Prof. Rosa Penna
University of Salerno, Italy
Title: Mechanical response of Functionally-Graded nanobeam
Abstarct: This study explores the mechanical behavior of functionally graded nanobeams, employing the innovative Surface-Stress Driven Model to simultaneously address the nonlocality and surface effects that are distinctive to nanostructures. Functionally graded materials (FGMs) exhibit variations in composition and structure throughout their bulk, significantly impacting their mechanical properties. The analysis involves deriving the governing equations through the application of Hamilton's principle. The research incorporates the Surface-Stress Driven Model to critically examine the influence of surface stresses and nonlocal elasticity, both of which are pivotal at the nanoscale. Parameters such as the material grading index, nanobeam thickness, boundary conditions, types of loading, and cross-sectional geometry are methodically examined. Findings indicate that material grading substantially enhances stiffness and load-bearing capacity.
Moreover, the integration of surface and nonlocal effects offers a more precise depiction of stress distribution, nanobeam deflection and the dynamic response. These insights are essential for the design and optimization of nanobeams in applications within nano- and micro-electromechanical systems (NEMS and MEMS), aerospace, and other sectors that demand high-performance materials.
Bio: To be announced soon