Design of roof panel with required bending stiffness using CFRP laminates

被引：21

作者：

Lee, Jeong-Min ^{[1
]}

Lee, Kyung-Hun ^{[2
]}

Kim, Byung-Min ^{[3
]}

Ko, Dae-Cheol ^{[3
]}

机构：

[1] Pusan Natl Univ, Precis Mfg Syst Div, 63 Busandaehak Ro, Busan 46241, South Korea

[2] Korea Maritime & Ocean Univ, Div Marine Engn, 727 Taejong Ro, Busan 49112, South Korea

[3] Pusan Natl Univ, ERC Innovat Technol Adv Forming, 63 Busandaehak Ro, Busan 46241, South Korea

来源：

INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING | 2016年 / 17卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

CFRP laminates; Roof panel; Bending stiffness; Lay-up method; FE-analysis; COMPOSITES; CARBON;

D O I：

10.1007/s12541-016-0060-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：479 / 485

页数：7

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