Design And Analysis Of Front-End Passive Safety System For Vehicle Collision

Abstract

Road Crashes Are Hard-Nosed Affairs That Can Have A Very Negative Influence On Vehicles And Vehicle Occupants Involved In Them. Numerous Efforts Have Been Made To Improve Safety On Our Roads, Including Vehicle Safety. But These Systems Are Not Effective In Low-Income Countries Because Of That These Systems Require Some Advanced System And Infrastructure In Roads. In This Work A New Front-End, The Passive Safety System Is Designed, Modeled Using Catia V5r20, And Installed On A Geo-Metro Sedan Vehicle Which Is Developed Under Ncac, And By Applying Boundary Conditions And Testing The Effectiveness And Functionality Of The System By Using Ls-Dyna. The Designed Passive Safety Device Has One Free Rotation Wheel Installed Horizontally At The Vehicle Lower Front Left And Right Corners, Respectively. The Wheels Are The First Contact Of The Vehicle In Non-Perpendicular Forward Collisions. The Simulation Of The Vehicle Indicates That The Vehicle With A Device At 45 Degrees And 35km/H Impact To The Pcb-R Diverts The Harmful Energy (About 69 Kj Which Is About 16.82 Percent Of Total Collision Energy) Into Non-Harmful Energy And In Addition, It Increases The Displacement Of The Vehicle About 447 Mm Into Negative Y-Direction. In The Same Way, The Vehicle Tested To The Pickup Track At 20 Degrees Each Other And With A Pole, 90-Degree Off set Indicates That The Harmful Energy Is Diverted To Non-Harmful Energy And The Vehicle Displacement Increased For The Vehicle With A Device. But At Large Collision Angles The Vehicle Swing Slide Along The Surface Of The Guardrail. When The Vehicle Is Tested At A Higher Speed (120km/H) The Mounting Plate Fails And No More Protection For The Occupant And The Vehicle Parts. For Occupant Response, The Resultant Rotational Acceleration Measured At The C.G Accelerometer Indicates For The Vehicle Equipped With A Device Was Lower Than The Vehicle Without A Device. Generally, We Can Conclude That The Vehicle With A Device Diverted To The Safest Place And The Probability Of Occurrence Of Rear End Collision Decreased, And The Harm To The Parts And Occupant Decreased.