Influence of Winkler-Pasternak Foundation on the Vibrational Behavior of Plates and Shells Reinforced by Agglomerated Carbon Nanotubes

被引：64
作者：
Banic, Damjan [1 ]
Bacciocchi, Michele [2 ]
Tornabene, Francesco [2 ]
Ferreira, Antonio J. M. [3 ]
机构：
[1] Univ Rijeka, Dept Engn Mech, Fac Engn, HR-51000 Rijeka, Croatia
[2] Univ Bologna, Sch Engn & Architecture, Dept Civil Chem Environm & Mat Engn DICAM, I-40136 Bologna, Italy
[3] Univ Porto, Fac Engn, Dept Engn Mecan, P-4200465 Porto, Portugal
来源：
APPLIED SCIENCES-BASEL | 2017年 / 7卷 / 12期
关键词：
Functionally Graded Carbon Nanotubes; natural frequencies; Winkler-Pasternak elastic foundations; numerical analysis; Higher-order Shear Deformation Theories; NONLINEAR ELASTIC FOUNDATIONS; SHEAR DEFORMATION-THEORY; FIBRE-STRENGTHENED MATERIALS; LAMINATED COMPOSITE SHELLS; FUNCTIONALLY GRADED PLATES; DOUBLY-CURVED SHELLS; CYLINDRICAL-SHELLS; NATURAL FREQUENCIES; MECHANICAL PROPERTIES; DYNAMIC INSTABILITY;
D O I：
10.3390/app7121228
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This paper aims to investigate the effect of the Winkler-Pasternak elastic foundation on the natural frequencies of Carbon Nanotube (CNT)-reinforced laminated composite plates and shells. The micromechanics of reinforcing CNT particles are described by a two-parameter agglomeration model. CNTs are gradually distributed along the thickness direction according to various functionally graded laws. Elastic foundations are modeled according to the Winkler-Pasternak theory. The theoretical model considers several Higher-order Shear Deformation Theories (HSDTs) based on the so-called Carrera Unified Formulation (CUF). The theory behind CNTs is explained in detail. The theoretical model presented is solved numerically by means of the Generalized Differential Quadrature (GDQ) method. Several parametric studies are conducted, and their results are discussed.
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页数：55
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