Finite Element Analysis And Optimization Of A Vehicle Seat Frame

With the rapid development of China’s economy, the number of automotive in China keeps increasing and more and more attention is paid to automotive safety and comfort. As an important part of automotive constrains system, the vehicle seats link the occupant and the vehicle body guaranteeing the safety, making driving more comfortable. The harm which occupants get in a car accident can be reduced to a safe degree due to the scientific design. The purpose of vehicle seats’ strength designing is to keep the driver and the passenger safe in an accident during which the body structure keeps stable and functional. Nowadays, the light-weighting trend gains its popularity in the vehicle development because of the vehicle consumption and exhaust, thus the vehicle seats companies are bound to develop the lighter vehicle seats.According to the national standard GB15083-2006, GB11550-2009, GB14167-2013, the strength and the energy absorption of the impact of the vehicle middle P4 seat developed by a vehicle seat company and studied by Changan automobile commercial vehicle development center is analyzed in this paper, and the optimizations aiming at reducing weight are made consequently based on the strength analysis. The set’s FE molds are built by using powerful software HYPERMESH, and then the analyzed work and simulation is completed by LS-DYNA. The result of the simulation shows that the seat’s strength meets the national standard, and some potential weaker parts are analyzed in this paper. The light-weight optimization by changing materials and structures also meets the national standard. Replace the steel tube with magnesium alloy tube ensuring strength of seat and the mass of whole seat lighted.