TY - GEN
T1 - A case study
T2 - ASME 2015 International Mechanical Engineering Congress and Exposition, IMECE 2015
AU - Zhang, Haizhu
AU - Sun, Lingyu
AU - Leng, Dingxin
AU - Huang, Bincheng
AU - Wang, Ligang
N1 - Publisher Copyright:
Copyright © 2015 by ASME.
PY - 2015
Y1 - 2015
N2 - The current automotive seats are mainly manufactured by steel that increases the vehicle weights, fuel consumption and CO2 emissions, and hence, lightweight carbon fiber-reinforced polymer (CFRP) will be a prospective substitute material. The integrated design method of a CFRP seat backrest will be studied and verified numerically. On the condition that the unchangeable seat dimensions and previous mounting positions on the floor, a three-dimensional CAD conceptual model in which the design and non-design domains were separated was established firstly, and then, the optimal material distribution in the design domain was determined by topology optimization technology according to the ECE (European Union standards) test standard. Next, the positions of ribs are determined and the manufacturing feasibility was verified numerically. Finally, the finite element model of the CFRP seat backrest was established, and static bending stiffness and crashworthiness were analyzed and the simulation results were compared with the previous allsteel structure. It is demonstrated that a 20.4% weight reduction is achieved, and previous 26 steel components could be replaced by only one CFRP component and no additional assembly is required. Both the static and impact test standards are satisfied.
AB - The current automotive seats are mainly manufactured by steel that increases the vehicle weights, fuel consumption and CO2 emissions, and hence, lightweight carbon fiber-reinforced polymer (CFRP) will be a prospective substitute material. The integrated design method of a CFRP seat backrest will be studied and verified numerically. On the condition that the unchangeable seat dimensions and previous mounting positions on the floor, a three-dimensional CAD conceptual model in which the design and non-design domains were separated was established firstly, and then, the optimal material distribution in the design domain was determined by topology optimization technology according to the ECE (European Union standards) test standard. Next, the positions of ribs are determined and the manufacturing feasibility was verified numerically. Finally, the finite element model of the CFRP seat backrest was established, and static bending stiffness and crashworthiness were analyzed and the simulation results were compared with the previous allsteel structure. It is demonstrated that a 20.4% weight reduction is achieved, and previous 26 steel components could be replaced by only one CFRP component and no additional assembly is required. Both the static and impact test standards are satisfied.
KW - Auto-motive seat
KW - Carbon fiber reinforced polymer
KW - Finite element method
KW - Injection molding
UR - https://www.scopus.com/pages/publications/84982962189
U2 - 10.1115/IMECE201550821
DO - 10.1115/IMECE201550821
M3 - 会议稿件
AN - SCOPUS:84982962189
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Transportation Systems
PB - American Society of Mechanical Engineers (ASME)
Y2 - 13 November 2015 through 19 November 2015
ER -