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FROM:
M.F. Nasr, A.A. El-Zoghby, K.Y. Maalawi, B.S. Azzam and M.A. Badr, “Torsional buckling optimization of composite drive shafts”, World Applied Sciences Journal, Vol. 33, No. 3, pp 517-524, 2015
DOI: 10.5829/idosi.wasj.2015.33.03.14573
ABSTRACT: One interesting application of composite materials is the composite drive shafts as power transmission tubing which are used in many mechanical and structural systems; such as automobiles, marine and flight vehicles, gas and wind turbines...etc. In this paper, a composite drive shaft for an automotive application is optimized for maximizing the torsional buckling torque under mass constraint. Other constraints include bending natural frequency as well as interlaminar shear failure criterion. The selected design variables are the fiber volume fraction, fiber orientation angle and thickness of each composite layer. A case study for a simply supported drive shaft made of carbon/epoxy composite material is considered through the work of this paper. The attained optimum solutions are compared with a known baseline design having the same length, same cross section and same material properties. The optimization problem is built in a nondimensional form; and Global Optimization Toolbox in MATLAB program has been implemented for modeling the optimization problem. It was found that the cross-ply layup gives the best results for maximum buckling torque and bending natural frequency without mass penalty.
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