Vibration and Impact Analysis of Optimized Automotive Front Bumper

Abstract

This Safety is the major concern in automotive engineering because of rate of accident increasing worldwide. Generally, in most of the accident during front collision bumper hits the other vehicle. The main function of front bumper is to absorb the possible crash energy during collision and should have low weight apart from the safety. In automobile industries importance also given to fuel efficiency and emission gas regulation, that gives advantage to manufacturer in weight reduction of automotive. The main factor affecting bumper like shape optimization, impact condition & vibration are studied for design and analysis of front bumper to improve cross worthiness. Here shape geometry is studied to design the optimized structure of bumper and impact behaviour analysis is carried on it to find out energy absorption capacity also easiness of manufacturing studied parallelly. In this research, impact dynamic behaviour analysis of optimized front bumper without stiffener and with stiffener are carried out and compare their energy absorption capacity. Experimentally validate the natural frequencies obtained from FFT analyzer with Modal analysis using FEA software and those are closely matched. While building the prototype, found that designed bumper structure is easy to manufacture too. Keywords—Bumper; result against stress distribution, energy absorption, deformation and found that bumper with stiffener have more