On functionally graded Timoshenko nonisothermal nanobeams

被引:53
作者
Canadija, Marko [1 ]
Barretta, Raffaele [2 ]
de Sciarra, Francesco Marotti [2 ]
机构
[1] Univ Rijeka, Fac Engn, Dept Engn Mech, Rijeka 51000, Croatia
[2] Univ Naples Federico II, Dept Struct Engn & Architecture, I-80121 Naples, Italy
关键词
Timoshenko nanobeams; Nonlocal thermoelasticity; Carbon nanotubes; NONLINEAR FREE-VIBRATION; CYLINDRICAL-SHELLS; WAVE-PROPAGATION; CARBON NANOTUBE; GRADIENT MODEL; SURFACE; NANOCOMPOSITES; BEAM; TORSION;
D O I
10.1016/j.compstruct.2015.09.030
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The paper deals with the mechanics of nanobeams within nonisothermal environments. Mechanical behaviour is assumed to be time-independent and suitable for the statical beam deformation. The nanobeam mechanics is based on the Timoshenko kinematics, augmented by nonlocality effects as advocated by Eringen. Following a thermodynamic approach, a sound framework oriented toward anisotropic materials is developed. Such nanobeam model is especially suited for functionally graded materials. The proposed procedure is tested on two examples. The first example investigates mechanical behaviour in the more general way for the different temperature distributions, while the second one is oriented toward specific carbon nanotube Poly(methyl methacrylate) nanocomposite. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:286 / 296
页数:11
相关论文
共 35 条
[1]   Processing of styrene butadiene rubber-carbon black nanocomposites with gradation of crosslink density: Static and dynamic mechanical characterization [J].
Ahankari, S. S. ;
Kar, Kamal K. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 491 (1-2) :454-460
[2]   Temperature effects on the vibration characteristics of a functionally graded thick beam [J].
Alshorbagy, Amal E. .
AIN SHAMS ENGINEERING JOURNAL, 2013, 4 (03) :455-464
[3]   Functionally graded carbon nanofiber-phenolic nanocomposites for sudden temperature change applications [J].
Bafekrpour, Ehsan ;
Simon, George P. ;
Yang, Chunhui ;
Chipara, Mircea ;
Habsuda, Jana ;
Fox, Bronwyn .
POLYMER, 2013, 54 (15) :3940-3948
[4]   Fabrication and characterization of functionally graded synthetic graphite/phenolic nanocomposites [J].
Bafekrpour, Ehsan ;
Simon, George P. ;
Habsuda, Jana ;
Naebe, Minoo ;
Yang, Chunhui ;
Fox, Bronwyn .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 545 :123-131
[5]   Variational formulations for functionally graded nonlocal Bernoulli-Euler nanobeams [J].
Barretta, Raffaele ;
Feo, Luciano ;
Luciano, Raimondo ;
de Sciarra, Francesco Marotti .
COMPOSITE STRUCTURES, 2015, 129 :80-89
[6]   Torsion of functionally graded nonlocal viscoelastic circular nanobeams [J].
Barretta, Raffaele ;
Feo, Luciano ;
Luciano, Raimondo .
COMPOSITES PART B-ENGINEERING, 2015, 72 :217-222
[7]  
Canadija M, EUR J MEC A IN PRESS
[8]   THERMODYNAMICS WITH INTERNAL STATE VARIABLES [J].
COLEMAN, BD ;
GURTIN, ME .
JOURNAL OF CHEMICAL PHYSICS, 1967, 47 (02) :597-&
[9]   A gradient model for torsion of nanobeams [J].
de Sciarra, Francesco Marotti ;
Canadija, Marko ;
Barretta, Raffaele .
COMPTES RENDUS MECANIQUE, 2015, 343 (04) :289-300
[10]   A gradient model for Timoshenko nanobeams [J].
de Sciarra, Francesco Marotti ;
Barretta, Raffaele .
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2014, 62 :1-9