BENDING STRESS ANALYSIS OF AXIALLY LAYERED FUNCTIONALLY GRADED BEAMS

In this study, the bending stress analysis of axially layered functionally graded beams subjected to their own weight were evaluated under clamped-free (C-F) boundary condition. The beams have four layers and each layer consist of different aluminium (Al)/monotungsten carbide (WC) systems based on increasing of the 6% WC. The layer positions in the beams were performed based on Taguchi L16 (4*4) orthogonal array design. The layers were considered as control factors and each layer has four levels. The analysis of signal-to-noise (S/N) ratios were used to obtain the optimum layer levels. Analyses were performed using finite element software ANSYS. In addition, analysis of variance (ANOVA) was performed to determine the important levels and percent contributions of the layers on the responses. The numerical results show that the increasing of the layer levels increases the bending stress and percent contributions of Layer 1, Layer 2, Layer 3 and Layer 4 on the bending stress were obtained as 1.12%, 11.83%, 29.54% and 57.48%, respectively.

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