Nonlocal integral thermoelasticity: A thermodynamic framework for functionally graded beams

被引：32
作者：
Barretta, Raffaele [1 ]
Canadija, Marko [2 ]
de Sciarra, Francesco Marotti [1 ]
机构：
[1] Univ Naples Federico II, Dept Struct Engn & Architecture, Via Claudio 21, I-80121 Naples, Italy
[2] Univ Rijeka, Fac Engn, Dept Engn Mech, Vukovarska 58, Rijeka 51000, Croatia
来源：
COMPOSITE STRUCTURES | 2019年 / 225卷
关键词：
Functionally graded materials; Bernoulli-Euler beam; Nonlocal thermoelasticity; Integral laws; Size effects; WALLED CARBON NANOTUBES; NONLINEAR VIBRATION ANALYSIS; STRESS-DRIVEN; NANO-BEAMS; BUCKLING TEMPERATURE; BOUNDARY-CONDITIONS; NANOBEAMS; BEHAVIOR; ELASTICITY; MICRO;
D O I：
10.1016/j.compstruct.2019.111104
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
An effective nonlocal integral formulation for functionally graded Bernoulli-Euler beams in nonisothermal environment is developed. Both thermal and mechanical loadings are accounted for. The proposed model, of stress-driven integral type, is shown to be governed by a thermodynamically consistent differential problem with proper constitutive boundary conditions. The new thermoelastic strategy is illustrated by investigating a set of examples. It is demonstrated that in nonisothermal statically indeterminate problems rather complex structural behaviours can appear and that both the shift of the neutral surface and nonlocality have a dominating influence at small-scales.
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页数：11
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