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On thermo-mechanical bending response of porous functionally graded sandwich plates via a simple integral plate model

Mahmoud S. R., Ghandourah E., Algarni Ali, Balubaid Mohammed, Tounsi Abdelouahed, Bourada Fouad

Archives of Civil and Mechanical Engineering

2022

Vol. 22, no. 4

art. no. e186, 2022

This work investigates the thermo-mechanical bending response of porous functionally graded sandwich plates which can be considered for military and civil use. Integral four-unknown shear deformation theory is proposed to present the kinematic of the structure. The differential equilibrium equations are determined via the principle of virtual work and solved with Navier’s procedure. The influence of porosity parameters is examined to explain the structural integrity of such structures that can be utilized in military and civil industries. In addition, a detailed parametric investigation is performed to highlight the impact of the “volume fraction variation”, “geometrical ratios” and “thermal load” on thermo-mechanical bending response of the porous functionally graded sandwich plates.

Static stability analysis of carbon nanotube reinforced polymeric composite doubly curved micro-shell panels

Huang Yong, Karami Behrouz, Shahsavari Davood, Tounsi Abdelouahed

Archives of Civil and Mechanical Engineering

2021

Vol. 21, no. 4

39--53

The current work develops a size-dependent model to provide a comprehensive analysis of static stability in doubly curved micro-panels resting on an elastic foundation. The doubly curved panel is made of advanced composites which reinforced with carbon-based materials. A seven-unknown shear deformation theory in curvilinear coordinate is combined with a non-classical approach to obtain a suitable model to get an accurate result for mechanical performance of micro-size shells. To perform this aim, a virtual work of Hamilton statement is developed and then an analytical technique on the basis of double-Fourier series is implemented for the microshell with fully simply supported conditions in edges. Results show that, CNTs reinforced composite curved shells exhibit a hardening response under buckling. It is also showed that the greatest critical buckling load of the microshell is observed for the shell with spherical panel followed by elliptical, cylindrical, and hyperbolic panels, respectively. Moreover, change of CNTs weight fraction can significantly alter the static stability characteristics of CNTs reinforced composite curved size-dependent shells.