Cuba, L., Arciniega, R., MANTARI, J. (2019). Generalized 2-Unknown’s HSDT to Study Isotropic and Orthotropic Composite Plates. Journal of Applied and Computational Mechanics, 5(1), 141-149. doi: 10.22055/jacm.2018.24953.1222

Lizbeth Cuba; RA Arciniega; J.L. MANTARI. "Generalized 2-Unknown’s HSDT to Study Isotropic and Orthotropic Composite Plates". Journal of Applied and Computational Mechanics, 5, 1, 2019, 141-149. doi: 10.22055/jacm.2018.24953.1222

Cuba, L., Arciniega, R., MANTARI, J. (2019). 'Generalized 2-Unknown’s HSDT to Study Isotropic and Orthotropic Composite Plates', Journal of Applied and Computational Mechanics, 5(1), pp. 141-149. doi: 10.22055/jacm.2018.24953.1222

Cuba, L., Arciniega, R., MANTARI, J. Generalized 2-Unknown’s HSDT to Study Isotropic and Orthotropic Composite Plates. Journal of Applied and Computational Mechanics, 2019; 5(1): 141-149. doi: 10.22055/jacm.2018.24953.1222

Generalized 2-Unknown’s HSDT to Study Isotropic and Orthotropic Composite Plates

^{1}Department of Civil Engineering, Universidad Peruana de Ciencias Aplicadas (UPC), Surco, Lima, Peru

^{2}Faculty of Mechanical Engineering, Universidad de Ingeniería y Tecnología (UTEC), Barranco, Lima, Peru

^{3}Department of Mechanical Engineering, University of New Mexico, Albuquerque 87131, USA

Abstract

The present study introduces a generalized 2-unknown’s higher order shear deformation theory (HSDT) for isotropic and orthotropic plates. The well-known Shimpi’s two-unknown's HSDT is reproduced as a special case. Reddy’s shear strain shape function (SSSF) is also adapted to the present generalized theory. The results show that both Shimpi and the adapted Reddy’ HSDT are essentially the same, i.e., both present the same static results. This is due to the fact that both theories use polynomial SSSFs. This study presents a new optimized cotangential SSSF. The generalized governing equation obtained from the principle of virtual displacement is solved via the Navier closed-form solution. Results show that transverse shear stresses can be improved substantially when non-polynomial SSSFs are utilized. Finally, this theory is attractive and has the potential to study other mechanical problems such as bending in nanoplates due to its reduced number of unknown’s variables.

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