Size-Dependent Bending Response of Perforated Nanobeams on Winkler-Pasternak Foundation

International Journal Of Engineering & Applied Sciences, Год журнала: 2025, Номер 17(1), С. 1 - 16

Опубликована: Май 1, 2025

This study investigates the bending response of perforated nanobeams resting on Winkler-Pasternak elastic foundation (WPEF), using Eringen's theory nonlocal elasticity (ENET). The analysis examines how various parameters affect mechanical nanobeam, including parameter, parameters, filling ratio, and number holes. Results indicate that an increase in parameter produces larger transverse displacements compared to classical beam theory, while stiffness decreases due nanoscale effects. significantly influence behavior, with Pasternak model proving more effective than Winkler (WEF) reducing displacement. Analysis hole properties reveals higher ratios stiffness, holes nanobeam stiffness. These findings are crucial for optimizing design nanoelectromechanical systems other nanostructured devices where behavior affects performance.

Язык: Английский

Investigation of buckling behavior of carbon nanotube reinforced nanobeams according to nonlocal elasticity and elastic foundation effects

Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Год журнала: 2025, Номер 15(1), С. 105 - 121

Опубликована: Март 15, 2025

In this study, the buckling behavior of carbon nanotube (CNT) reinforced nanobeams on an elastic foundation is investigated using nonlocal elasticity theory and finite element method within framework Euler-Bernoulli beam theory. The effects CNT volume fraction, parameter, parameter length-to-thickness ratio critical load are analyzed. nanobeam modeled considering short long reinforcements, mechanical properties determined by rule mixtures. To determine loads nanobeams, stiffness matrices force vectors, including effects, derived based analyses carried out accordingly. results show that increasing fraction significantly increases load, suggesting CNTs play essential role in strengthening nanobeams. On other hand, negatively affects decreases strength nanobeam. However, effect negligible. positively resistance. This finding indicates plays important improving structural stability another indicating thin more prone to with ratio. Since above-mentioned four parameters were method, obtained will guide subsequent numerical modeling studies nano-sized beams.

Язык: Английский