Thermal Buckling and Bending Analyses of Carbon Foam Beams Sandwiched by Composite Faces Under Axial Compression

Abstract

The bending and critical buckling loads of a sandwich beam structure subjected to thermal load and axial compression were simulated and temperature distribution across sandwich layers was investigated by finite element analysis and validated analytically. The sandwich structure was consisted of two face sheets and a core, carbon fiber and carbon foam were used as face sheet and core respectively for more efficient stiffness results. The analysis was repeated with different materials to reduce thermal strain and heat flux of sandwich beams. Applying both ends fixed as temperature boundary conditions, temperature induced stresses were observed, steady-state thermal analysis was performed, and conduction through sandwich layers along with their deformation nature were investigated based on the material properties of the combination of face sheets and core. The best material combination was found for the reduction of heat flux and thermal strain, and addition of aerogel material significantly reduced thermal stresses without adding weight to the sandwich structure.

Finite Element Analysis for Dynamic Response of Viscoelastic Sandwiched Structures Integrated With Aluminum Sheets

“…In engineering practice, sandwich structures have complex geometric shapes and boundary conditions thus, such problems cannot be effectively solved by the conventional analytical process, accordingly finite element (FE) approach is commonly used which may facilitate the computational complexity of such problem [9][10][11][12]. Arvin et al [13] developed four nodes VE sandwich beam element based on higher-order shear deformation theory to explore the steady-state and transient responses of a VE composite sandwich beam.…”

Smoke detector placement in compartments with honeycomb ceiling: A numerical study

“…In practical engineering applications, different types of beam structures are widely used, because they can optimize weight and change strength by changing the cross-sectional area and material properties. Uniform and non-uniform beams, sandwich composite structures, and honeycomb structures are increasingly used in many fields of engineering and practically always used as structural elements [1,2].…”

“…Hu and Wang [7] created a thermalmechanical analysis model to characterize thermal shock behaviors of auxetic honeycomb core ceramic sandwich structures. Safaei et al [2] investigated the bending and critical buckling loads of a sandwich beam structure subjected to thermal load and axial compression using ANSYS software. Numerical results of thermal stresses and buckling temperature of the sandwich beam were validated analytically.…”

Size‐dependent Levinson beam theory for thermal vibration of a nanobeam with deformable boundary conditions

“…These are the well-known Timoshenko, Reddy-Bickford, Euler-Bernoulli, Levinson beam theories, on the other hand, there are many theories based on various assumptions and frequently emphasized by researchers, including thin and thick plate theories in plates, similarly thin and thick theories in panels. Since it is important to have a good understanding of the behavior of these structural elements and materials, the studies [1][2][3][4][5][6][7][8] presented by researchers considering various effects are frequently encountered in the literature. In this study, the Levinson beam theory, which also takes into account the small size effect, is preferred.…”