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A novel refined shear deformation theory for the buckling analysis of thick isotropic plates
M. Fellah,Kada Draiche,Mohammed Sid Ahmed Houari,Abdelouahed Tounsi,Tareq Saeed,Mohammed Sh Alhodaly,Mohamed Benguediab 국제구조공학회 2019 Structural Engineering and Mechanics, An Int'l Jou Vol.69 No.3
In present study, a novel refined hyperbolic shear deformation theory is proposed for the buckling analysis of thick isotropic plates. The new displacement field is constructed with only two unknowns, as against three or more in other higher order shear deformation theories. However, the hyperbolic sine function is assigned according to the shearing stress distribution across the plate thickness, and satisfies the zero traction boundary conditions on the top and bottom surfaces of the plate without using any shear correction factors. The equations of motion associated with the present theory are obtained using the principle of virtual work. The analytical solution of the buckling of simply supported plates subjected to uniaxial and biaxial loading conditions was obtained using the Navier method. The critical buckling load results for thick isotropic square plates are compared with various available results in the literature given by other theories. From the present analysis, it can be concluded that the proposed theory is accurate and efficient in predicting the buckling response of isotropic plates.
Speed Control of Linear Induction Motor using Sliding Mode Controller Considering the End Effects
Boucheta, A.,Bousserhane, I.K.,Hazzab, A.,Sicard, P.,Fellah, M.K. The Korean Institute of Electrical Engineers 2012 Journal of Electrical Engineering & Technology Vol.7 No.1
In the present paper, the mover speed control of a linear induction motor (LIM) using a sliding mode control design is proposed, considering the end effects. First, the indirect field-oriented control LIM is derived, considering the end effects. The sliding mode control design is then investigated to achieve speed- and flux-tracking under load thrust force disturbance. The numerical simulation results of the proposed scheme present good performances in comparison to that of the classical sliding mode control.
Speed Control of Linear Induction Motor using Sliding Mode Controller Considering the End Effects
A. Boucheta,I. K. Bousserhane,A. Hazzab,P. Sicard,M. K. Fellah 대한전기학회 2012 Journal of Electrical Engineering & Technology Vol.7 No.1
In the present paper, the mover speed control of a linear induction motor (LIM) using a sliding mode control design is proposed, considering the end effects. First, the indirect field-oriented control LIM is derived, considering the end effects. The sliding mode control design is then investigated to achieve speed- and flux-tracking under load thrust force disturbance. The numerical simulation results of the proposed scheme present good performances in comparison to that of the classical sliding mode control.