No abstract

In the present study, an analysis of stresses and shear correction factors are carried out for a homogeneous polyethylene thermoplastic cantilever beam which is reinforced by steel fibers and whose cross section is rectangular. The beam exhibits in-plane shear deformation by an applied shear force and there exists the effect of extension-shear coupling which does not exist in out-ofplane shear deformation. The shear correction factor is defined taking into account the coupling effect. The distributions of normal stress, shear stress, and shear strain across the cross section of the rectangular solid beam are obtained analytically. In order to verify the analytical solution results were compared with the finite element method. A rectangular element with nine nodes has been choosen. A composite plate is meshed into 48 elements and 228 nodes with simply supported and in-plane loading conditions. Predictions of the stress distributions of the beam using finite elements were overall in good agreement with analytical values. The variation of shear correction factors for the composite beam is also investigated with the change of ply angles.

In this work, an elastic-plastic stress analysis has been conducted for silicon carbide fiber-reinforced magnesium metal-matrix composite beam. The composite beam has a rectangular cross section. The beam is cantilevered and is loaded by a single force at its free end. In solution, the composite beam is assumed perfectly plastic to simplify the investigation. An analytical solution is presented for the elastic-plastic regions. In order to verify the analytical solution results were compared with the finite element method. A rectangular element with nine nodes has been chosen. A composite plate is meshed into 48 elements and 228 nodes with simply supported and in-plane loading conditions. Predictions of the stress distributions of the beam using finite elements were overall in good agreement with the analytical values. Stress distributions of the composite beam are calculated with respect to its fiber orientation. Orientation angles of the fiber are chosen as 0, 30, 45, 60, and 90. The plastic zone expands more at the upper side of the composite beam than at the lower side for 30, 45, and 60 orientation angles. Residual stress components of x and xy are also found in the section of the composite beam.

The paper presents a thermal behavior analysis of metal matrix composite lamina and laminates during a cooling process. A long stainless steel fiber reinforced aluminum metal matrix composite lamina and laminate are used for this purpose. Metal matrix composites were manufactured by using modulus under the action of 30 MPa pressure and heating up to 600 °C. The thermal stresses generated during cooling have a profound effect on the distortion and strength of the composite materials. In this study, thermal stresses, residual stresses and effective thermal expansion coefficients as a function of orientation angle of the aluminum metal matrix composite during a cooling process are investigated. The finite element method was used for thermal stress analysis. For this purpose, four noded rectangular elements were used in the ANSYS finite element code.

Metal-matrix composite plates consists of several layers of unidirectionally reinforced, fibrous composite laminae which have different in-plane orientations and are bonded together in a certain stacking sequence. Thus, they provide new materials with superior properties of high strength and stiffness. This study deals with analysis of rectangular metal-matrix composite laminates with circular holes under in-plane static loadings. The first-order shear deformation theory is employed in mathematical formulation. The effects on critical load by hole size, ply lamination geometry, plate thickness ratio, loading types and material modulus ratio have been investigated. The finite element method is used for finding critical loads. Numerical solutions are given in graphical forms.