Automotive Side Glazing Ejection Mechanisms: Part II — Review of Recent Glazing Literature

Abstract

In Part I of this two part series, the mechanisms of occupant ejection through automotive side glazing during rollover collisions were analyzed. It was shown that partial or complete ejection can occur through centrifugal acceleration based motion through an open portal, or due to the changes in velocity (ΔVs) developed during corner impacts. A new rollover angular velocity model was also developed and validated. In this second paper, recent literature discussing occupant retention side glazing is discussed, and the new angular rate model is applied. New dolly rollover testing of two XC90s is also presented and compared to previous testing.

Forensic Engineering Investigation Of Side Glazing Failure In Rollover Collisions

“…Note that the roll rate in this demonstration exceeded 600 degrees per second, and is not representative of the vast majority of real-world rollovers. This vehicle was rolled at 43 mph, rather than the FMVSS-208 standard 30 mph, amongst other protocol differences 24 .…”