Automotive Seat Modeling and Simulation for Occupant Safety using Dynamic Sled Testing Dr. Vikrama Singh Professor Mech. Engineering Dept.Pad.Dr.D.Y.Patil Institute of Engineering & Tech.Pimpri Pune Mr. Sohail Ahmed Shaikh M.E. Mech. Design Engineering Pad .Dr.D.Y.Patil Institute of Engineering & Tech .Pimpri Pune Abstract— The study and analysis of damage caused during rear impact on seat structure and Procedure of sled testing, safety requirement can be decided by deformation and damage caused during sled testing it is kind of dynamic analysis. The projected seat went a complete simulation in L.S.Dyna. This provides us to exhibit our ability to build a seat and give confidence in our component technologies as well as our simulation and analysis methods.FE analysis of automotive seat with Dynamic sled testing is carried out using the Altair Hyper mesh v12 tool for meshing and LS- Dyna Explicit Dynamic Solver for analysis. The behavior of the deformation of seat back frame is studied by changing the stiffness of seat back frame for the safety of the occupant Keyword- Finite Element Analysis, Sled test, Automotive seat, Dynamic Analysis. I. INTRODUCTION The objective is to reveal the methods used, limitations discovered and improvements for future analyses. This study is intended to evaluate and reduce the injuries sustained by an occupant and to evaluate the damage displaced luggage causes during impact on the seat structure. The purpose of the seat development cycle for designing a seat that may well fit diversity automotive environments at time also giving a prospect to go further than component stage design, full scale dynamic testing of an automotive seat simulation and Testing. By the individual advancements in recliner, track, lock, seat pan and Seatback design the seat was developed, using advanced adjuster link and motor layout. The projected seat went a complete simulation in L.S.Dyna. This provides us to exhibit our ability to build a seat and give confidence in our component technologies as well as our simulation and analysis methods .for applicable to as a standard seat platform the North American and European Motor vehicle standards have been selected as minimum acceptance criteria. Seating Systems:- FMVSS 207 Specifically, Protection From Displaced Luggage:- ECE 17 We considered rear, the simulations is not clearly defined by an FMVSS or ECE regulation. The rear impacts loading are standard versions of OEM necessities. Throughout the design. II. PROBLEM AND PURPOSE Problem Definition- In Automotive seats in case of rear impact loading condition the Luggage displaced and seat bending should have some limiting angle or displacement or deformation otherwise it is unsafe and uncomfortable to occupant paper size. Aim-To Optimize the deformation or displacement of Back frame to H-point as per FMVSS standard 207E and ECE17E for passenger safety by varying stiffness of seat . Dynamic sled testing is carried out using the Altair Hyper mesh v12 tool for meshing and LS-Dyna Explicit Dynamic Solver for analysis. . III. METHODOLOGY A. Geometric Modeling- In Design the model of seat is modeled in Catia V5 R18 software as shown in below Figure01-Geometric Model of Seat with Sled Modeled in CATIA B. Finite Elemrnt Modeling and Simulation- The surfaces of the geometric CAD model generated in CATIA V5 are meshed using shell elements to represent the relatively thin sheet metal structures of the seat. Four node quadrilateral elements with size of 8-10 mm have been generated for all the surfaces. Triangular elements are also allowed in the finite element mesh in order to allow good mesh quality Vol. 3 Issue 7, July - 2014 International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181 www.ijert.org IJERTV3IS071239 (This work is licensed under a Creative Commons Attribution 4.0 International License.) 1501