International Journal of Engineering and Advanced Technology (IJEAT) ISSN: 2249 – 8958, Volume-9 Issue-3, February, 2020 3399 Published By: Blue Eyes Intelligence Engineering & Sciences Publication Retrieval Number: C6259029320 /2020©BEIESP DOI: 10.35940/ijeat.C6259.029320 Abstract: In vehicle design, safety of occupants is one of the most important criteria. During side collisions, space between vehicle body and occupants is very less as compared to frontal collision. Hence, scope for energy absorption due to deformation of vehicle body in side collisions is less. The strength of side door plays important role in the framework of vehicle side body. The strength of side doors during side collision depends upon the impact beam, vehicle construction, layout of doors etc. Among the mentioned parameters, strength of impact beam is a crucial parameter. The impact beam absorbs notable amount of impact energy by deforming during side collision. Design of side impact beam should be optimum as it is limited by weight of vehicle. Parameters like material, dimensions, shape and mountings of beam inside the door are affecting the strength of side impact beam. In this work parameters of circular cross-section impact beam like diameter of beam, thickness of beam and angle of mounting inside the door are studied. Finite element simulation of side impact beam is done in ABAQUS software and its relative effects on Specific Energy Absorption (SEA) capacity of beam is studied. The simulation results are validated with available literatures. The ANOVA analysis followed by Design of Experiments is used to determine contribution of each parameter on SEA. Further various parameters of circular impact beam are studied by examining the result analysis for crashworthiness of side door. Keywords: Side impact beam; Side intrusion beam; vehicle side door; Taguchi method; ANOVA; crashworthiness of side door, Specific Energy Absorption I. INTRODUCTION Road accidents are major causes of premature deaths in India. It also leads to severe injuries, permanent disabilities and financial losses to the occupants. In 2018, India had 4, 67,044 road accidents. Out of total accidents 1, 51,417 occupants were dead and 4, 69,418 were severely injured [1]. The data also shockingly shows that in year 2018, in India per day 1279 road accidents occurred and 414 peoples died. Out Revised Manuscript Received on February 26, 2020. * Correspondence Author Sanjay D. Patil*, Autombile Engineering Department, Government College of Engineering and Research, Avasari (kh), Pune, India. Email: sanjaypatil365@gmail.com Dheeraj S. Lengare, Autombile Engineering Department, Government College of Engineering and Research, Avasari (kh), Pune, India. Email: lengare27@gmail.com Arvind J. Bhosale, Autombile Engineering Department, Government College of Engineering and Research, Avasari (kh), Pune, India. Email: pawandeep94@gmail.com Kiran B. Bansode, Autombile Engineering Department, Government College of Engineering and Research, Avasari (kh), Pune, India. Email: kiran261282@gmail.com Rashtrapal B. Teltumade, Autombile Engineering Department, Government College of Engineering and Research, Avasari (kh), Pune, India. Email: rashtrapal_teltumade@rediffmail.com of these total accidents, 58,774 accidents were side impact collisions and 15,477 people’s had lost their lives [1]. This study also shows that in year 2018, average 10.2% lives are lost due to side impact collision. All this data shows that, the effects of side collision on vehicle design should be properly analyze. Generally in cars, active and passive safety systems are installed to protect the occupants. Active system technologies like traction control system, antilock-brake system etc. assists in prevention of collision. There are also passive systems like side air bag, seat belt, side impact beam etc. which prevent the occupants from severe injuries during collisions [2-3]. During side impact collisions, only side door is in between the occupant and the external object. Hence, the crashworthiness of car side door is crucial parameter during side impact collision. Crashworthiness is ability of the side door to absorb the impact energy during collision. Side impact beam also known as side intrusion beam, installed inside the side door is the key element in side door for crashworthiness [4-6]. During the side impact collision, the side impact beam gets deformed and it absorbs the impact energy of collision. As the Space between occupant and side door is less compared to the space between the frontal vehicle body, side impacts have the less scope for large deformations and leads in less amount of impact energy absorption [6-7]. Due to above concerns, proper study of design of an effective side impact beam is important. Currently vehicle sold in various countries around the globe are tested for various vehicle compliance like side crash safety, United state regulation Federal Motor Vehicle Safety Standards (FMVSS) No. 214, European Union regulation ECER95, China Regulation GB20071-2006 and Indian standards IS 12009-1996 etc. Homologation to the vehicles is given only after the vehicle successfully meets regulatory standards and specifications prescribed by the respective countries [8-11]. As per the Indian standards IS 12009, a long cylindrical or semi cylindrical rigid steel bar of 300mm diameter is intruded along the circumferential surface on the side door from outside. The initial crush resistance, Intermediate crush resistance and peak crush resistances are measured at 150mm, 300mm and 450mm of crush distance respectively. As per the standards, the initial crush resistance should not be less than 10kN or 0.6 times of kerb weight of vehicle, the Intermediate crush resistance should not be less than 20kN or 1.2 times of kerb weight of vehicle and peak crush resistances should not be less than 55kN or 2 times of kerb weight of vehicle [10, 12]. Parameters Affecting the Specific Energy Absorption of Circular Side Impact Beam Sanjay D. Patil, Dheeraj S. Lengare, Arvind J. Bhosale, Kiran B. Bansode, Rashtrapal B. Teltumade