VEHICLE CRASH BOX ANALYSIS OF DIFFERENT SHAPES SUBJECTED TO IMPACT LOADING FOR MINIMUM DEFLECTION USING ANSYS

In world today every vehicle manufacturer is in the race of providing more and more safety to the passengers that leads to the development of heavy and costly equipment and material. One of them is providing Crash box to the vehicle which is generally located at the front bumper. The function of which is to safeguard the passenger by absorbing kinetic energy of collision and self-deformation. It is found that for maximum safety the deformation should be small and the energy absorption is more. Hence by changing shape and size of crash box the properties can be varied as required. Therefore by considering the effect of shape the Author proposed a work on vehicle crash box analysis of different shapes such as circular, square, rectangular and hexagonal of same volume using ANSYS and the optimum crash box shape is proposed which has a comparatively small deformation for the same impact loading condition. The hexagonal crash box absorbs about 50% more energy than the existing crash box. Hexagonal crash box gives 16% less deformation compare to existing crash box and elastic strain is nearly twice that of existing crash box.