We examine numerically the uniaxially compressed stability of triaxially woven fabric (TWF) composites employing a proposed geometrically nonlinear finite composite plate element model with volume segmentation ABD constitutive relation, taking advantage of greatly reduced degrees of freedom. From satisfactory agreement with results from literature, numerous boundary conditions are explored for various aspect ratios in the buckling analysis. High dependencies of post-buckling patterns on plate aspect ratios are observed, from which a computationally time-saving characteristic equations have been defined before the occurrence of post-buckling state for practical convenience, best described on the basis of logarithmic critical buckling load and stiffness factor. These buckling characteristics have a direct general correlation to TWF's aspect ratios and boundary rigidities.
The present paper studies the fundamental problem of the biomagnetic fluid flow in a channel under the influence of a spatially varying magnetic field. The solution of the problem is obtained using an improved finite difference method. This approach has successful handled the pressure of the flow which is the main problem in the finite difference method. Results concerning the velocity indicates that the presence of magnetic field appreciably influence the flow field. A distortion in terms of asymmetric flow profile was observed near the magnetic source. Also a vortex is demonstrated near the lower plate where the magnetic source is placed.
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