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RISS 인기검색어
- 검색키워드
- 저자 : Hussain H. Al-Kayiem (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Dynamic analysis of laminated composite thermo-magneto-electro-elastic shells
Thar M. Badri Albarody,Hussain H. Al-Kayiem 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.12
Modeling of piezo-laminated shell structure and/or shell embedded smart lamina influenced by thermo-magneto-electro-elastic loadpresents a challenge to be formulated and solved. We derived an analytical model based on the first-order transversally shear deformationtheory with involvement of Codazzi-Gauss geometrical discretion. The present invented model and the desired boundary conditions wererigorouslyderived using Hamilton's principle with cooperationof Gibbs free energy functions. The model was castin theversion of a generallaminated composite shell of revolution, in order to be simplified to account for most occurring shell geometries, and intended forwide range of smart materials. To ensure a conventional effective medium model, a rectangular plane shell of zero and large curvatureswasselected for analysis to justify the model. Hence, the generic forced-solution procedures for the response were derived, and its naturalfrequencies were evaluated in a simply supported boundary condition. Investigatedexamples areaccompanied and noteworthy conclusionsdrawn which highlight the issues of the implementation of the exact solution, implication of the effects of the material properties,lay-ups of the constituent layers, and shell parameters on the free vibrational behavior.
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The transverse shear deformation behaviour of magneto-electro-elastic shell
Thar M. Badri Albarody,Hussain H. Al-Kayiem,Waleed Faris 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.1
Compared to the large number of possible magneto-electro-elastic shell theories, very few exact solutions determining the in-planestresses, electric displacements and magnetic inductions are possible. While, solving the magneto-electro-elastic shell equations in termsof thermo-magneto-electro-elastic generalized field functions on arbitrary domains and for general conditions exactly are not alwayspossible. In the present work, a linear version of magneto-electro-elastic shell with simply supported boundary conditions, solved exactly,provided that the lamination scheme is cross-ply or anti-symmetric angle-ply laminates. The exact solution that introduced herein canmeasure the in-plane stresses, electric displacements and magnetic inductions. It also allow for an accurate and usually elegant and conclusiveinvestigation of the various sensations in a shell structure. However, it is important for micro-electro-mechanical shell applicationsto have an approach available that gives the transverse shear deformation Behaviourfor cases that cannot examine experimentally. An investigated examples were accompanied and noteworthy conclusions were drawn which highlight the issues of the implementationof the exact solution, implication of the effects of the material properties, lay-ups of the constituent layers, and shell parameters on thestatic Behaviour.
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Hasanain A. Abdul Wahhab,A. Rashid A. Aziz,Hussain H. Al-Kayiem,Mohammed S. Nasif,Lukmon O. Afolabi 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.11
This paper describes an analytical study of the magneto hydrodynamics of small CNG bubbles in laminar horizontal diesel flow under the influence of a magnetic field. The investigation is based on experiments carried out to identify the effect of varying the magnetic field intensity on the trajectory, the formation of bubbles and their shape and velocity in the flow. Different images at different positions downstream of the CNG bubbles injection point were captured by a high speed camera and analyzed by image processing techniques provided information on bubble velocity, bubbles size, spatial location and gas area fraction as a function of changing the magnetic field intensity. The outcomes confirmed that CNG bubbles under magnetic field grow up vertically to an elliptical shape in the diesel phase with a mean diameter about twice that of the original bubble. It was also noticed that the velocity of the CNG bubbles decreased as the strength of the magnetic field increased.
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