OF THE MAJOR STATIC AND DYNAMIC FORCES THAT MIGHT COMBINE TO OVERTURN A TRAIN EITHER WHEN RUNNING OR WHEN STANDING STILL. BECAUSE THE FINAL SHAPE OF THE TRAIN, THE DETAILS OF ITS OUTSIDE SURFACE, AND THE SUSPENSION CHARACTERISTICS OF THE TRUCKS HAVE NOT BEEN SELECTED, RESULTS ARE SHOWN IN PARAMETRIC FORM AND INDICATE THE TRENDS TO BE EXPECTED IF WIND VELOCITY, CAR WEIGHT, RAIL GUAGE, SPEED AROUND A CURVE, AND SEVERAL OTHER FACTORS ARE VARIED. SINCE STABILITY IS MOST NEARLY RELATED TO THE PRODUCT OF CAR WEIGHT AND RAIL GAUGE, IT IS ESSENTIAL TO USE A WIDER GAUGE WHEN TRAINS ARE MADE LIGHTER IF STABILITY IS TO BE MAINTAINED. THE AUTHOR RECOMMENDS THAT SUCH CALCULATIONS BE REVIEWED WHEN THE DESIGN HAS BEEN SELECTED AND THAT, IN PARTICULAR, ROCKING AND HUNTING MOTIONS BE STUDIED IN MORE DETAIL WHEN THE CONDITIONS OF RAILS AND TRUCKS ARE KNOWN IN MORE DETAIL. /UMTA/

  • Supplemental Notes:
    • PROJ NO CAL-MTD-2
  • Corporate Authors:

    Stanford Research Institute

    333 Ravenswood Avenue
    Menlo Park, CA  United States  94025
  • Authors:
    • Chilton, E G
    • Witherly, T D
  • Publication Date: 1964-1

Subject/Index Terms

Filing Info

  • Accession Number: 00241759
  • Record Type: Publication
  • Source Agency: Urban Mass Transportation Administration
  • Files: TRIS, USDOT
  • Created Date: Oct 9 1972 12:00AM