INTERNATIONAL RESEARCH JOURNAL OF ENGINEERING AND TECHNOLOGY (IRJET) VOLUME: 04 ISSUE: 02 | FEB -2017
E-ISSN: 2395 -0056
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P-ISSN: 2395-0072
DESIGN OF AUTOMOBILE FRONT BUMPER FOR COLLISION ENERGY ATTENUATION 1. Bharat P. Patil, 2. Prashant N. Ulhe 1. M. E. Student, Mechanical Dept. SSBT’s COET, Bambhori, Jalgaon, Maharashtra, India. 2. Assistant Professor, Mechanical Dept. SSBT’s COET, Bambhori, Jalgaon, Maharashtra, India. ------------------------------------------------------------------------***-------------------------------------------------------------------------
Abstract – While designing the bumper in the automobile
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considering an impact during collision is important. The design must improve the ability to absorb more impact load, reducing stress, and increase the protection of the front car component. The method have been employed was study the front bumper system, design using CATIA software, and analyze the alternative front bumper material using ANSYS software.
Until now many research and experiment has done on bumper design. Ramin Hosseinzadeh et al. [1] (2004), has studied on parametric research of automotive composite bumper beams subjected to low-velocity impacts and concluded that fuel efficiency and emission gas regulations are the main causes for reducing the weight of passengers’ cars by the use of composite material structures. Hence the composite will probably the best material to produce an effective bumper. As per Marzbanrad J. M. et.al [2] the important parameters considered for design and analysis of an automotive front bumper beam to improve the crashworthiness design in low-velocity impact are material, thickness, shape and impact condition. Gintautas Dundulis et al. [3], Static analytical and experimental research of shock absorber to safe guard the nuclear fuel assemblies. Ping Yang et al. [4], Design, test and modeling evaluation approach of a novel Si-oil shock absorber for protection of electronic equipment in moving vehicles. In their study M. M. Davoodi et al. [5] studied on conceptual design of polymer composite automotive bumper energy absorber. It was observed that, major injury due to impact velocity of around 20-30 km/h was affected to the knee ligament. They proposed fiber reinforced epoxy composite material for bumper as a pedestrian energy absorber. The energy absorption capacity was sufficient for pedestrian impact and it could possible to use as substitute for the existing materials for low impact collision.
The aim of this work is to reduce the degree of damage to passengers, and vehicle’s body caused by vehicle collisions. Crash phenomena involving road vehicle were studied for the purpose of developing an impact attenuation design that can withstand specific speed.
Key Words: front bumper;composites;collision;ANSYS. I. INTRODUCTION In an automobile's structure bumper is the front-most or rear-most part. It is used to sustain an impact and reduce or prevent damage to the passengers, vehicle's frame or safety systems of car during low speed collision. Generally steel and Aluminum has been the dominant material for vehicle body in old days. But, now a days the front of car bumper is made by composite that suit for the commercial front bumper (1). The bumper is use to cover the bumper beam that connected to the car’s frame. Even it could prevent a small damage for the car, the front bumper important as an aesthetical value. Composite are the best materials for bumper which are aesthetically pleasant, lighter weight and offer many more substantial advantages (2).
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II. PROBLEM STATEMENT
Customer also blame to the manufacture that the bumper easily gets damaged although the collision was slow. The material of the bumper should be analyzed to find the alternative material that can improve the crashworthiness, also have toughness.
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Impact Factor value: 5.181
SOLID MODELING
A solid model is better because for an object it provides more complete representation than its surface model. It provides more topological information in addition to the geometrical information which helps to represent the solid unambiguously. There are different software that are used for generating these solid models like CATIA and Pro-E. In this project the frame is modeled by using CATIA V5. All the parts that are required for constructing the frame are modeled in part module by using different commands like extrude, loft, fillet, shell etc. as shown in Fig. 1.
Now a days accidents are frequent and cause damage to a vehicle’s body and became threat to human life. Hence crashworthiness of automobile bumper is essential. Also the cost for replacing bumper is quite expensive especially if surrounding area or part also damaged.
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