VEHICLE DYNAMICS IN SINGLE-VEHICLE ACCIDENTS. VALIDATION AND EXTENSIONS OF A COMPUTER SIMULATION. INTERIM TECHNICAL REPORT

A COMPUTER SIMULATION OF THE DYNAMICS OF SINGLE VEHICLE ACCIDENTS, THAT WAS DEVELOPED WITHIN A PREVIOUSLY REPORTED PHASE OF THIS RESEARCH PROGRAM (CAL REPORT NO. VJ-2251-V-1, JULY, 1967) IS VALIDATED BY MEANS OF COMPARISON OF ITS PREDICTIONS OF VEHICLE RESPONSES WITH MEASURED RESULTS FROM A SERIES OF FULL-SCALE EXPERIMENTS. EXCELLENT CORRELATION IS ACHIEVED FOR A VARIETY OF VIOLENT MANEUVERS, MOST OF WHICH INCLUDE SIMULTANEOUS RIDE AND CORNERING RESPONSES. THE TEST PROCEDURES AND INSTRUMENTATION OF THE FULL-SCALE EXPERIMENTS ARE DESCRIBED IN DETAIL. PROPERTIES AND DIMENSIONS OF THE TEST VEHICLE, AS MEASURED BY THE FORD MOTOR COMPANY UNDER A SUBCONTRACT, AND TIRE PROPERTIES, AS MEASURED AND MADE AVAILABLE BY THE GENERAL MOTORS ENGINEERING STAFF, ARE SUMMARIZED. AN AUXILIARY COMPUTER-GRAPHICS PROGRAM THAT PRODUCES PERSPECTIVE DISPLAYS OF THE SIMULATED VEHICLE AND TERRAIN FEATURES, OR OBSTACLES, IS BRIEFLY DESCRIBED, AND SAMPLE DISPLAYS ARE PRESENTED. THE RESULTS OF FEASIBILITY STUDIES OF CLOSED-LOOP CONTROL OF THE SIMULATED VEHICLE EXTENSION OF THE GENERALITY OF SPRUNG MASS IMPACT CAPABILITIES, AND APPLICATION OF THE SIMULATION TO THE TASK OF ACCIDENT RECONSTRUCTION ARE DISCUSSED. A SPECIALIZED VERSION OF THE VEHICLE SIMULATION, THAT IS BEING DEVELOPED FOR USE IN STUDIES OF THE DETAILED DYNAMICS OF BRAKING IS DESCRIBED. SINCE REFINEMENTS AND MINOR CORRECTIONS HAVE BEEN INCORPORATED IN THE COMPUTER SIMULATION DURING THE COURSE OF THE VALIDATION STUDY, THE PRESENT REPORT INCLUDES UPDATED VERSIONS OF THE MATHEMATICAL MODEL DESCRIPTION AND OF THE EQUATIONS AND LOGIC THAT APPEARED IN THE EARLIER REPORT.

• Supplemental Notes:
  • Rept No Vj-2251-V-3, 292 PP, 50 FIG, 7 TAB
• Corporate Authors:

  Cornell Aeronautical Laboratory, Incorporated

  4455 Genesee Street
  Buffalo, NY  United States  14221
• Authors:
  • Michenry, R R
  • DeLeys, N J
• Publication Date: 1968-12

Subject/Index Terms

• TRT Terms: Braking; Graphics; Information processing; Mathematical models; Simulation; Single vehicle crashes; Vehicle dynamics
• Uncontrolled Terms: Graphical analysis
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225556
• Record Type: Publication
• Source Agency: Nat Safety Council Safety Res Info Serv
• Files: TRIS
• Created Date: Jan 19 1970 12:00AM