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http://dx.doi.org/10.3795/KSME-A.2014.38.1.031

Analytical and Experimental Study for Development of Composite Coil Springs  

Oh, Sung Ha (Maxoft Inc.)
Choi, Bok Lok (School of Mechanical and Automotive Engineering, Gangneung-Wonju Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.1, 2014 , pp. 31-36 More about this Journal
Abstract
This paper shows the feasibility of using carbon-fiber-reinforced polymer (CFRP) composite materials for manufacturing automotive coil springs. For achieving weight reduction by replacing steel with composite materials, it is essential to optimize the material parameters and design variables of the coil spring. First, the shear modulus of a CFRP beam model, which has $45^{\circ}$ ply angles for maximum torsional stiffness, was calculated and compared with the test results. The diameter of the composite spring was predicted to be 17.5 mm for ensuring a spring rate equal to that when using steel material. Finally, a finite element model of the composite coil spring with $45^{\circ}$ ply angles and 17.5 mm wire diameter was constructed and analyzed for obtaining the static spring rate, which was then compared with experimental results.
Keywords
Coil Spring; Spring Rate; CFRP; Anisotropic; FEM;
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Times Cited By KSCI : 3  (Citation Analysis)
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