Effect of Polyurethane Foam on the Energy Management of Structural Components

Alwan, Jamil M.; Wu, Chi-Chin; Chou, Clifford C.

doi:10.4271/2000-01-0052

Cited by 10 publications

(3 citation statements)

References 8 publications

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“…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]. Several Ford Motor Company articles discuss the structural enhancement characteristics of polyurethane and epoxy-based structural foams as it can be applied to automotive vehicle construction [13][14][15]. Foam filling has been proven to enhance automotive structures by increasing load capacity and energy absorption, re- ducing section collapse and minimising the effects of stress risers [16].…”

Section: Void Filling Cross-sectionsmentioning

confidence: 99%

Reinforcement of vehicle roof structure system against rollover occupant injuries

Mao¹,

Chirwa²,

Chen³

2007

International Journal of Crashworthiness

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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.

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Section: Void Filling Cross-sectionsmentioning

confidence: 99%

Reinforcement of vehicle roof structure system against rollover occupant injuries

Mao¹,

Chirwa²,

Chen³

2007

International Journal of Crashworthiness

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“…Alternatively, there are other local reinforcing methods, such as internal steel reinforcements, void-filling cross-sections and so on. The effect of void-filling on the bending crush resistance of the thin-walled steel beam has ISSN been studied by many researchers [1,3,4,5,6,15,16,23,24]. Grzebieta et al [5,6,24] investigated the effect of B/t (beam width to wall thickness) ratio of hollow and epoxy foamfilled steel square-section beams, and found that there is little advantage in using any void filling compound if the B/t ratio is low.…”

Section: Introductionmentioning

confidence: 99%

“…Chen [3,4] conducted the deep bending collapse of thin-walled empty and aluminium foam-filled steel beams. The effect of polyurethane foam on energy management of structural components was studied as well [1,15,16].…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness of composite inserts in vehicle structure

Park

Kan

Reagan

et al. 2012

International Journal of Crashworthiness

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Composite inserts are a well-known and innovative technology in the automotive industry used to improve safety, NVH (noise, vibration, and harshness) and fatigue life of vehicles, as well as to reduce vehicle weight and manufacturing cost. In order to study the crashworthiness performance of composite inserts in a vehicle structure, a three-point bending test of simplified steel-composite combined beam structures is considered. The beam structure in this investigation has a double-hat section. Epoxy-based structural foam and 33% short glass fibre reinforced nylon insert are considered as composite fillers for the two empty beam sections. Four cases, based on the different combination of composite materials inserted in the beam sections, are considered. The test results show that the composite insert greatly contributes to improvement of the energy absorption of beam structure. The force-displacement (F-D) curves of bending tests, the deformation behaviours of beam structures and the failure modes of composite inserts are shown and analysed to understand the effects of composite inserts to the crashworthiness of the beam structure in a bending condition. The numerical study was performed to develop a practical finite element (FE) model of the steel-composite combined structure.

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A non-quadratic yield function for polymeric foams

Wang

Pan

2006

International Journal of Plasticity

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Effect of Polyurethane Foam on the Energy Management of Structural Components

Cited by 10 publications

References 8 publications

Reinforcement of vehicle roof structure system against rollover occupant injuries

Reinforcement of vehicle roof structure system against rollover occupant injuries

Crashworthiness of composite inserts in vehicle structure

A non-quadratic yield function for polymeric foams

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