Composite side-door impact beams for passenger cars

Abstract The fuel efficiency and emission gas regulation of passenger cars are two important issues nowadays. The best way to increase fuel efficiency without sacrificing safety is to employ fibre-reinforced composite materials in the body of cars because fibre-reinforced composite materials have higher specific strengths than those of steel. In this study, the side-door impact beam for passenger cars was developed using glass-fibre-reinforced composite materials as metals usually have a lower capacity of impact absorption energy at low temperature compared with that of glass-fibre-reinforced composite materials. Static tests were carried out to determine the optimum fibre stacking sequences and cross-sectional thickness for the composite impact beams taking consideration of the weight saving ratio compared to the high strength steel. Dynamic tests were carried out at several different temperatures using the pneumatic impact tester, which was developed to investigate the dynamic characteristics of impact beams at a speed of 30 mph. Also, finite-element analyses were performed using ABAQUS, a commercial software to compare the simulated characteristics of the impact beams with the experimental results. From the comparison, it was found that the results from the finite-element analyses showed good agreement with the experimental results, although several assumptions were made in the finite-element analyses.

[1]  Wing Kong Chiu,et al.  Designing for damage tolerant bonded joints , 1993 .

[2]  F. Hauser,et al.  Deformation and Fracture Mechanics of Engineering Materials , 1976 .

[3]  Lh Strait,et al.  Effects of Stacking Sequence on the Impact Resistance of Carbon Fiber Reinforced Thermoplastic Toughened Epoxy Laminates , 1992 .

[4]  P. Beardmore Composite structures for automobiles , 1986 .

[5]  Residual Stresses and Delamination Problems Induced by Cocuring of Damped Composite Laminates , 1994 .

[6]  Dai Gil Lee,et al.  A study on the epoxy resin concrete for the ultra-precision machine tool bed , 1995 .

[7]  Yoon Keun Kwak,et al.  Manufacturing of a Scara Type Direct-Drive Robot with Graphite Fiber Epoxy Composite Material , 1991, Robotica.

[8]  Gregory M. Glenn,et al.  Fiber-reinforced composites , 1988 .

[9]  P. H. Thornton,et al.  Crash energy management in composite automotive structures , 1988 .

[10]  R. Gibson Principles of Composite Material Mechanics , 1994 .

[11]  Dai Gil Lee,et al.  Development of a strength model for the cocured stepped lap joints under tensile loading , 1995 .

[12]  Y. G. Kim,et al.  MANUFACTURING OF THE COMPOSITE SCREW ROTORS BY RESIN TRANSFER MOLDING , 1995 .

[13]  Dai Gil Lee,et al.  Development of the anthropomorphic robot with carbon fiber epoxy composite materials , 1993 .

[14]  Stephen R Reid,et al.  Indentation of laminated filament-wound composite tubes , 1993 .

[15]  D. Lee,et al.  Torque Transmission Capabilities of Bonded Polygonal Lap Joints for Carbon Fiber Epoxy Composites , 1995 .

[16]  P. H. Thornton,et al.  Energy Absorption in Composite Structures , 1979 .

[17]  Dai Gil Lee,et al.  DEVELOPMENT OF THE COMPOSITE FLEXSPLINE FOR A CYCLOID-TYPE HARMONIC DRIVE USING NET SHAPE MANUFACTURING METHOD , 1995 .