Intermediate Maneuver Induced Rollover Simulation (IMIRS) and Sensitivity Analysis

摘要

The report describes the development of the Intermediate Maneuver Induced Rollover Simulation (IMIRS) which can be used to investigate the phenomenon of maneuver induced rollover of light vehicles. The IMIRS represents an enhancement of the existing Lateral Weight Transfer Simulation (LWTS) and is capable of investigating cornering, cornering and braking, and cornering and accelerating limit maneuvers as well as vehicle skidding or spinning conditions. A rollover model added to the IMIRS simulation enables users to investigate the influence of vehicle design and environmental parameters on rollover stability. The validation of the IMIRS simulation is provided in the report and is based on a comparison with vehicle experimental tests. The Fortran version of the IMIRS model is used to perform a time domain sensitivity analysis in four different vehicle maneuvers which include J-Turn without rollover, J-Turn with rollover, S-Turn without rollover and S-Turn with rollover. A complete description of the sensitivity results of vehicle's Rollover Prevention Energy Reserve (RPER) is presented in the report. The report also contains a user's manual with complete instructions for installation and use of the IMIRS simulation.