Strength Improvements to Automotive Roof Components

Herbst, Brian; Forrest, Stephen; Meyer, Steven E.

doi:10.4271/980209

Cited by 11 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Ford Falcon employs rigid composite fillers in its roof structure to increase roof strength performance. Several scientific articles detail the ability of rigid void fillers, such as polyurethane and epoxy-based foams, to increase peak force and energy absorption of automotive components [6,7,[9][10][11]. The National Highway Traffic Safety Administration used high-strength steel and syntactic foam to reinforce a pickup truck roof subjected to dolly rollover testing in 1993 [12].…”

Section: Void Filling Cross-sectionsmentioning

confidence: 99%

“…The methodology of inserting tubular steel reinforcements inside the existing automotive roofs has been patented, published and is currently implemented in production vehicles [6,7]. Mazda holds the patent, which specifically designates the insertion of a steel tube within the existing pillar, to create a structure with increased strength and rigidity without an increase in the pillar's dimensions [8].…”

Section: Internal Steel Reinforcementsmentioning

confidence: 99%

See 1 more Smart Citation

Reinforcement of vehicle roof structure system against rollover occupant injuries

Mao¹,

Chirwa²,

Chen³

2007

International Journal of Crashworthiness

View full text Add to dashboard Cite

With the increasing popularity of light trucks, sport utility vehicles and minivans in recent years, occupants' protection under rollover accidents require some urgent reassessment so as to further reduce the risk of severe and fatal injuries. European studies under the rollover project have shown that there is a relationship between head/neck injuries and the roof intrusion including its impulse. Typical roof damage accidents in Europe were investigated. Latest modification methodologies for the reinforcements to roof structures believed to significantly increase the crush resistance of the roof are suggested and discussed. The work also gives a comprehensive numerical analysis using LS-DYNA3D and experimental testing results of roofs under the crushing regulation FMVSS 216 as well as inverted drop tests. Simple design changes to the vehicle roof structure can produce a significant improvement in roof strength and energy absorption capability, although these changes will be accomplished with a weight penalty of 1.0% to 2.3% of test vehicle weight.

show abstract

Section: Void Filling Cross-sectionsmentioning

confidence: 99%

Section: Internal Steel Reinforcementsmentioning

confidence: 99%

Reinforcement of vehicle roof structure system against rollover occupant injuries

Mao¹,

Chirwa²,

Chen³

2007

International Journal of Crashworthiness

View full text Add to dashboard Cite

show abstract

“…This means that only a small fraction of the vehicle's mass is purposedesigned to protect the very essence of its occupants -the cranium, neck and spine -which resides above the windowsill level. A review of available technical fixes was given by Herbst, et al 15 , all lowtech improvements that can be made at reasonable wholesale cost:…”

Section: Design Elements Of Rollover Crashworthy Roofsmentioning

confidence: 99%

Forensic Engineering Investigation Of Roof Failure In Rollovers

Batzer¹

2010

JotNAFE

View full text Add to dashboard Cite

During Automotive Rollover, The Preservation Of The Occupant Survival Space Is A Critical Aspect Of Crashworthiness. This Paper Examines The Forensic Aspects Of Roof Performance To Include Forensic Indicators, Failure Mechanisms, Occupant Injury, And Legal Aspects. The Level Of Expected Impact Force And Current State Of Technology Are Reviewed. The Easonable Alternative Designis Discussed Along With Case Studies.

show abstract

Evaluation of Heavy Truck Rollover Crashworthiness

Evans¹,

Batzer²,

Andrews³

et al. 2005

Transportation

View full text Add to dashboard Cite

Heavy trucks (those having a gross vehicle weight rating of greater than 10,000 pounds) are an essential part of the United States economy and account for 4% of all registered vehicles. The large size and weight of these vehicles can pose a serious safety threat to the vehicle’s occupants in the event of a rollover collision. The rollover crashworthiness of heavy trucks, in particular the structural integrity of the cab, is analyzed in this paper. An actual rollover accident was analyzed and the cab design of an exemplar vehicle was evaluated. Modifications were made to the exemplar and an inverted drop test onto the roof of the cab was conducted. Recommendations for improving the rollover crashworthiness of heavy trucks are provided. An analysis of heavy truck rollover accidents was also conducted for data available from 1994-2002 by submitting queries to the Fatality Analysis Reporting System (FARS), which is administered by the National Highway Safety Administration (NHTSA), in order to determine the number of incapacitating and fatal injuries that occurred when the occupants were contained in the cab during a rollover accident. The percentage of incapacitating and fatal injuries for restrained occupants was determined by analyzing the rollover data obtained from the FARS rollover query that was used and was found to be 35%. Therefore, restrained occupants in heavy trucks can sustain significant injuries during rollover accidents, in part, due to insufficient rollover crashworthiness.

show abstract

Strength Improvements to Automotive Roof Components

Cited by 11 publications

References 1 publication

Reinforcement of vehicle roof structure system against rollover occupant injuries

Reinforcement of vehicle roof structure system against rollover occupant injuries

Forensic Engineering Investigation Of Roof Failure In Rollovers

Evaluation of Heavy Truck Rollover Crashworthiness

Contact Info

Product

Resources

About