Shape Recovery Simulation of Flexible Airdam Chrysler India Automotive Pvt Limited

Format:

Conference/Event

Author/Creator:

K. K., author.

Contributor:

Qu, Xiaoyan (Susan)

Quinlan, Neill

Conference Name:

SAE 2013 World Congress & Exhibition (2013-04-16 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

Airdam is an aerodynamic component in automobile and is designedto reduce the drag and increase fuel efficiency. It is also animportant styling component. The front airdam below the bumper isto direct the air flow away from the front tires and towards theunderbody, where the drag coefficient becomes less.The flexible airdam is made of Santoprene - thermoplasticvulcanizates (TPV), which belongs to thermoplastic elastomer (TPE)family. When a vehicle is parked over a parking block, the flexibleairdam will be under strain subjected to bending load from theparking block. If the airdam is kept under constant strain for acertain period, a set will occur and the force will decay over aperiod of time. Due to the force decay, the stress will reduce andthis behavior is called as stress relaxation. Once the airdam isremoved from the block, it will be in its deformed position and tryto recover its original shape which will affect the fuel efficiencyand appearance of the vehicle, until it recovers the originalshape. This paper explains the material behavior (hyperelastic andviscoelastic) of TPV and its representative material model inAbaqus. This is followed by a simple feasibility study done on arectangular specimen to verify the force decay over a period oftime for TPV followed by comparison of CAE simulation to physicaltest results. Finally explains about the flexible airdam parkingsimulation methods and the shape recovery of airdam over a periodof time. The prediction of CAE to the lab testing performed onactual airdam results is provided

Notes:

Vendor supplied data

Publisher Number:

2013-01-0166

Access Restriction:

Restricted for use by site license