Prof. Rosa Penna
University of Salerno, Italy
Title: Mechanical response of Functionally-Graded nanobeam
Abstarct: This study explores the mechanical behaviour 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 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.
This work was supported by the National Recovery and Resilience Plan (NRRP), Mission 4, Component 2, Investment 1.1, Call for tender No. 104 published on 2.2.2022 by the Italian Ministry of University and Research (MUR), funded by the European Union – NextGenerationEU – Project Titles “Intelligent Systems for Infrastructural Diagnosis in Smart Concrete (ISIDE)” – Grant No. 2022S88WAY - CUP: D53D23008820006. Additional, this research was also supported by the Italian Ministry of University and Research (MUR) through the PRIN 2020 Research Grant No. 2020EBLPLS, titled “Opportunities and Challenges of Nanotechnology in Advanced and Green Construction Materials.”
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