Thermal effects on the instabilities of porous FGM box beams

被引：41

作者：

Ziane, Noureddine ^{[1
]}

Meftah, Sid Ahmed ^{[1
]}

Ruta, Giuseppe ^{[2
]}

Tounsi, Abdelouahed ^{[3
]}

机构：

[1] Univ Djillali Liabes Sidi Bel Abbes, Lab Struct & Mat Avances Genie Civil & Travaux Pu, Sidi Bel Abbes, Algeria

[2] Univ Roma La Sapienza, Fac Civil & Ind Engn, Dept Struct & Geotech Engn, Rome, Italy

[3] Univ Djillali Liabes Sidi Bel Abbes, Lab Mat & Hydrol, Sidi Bel Abbes, Algeria

来源：

ENGINEERING STRUCTURES | 2017年 / 134卷

关键词：

Thermal buckling; Lateral buckling; Box beam; FGM; Porosity; VIBRATION ANALYSIS; BUCKLING ANALYSIS; THIN; PLATES;

D O I：

10.1016/j.engstruct.2016.12.039

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

An analytical method to predict the thermal buckling of simply supported and clamped-clamped FGM box beams is presented in this paper. By means of Galerlcin's method, a new expression of the critical moment inducing lateral buckling for simply supported beams under thermo-mechanical loads is established. The beam thermo-mechanical properties are graded along the wall thickness according to a power law of the porous volume fraction. The critical temperature gradients given by the present method are compared to those provided by the commercial FEM code Abaqus, and the difference among the results is quite small. To investigate the effects of temperature and porosity on the instabilities of beams, some numerical examples are presented. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：150 / 158

页数：9

共 20 条

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