NUMERICAL MODELLING AND SIMULATION OF VEHICULAR IMPACTS ON TIRE-MOUNTED CABLE BARRIERS

This research focused on evaluating retrofit designs for cable barriers using reclaimed tires so as to reduce the chance of vehicle under-riding for small passenger cars. Finite element (FE) analysis was used to conduct simulations of full-scale vehicular crashes into these retrofit cable barriers a...

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Bibliographic Details
Published inWIT Transactions on Engineering Sciences Vol. 124; p. 207
Main Authors Howie, Fang, AMEY BADAR
Format Journal Article
LanguageEnglish
Published Southampton W I T Press 01.01.2019
Subjects
Automotive parts
Computer simulation
Crashes
Cushions
Finite element method
Hardware
Impact velocity
Metal sheets
Modulus of elasticity
Neon
Passengers
Radiators
Rubber
Safety
Shock absorbers
Test vehicles
Tires
Vehicle impacts
Viscous damping
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Summary:This research focused on evaluating retrofit designs for cable barriers using reclaimed tires so as to reduce the chance of vehicle under-riding for small passenger cars. Finite element (FE) analysis was used to conduct simulations of full-scale vehicular crashes into these retrofit cable barriers and the barriers’ performance was evaluated. Four designs of the tire-mounted cable barriers were modelled and evaluated under impacts by a 1996 Dodge Neon, which was in compliance with the 1100C test vehicle specified by the Manual for Assessing Safety Hardware (MASH). Ten different material models were used in the FE models, including the piecewise linear plasticity model for steel components, elastic model for the tires and a few other components, viscous damping model for the shock absorbers, low-density foam model for the radiator core, spot-weld model for sheet metal connections, Blatz-Ko rubber model for rubber cushions, rigid model for most mounting hardware, and null material model defined for contact purposes. The simulations of vehicular crashes were conducted on both a flat terrain and a sloped median. The impact conditions were based on the MASH Test Level 3 (TL-3) requirements, i.e., at an impact speed of 100 km/h (62.1 mph) and a 25° impact angle. The simulation results showed that the tire-mounted cable barrier could improve the safety performance of the current cable barrier system (i.e., without tires) under impacts of small passenger cars.
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ISSN:1746-4471
1743-3533
DOI:10.2495/MC190201