Documents disponibles écrits par cet auteur

Beam bending solutions based on nonlocal timoshenko beam theory / Wang, C. M. in Journal of engineering mechanics, Vol. 134 n°6 (Juin 2008) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 134 n°6 (Juin 2008) . - pp.475–481. Titre : Beam bending solutions based on nonlocal timoshenko beam theory Type de document : texte imprimé Auteurs : Wang, C. M., Auteur ; S. Kitipornchai, Auteur ; C. W. Lim, Auteur Année de publication : 2008 Article en page(s) : pp.475–481. Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Beams  Bending  Elasticity Résumé : This paper is concerned with the bending problem of micro- and nanobeams based on the Eringen nonlocal elasticity theory and Timoshenko beam theory. In the former theory, the small-scale effect is taken into consideration while the effect of transverse shear deformation is accounted for in the latter theory. The governing equations and the boundary conditions are derived using the principle of virtual work. General solutions for the deflection, rotation, and stress resultants are presented for transversely loaded beams. In addition, specialized bending solutions are given for beams with various end conditions. These solutions account for a better representation of the bending behavior of short, stubby, micro- and nanobeams where the small-scale effect and transverse shear deformation are significant. Considering particular loading and boundary conditions, the effects of small-scale and shear deformation on the bending results may be observed because of the analytical forms of the solutions. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282008%29134%3A6%2847 [...] [article] Beam bending solutions based on nonlocal timoshenko beam theory [texte imprimé] / Wang, C. M., Auteur ; S. Kitipornchai, Auteur ; C. W. Lim, Auteur . - 2008 . - pp.475–481. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 134 n°6 (Juin 2008) . - pp.475–481. Mots-clés : Beams  Bending  Elasticity Résumé : This paper is concerned with the bending problem of micro- and nanobeams based on the Eringen nonlocal elasticity theory and Timoshenko beam theory. In the former theory, the small-scale effect is taken into consideration while the effect of transverse shear deformation is accounted for in the latter theory. The governing equations and the boundary conditions are derived using the principle of virtual work. General solutions for the deflection, rotation, and stress resultants are presented for transversely loaded beams. In addition, specialized bending solutions are given for beams with various end conditions. These solutions account for a better representation of the bending behavior of short, stubby, micro- and nanobeams where the small-scale effect and transverse shear deformation are significant. Considering particular loading and boundary conditions, the effects of small-scale and shear deformation on the bending results may be observed because of the analytical forms of the solutions. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282008%29134%3A6%2847 [...]

Dynamic instability of nanorods/nanotubes subjected to an end follower force / Y. Xiang in Journal of engineering mechanics, Vol. 136 N° 8 (Août 2010) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 136 N° 8 (Août 2010) . - pp. 1054-1058 Titre : Dynamic instability of nanorods/nanotubes subjected to an end follower force Type de document : texte imprimé Auteurs : Y. Xiang, Auteur ; Wang, C. M., Auteur ; S. Kitipornchai, Auteur Article en page(s) : pp. 1054-1058 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Dynamic  stability  Nanotechnology  Rods  Elasticity  Flutter. Résumé : This paper presents an investigation on the dynamic instability of cantilevered nanorods/nanotubes subjected to an end follower force. Eringen's nonlocal elasticity theory is employed to allow for the small length scale effect in the considered dynamic instability problem. The general solution for the governing differential equation is obtained and the dynamic instability characteristic equation is derived by applying the boundary conditions. Exact critical load factors are obtained. These nonlocal solutions are compared with the classical local solutions to assess the sensitivity of the small length scale effect on the critical load factors and flutter mode shapes. It is found that the small length scale effect decreases the critical load and the corresponding frequency parameters as well as reduces the severity of the double-curvature flutter mode shape. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JENMDT000 [...] [article] Dynamic instability of nanorods/nanotubes subjected to an end follower force [texte imprimé] / Y. Xiang, Auteur ; Wang, C. M., Auteur ; S. Kitipornchai, Auteur . - pp. 1054-1058. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 136 N° 8 (Août 2010) . - pp. 1054-1058 Mots-clés : Dynamic  stability  Nanotechnology  Rods  Elasticity  Flutter. Résumé : This paper presents an investigation on the dynamic instability of cantilevered nanorods/nanotubes subjected to an end follower force. Eringen's nonlocal elasticity theory is employed to allow for the small length scale effect in the considered dynamic instability problem. The general solution for the governing differential equation is obtained and the dynamic instability characteristic equation is derived by applying the boundary conditions. Exact critical load factors are obtained. These nonlocal solutions are compared with the classical local solutions to assess the sensitivity of the small length scale effect on the critical load factors and flutter mode shapes. It is found that the small length scale effect decreases the critical load and the corresponding frequency parameters as well as reduces the severity of the double-curvature flutter mode shape. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JENMDT000 [...]

Plastic-buckling of rectangular plates under combined uniaxial and shear stresses / Wang, C. M. in Journal of engineering mechanics, Vol. 135 N° 8 (Août 2009) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 135 N° 8 (Août 2009) . - pp. 892-895 Titre : Plastic-buckling of rectangular plates under combined uniaxial and shear stresses Type de document : texte imprimé Auteurs : Wang, C. M., Auteur ; Aung, Tun Myint, Auteur ; S. Kitipornchai, Auteur Article en page(s) : pp. 892-895 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Buckling  Combined  stress  Plastic  analysis  Plates  Shear  deformation. Résumé : This paper is concerned with the plastic-buckling of rectangular plates under uniaxial compressive and shear stresses. In the prediction of the plastic-buckling stresses, we have adopted the incremental theory of plasticity for capturing the inelastic behavior, the Mindlin plate theory for the effect of transverse shear deformation, the Ramberg-Osgood stress–strain relation for the plate material, and the Ritz method for the bifurcation buckling analysis. The interaction curves of the plastic uniaxial buckling stress and the plastic shear buckling stress for thin and thick rectangular plates are presented for various aspect ratios. The effect of transverse shear deformation is examined by comparing the interaction curves obtained based on the Mindlin plate theory and the classical thin plate theory. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...] [article] Plastic-buckling of rectangular plates under combined uniaxial and shear stresses [texte imprimé] / Wang, C. M., Auteur ; Aung, Tun Myint, Auteur ; S. Kitipornchai, Auteur . - pp. 892-895. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 135 N° 8 (Août 2009) . - pp. 892-895 Mots-clés : Buckling  Combined  stress  Plastic  analysis  Plates  Shear  deformation. Résumé : This paper is concerned with the plastic-buckling of rectangular plates under uniaxial compressive and shear stresses. In the prediction of the plastic-buckling stresses, we have adopted the incremental theory of plasticity for capturing the inelastic behavior, the Mindlin plate theory for the effect of transverse shear deformation, the Ramberg-Osgood stress–strain relation for the plate material, and the Ritz method for the bifurcation buckling analysis. The interaction curves of the plastic uniaxial buckling stress and the plastic shear buckling stress for thin and thick rectangular plates are presented for various aspect ratios. The effect of transverse shear deformation is examined by comparing the interaction curves obtained based on the Mindlin plate theory and the classical thin plate theory. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...]