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3-Dimensional Simulation of Vehicle Response to Tire Blow-outs
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 23, 1998 by SAE International in United States
Annotation ability available
Sudden tire deflation, or blow-out, is sometimes cited as the cause of a crash. Safety researchers have previously attempted to study the loss of vehicle control resulting from a blow-out with some success using computer simulation. However, the simplified models used in these studies did little to expose the true transient nature of the handling problem created by a blown tire. New developments in vehicle simulation technology have made possible the detailed analysis of transient vehicle behavior during and after a blow-out. This paper presents the results of an experimental blow-out study with a comparison to computer simulations. In the experiments, a vehicle was driven under steady state conditions and a blow-out was induced at the right rear tire. Various driver steering and braking inputs were attempted, and the vehicle response was recorded. These events were then simulated using EDVSM. A comparison between experimental and simulated results is presented. The research was extended by simulating blow-outs at other wheel locations and observing how various driver inputs affect the vehicle's response.
TIRE BLOW-OUT was cited as a factor in more than 300,000 crashes between 1992 and 1996, according to the National Center for Statistics and Analysis *. These crashes resulted in over 2,000 deaths and several times that many serious injuries. Clearly, a thorough understanding of how a tire blow-out affects the potential for loss of vehicle control and subsequent crash is important to motor vehicle safety researchers.
Simulation has been used to study tire blow-outs by previous researchers (e.g.,). The typical approach is based on research  showing a blown tire has a significant loss of cornering stiffness. By simulating a maneuver with both normal and reduced cornering stiffness, the researcher is able to show the difference in behavior for a vehicle with normal tires and the same vehicle performing the same maneuver with a flat tire.
The approach described above provides some insight regarding vehicle handling characteristics while driving on a flat tire. However, the authors felt this approach may be too simplistic: It essentially describes how a vehicle would handle if it left the driveway with a flat tire and was driven down the street. Greater detail and flexibility are required to perform a complete, three-dimensional analysis of the transient effects of blow-out on vehicle behavior during and after a sudden pressure loss while performing normal driving maneuvers. To meet this requirement, the EDVSM vehicle simulator  was extended to allow the user to simulate the transient effects of a tire blow-out at any wheel at any given time during the simulation. This capability has been named the EDVSM Tire Blow-out Model
This paper describes the EDVSM Tire Blow-out Model. The paper includes a validation of the model by direct comparison with experiments conducted at the Transportation Research Center (TRC), in East Liberty, Ohio. The paper also provides a parameter study wherein a predefined maneuver is simulated and the wheel location for the blow-out is varied in order to assess the relative danger for loss of control from blow-out at each wheel location. Finally, EDVSM simulation results for front and rear tire blow-outs are reviewed to describe in detail the blow-out process and how that process affects vehicle handling.
|Anatomy of Accidents Following Tire Disablements
|Simulation Tests of Biaxial Vehicle Motion after a “Tire Blow-Out”
|Hydroplaning Behavior during Steady- State Cornering Maneuvers
CitationBlythe, W., Day, T., and Grimes, W., "3-Dimensional Simulation of Vehicle Response to Tire Blow-outs," SAE Technical Paper 980221, 1998, https://doi.org/10.4271/980221.
Accident Reconstruction: Technology and Animation Vii
Number: SP-1319; Published: 1998-02-13
Number: SP-1319; Published: 1998-02-13
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