Zobrazeno 1 - 10
of 87
pro vyhledávání: '"de Sciarra, Francesco Marotti"'
Autor:
Barretta, Raffaele, Čanađija, Marko, de Sciarra, Francesco Marotti, Skoblar, Ante, Žigulić, Roberto
Publikováno v:
Mathematical Methods in the Applied Sciences, February 2021
In this article, eigenfrequencies of nano-beams under axial loads are assessed by making recourse to the well-posed stress-driven nonlocal model (SDM) and strain-driven two-phase local/nonlocal formulation (NstrainG) of elasticity and Bernoulli-Euler
Externí odkaz:
http://arxiv.org/abs/2107.12752
Autor:
Vaccaro, Marzia Sara, Pinnola, Francesco Paolo, de Sciarra, Francesco Marotti, Barretta, Raffaele
Publikováno v:
European Journal of Mechanics - A/Solids 89, August-October 2021, 104315
In this paper, the bending behaviour of small-scale Bernoulli-Euler beams is investigated by Eringen's two-phase local/nonlocal theory of elasticity. Bending moments are expressed in terms of elastic curvatures by a convex combination of local and no
Externí odkaz:
http://arxiv.org/abs/2107.12731
Autor:
Vaccaro, Marzia Sara, Pinnola, Francesco Paolo, de Sciarra, Francesco Marotti, Canadija, Marko, Barretta, Raffaele
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems 235(1-2), February 2021, 52-63
In this research, the size-dependent static behaviour of elastic curved stubby beams is investigated by Timoshenko kinematics. Stress-driven two-phase integral elasticity is adopted to model size effects which soften or stiffen classical local respon
Externí odkaz:
http://arxiv.org/abs/2107.12733
Autor:
Russillo, Andrea Francesco, Failla, Giuseppe, Alotta, Gioacchino, de Sciarra, Francesco Marotti, Barretta, Raffaele
Publikováno v:
International Journal of Engineering Science 160, March 2021, 103433
In this paper, size-dependent dynamic responses of small-size frames are modelled by stress-driven nonlocal elasticity and assessed by a consistent finite-element methodology. Starting from uncoupled axial and bending differential equations, the exac
Externí odkaz:
http://arxiv.org/abs/2107.12728
Autor:
Pinnola, Francesco Paolo, Vaccaro, Marzia Sara, Barretta, Raffaele, de Sciarra, Francesco Marotti
Stochastic flexural vibrations of small-scale Bernoulli-Euler beams with external damping are investigated by stress-driven nonlocal mechanics. Damping effects are simulated considering viscous interactions between beam and surrounding environment. L
Externí odkaz:
http://arxiv.org/abs/2009.09184
Publikováno v:
International Journal of Engineering Science 144, November 2019, 103140
Curved beams are basic structural components of Nano-Electro-Mechanical-Sistems (NEMS) whose design requires appropriate modelling of scale effects. In the present paper, the size-dependent static behaviour of curved elastic nano-beams is investigate
Externí odkaz:
http://arxiv.org/abs/2009.09188
Autor:
Barretta, Raffaele, Faghidian, S. Ali, de Sciarra, Francesco Marotti, Pinnola, Francesco Paolo
Publikováno v:
Mechanics of Advanced Materials and Structures, DOI: 10.1080/15376494.2019.1683660
Carbon nanotubes (CNTs) are principal constituents of nanocomposites and nano-systems. CNT size-dependent response assessment is therefore a topic of current interest in Mechanics of Advanced Materials and Structures. CNTs are modeled here by a varia
Externí odkaz:
http://arxiv.org/abs/2009.08729
Publikováno v:
Continuum Mechanics and Thermodynamics 32, 1311-1323 (2020)
Thick rods are employed in Nanotechnology to build modern electro mechanical systems. Design and optimization of such structures can be carried out by nonlocal continuum mechanics which is computationally convenient when compared to atomistic strateg
Externí odkaz:
http://arxiv.org/abs/2009.08744
Publikováno v:
International Journal of Engineering Science, 149, April 2020, 103220
The variational static formulation contributed in [International Journal of Engineering Science 143, 73-91 (2019)] is generalized in the present paper to model axial and flexural dynamic behaviors of elastic nano-beams by nonlocal strain and stress g
Externí odkaz:
http://arxiv.org/abs/2009.08738
Publikováno v:
International Journal of Engineering Science, 155, October 2020, 103364
In this paper, the mechanical behavior of multilayered small-scale beams in nonisothermal environment is investigated. Scale phenomena are modeled by means of the mathematically well-posed and experimentally consistent stress-driven integral formulat
Externí odkaz:
http://arxiv.org/abs/2008.13433