Affordable Access

Access to the full text

Design of roof panel with required bending stiffness using CFRP laminates

Authors
  • Lee, Jeong-Min1
  • Lee, Kyung-Hun2
  • Kim, Byung-Min3
  • Ko, Dae-Cheol3
  • 1 Pusan National University, Precision Manufacturing Systems Division, 63, Busandaehak-ro, Geumjeong-gu, Busan, 46241, South Korea , Busan (South Korea)
  • 2 Korea Maritime and Ocean University, Division of Marine Engineering, 727, Taejong-ro, Yeongdo-gu, Busan, 49112, South Korea , Busan (South Korea)
  • 3 Pusan National University, ERC of Innovative Technology on Advanced Forming, 63, Busandaehak-ro, Geumjeong-gu, Busan, 46241, South Korea , Busan (South Korea)
Type
Published Article
Journal
International Journal of Precision Engineering and Manufacturing
Publisher
Korean Society for Precision Engineering
Publication Date
Apr 16, 2016
Volume
17
Issue
4
Pages
479–485
Identifiers
DOI: 10.1007/s12541-016-0060-6
Source
Springer Nature
Keywords
License
Yellow

Abstract

Carbon-fiber-reinforced plastic (CFRP), which is strong and lightweight, is used in fabricating composites for a number of applications such as aircraft, transportation, and machinery. Automotive roof panels composed of CFRP require high strength and bending stiffness to ensure driver safety during rollover. Generally, the mechanical properties of CFRP products depend on the layup method. Therefore, this study aimed to design an automotive roof panel using CFRP laminates that would satisfy the bending stiffness requirements. Finite element (FE) analysis was used to predict the bending stiffness of automotive roof panels manufactured using CFRP laminates and thereby reduce the production time and cost. First, the CFRP laminate thickness necessary to achieve the required bending stiffness of 20 N/mm was determined. Automotive roof panels of four different thicknesses — 1.4, 1.6, 1.8, and 2.0 mm — were modeled and evaluated by FE analysis, and the 2.0-mm-thick panel was found to achieve the required bending stiffness. FE analysis was also used to evaluate the abilities of eight different lay-up methods to enhance the bending stiffness of automotive roof panels. Finally, CFRP roof panels fabricated using two different lay-up methods were evaluated by bending tests performed under the same conditions as those used in the FE analysis.

Report this publication

Statistics

Seen <100 times