APPROXIMATE CALCULATIONS ON THE LARGE PLASTIC DEFORMATION OF HELICAL SPRINGS AND THEIR POSSIBLE APPLICATION IN A VEHICLE ARRESTING SYSTEM

The quasi-static large, plastic deformation of a helical extension spring is analysed to determine its load-deflection characteristic and energy-absorbing capacity. These results along with elastic effects and other related factors are then discussed in relation to a vehicle arresting system. Formulae and diagrams for facilitating the design of such systems are given. Some experimental test results for the large plastic extension of some initially close coiled helical springs are presented and compared with the theoretical results.

• Corporate Authors:

  Mechanical Engineering Publications Limited

  P.O. Box 24, Northgate Avenue
  Bury St Edmunds, Suffolk IP32 6BW,   England 
• Authors:
  • Johnson, W
  • Yu, T X
• Publication Date: 1981

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 111-121
• Serial:
  • Journal of Strain Analysis for Engineering Design
  • Volume: 16
  • Issue Number: 2
  • Publisher: Mechanical Engineering Publications Limited

Subject/Index Terms

• TRT Terms: Deflection; Dissipation; Energy absorption; Kinetic energy; Loads; Motor vehicles; Plastic deformation; Speed; Traffic speed; Vehicle springs
• Old TRIS Terms: Load deflection; Vehicle arresting systems
• Subject Areas: Design; Energy; Highways; Safety and Human Factors; I85: Safety Devices used in Transport Infrastructure;

Filing Info

• Accession Number: 00395327
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: HS-037 911
• Files: HSL, TRIS, USDOT
• Created Date: Jun 30 1985 12:00AM