The buckling behavior of perforated nanobeams on elastic foundations has become increasingly important, mainly due to their widespread use in nanostructures and nanotechnology systems. This study investigates the buckling behavior of perforated nanobeams resting on Winkler-Pasternak elastic foundations using Modified Couple Stress Theory (MCST) and the Finite Element Method (FEM). The analysis examines the effects of various parameters, including foundation elasticity, MCST internal length scale, perforation properties, and beam length, on critical buckling loads. Results indicate that increasing both Winkler and Pasternak foundation parameters enhances the critical buckling load, with the Pasternak parameter showing a more pronounced effect due to its incorporation of shear effects. The MCST internal length scale parameter significantly influences nano-beam stability, highlighting the importance of size effects at nanoscale dimensions. Higher filling ratios correlate directly with increased buckling resistance, while a greater number of holes reduces overall structural stiffness and decreases the critical buckling load. Beam length exhibits an inverse relationship with buckling strength; longer beams demonstrate lower critical buckling loads than shorter beams, regardless of the number of holes present.
Buckling Analysis Finite Element Method Modified Couple Stress Theory Perforated Nanobeam Winkler-Pasternak Foundation
Primary Language | English |
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Subjects | Numerical Modelization in Civil Engineering, Civil Engineering (Other) |
Journal Section | Research Article |
Authors | |
Publication Date | June 1, 2025 |
Submission Date | November 18, 2024 |
Acceptance Date | February 26, 2025 |
Published in Issue | Year 2025 Volume: 13 Issue: 2 |