Two-Scale Computational Approach Using Strain Gradient Theory at Microlevel (CROSBI ID 237547)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Lesičar, Tomislav ; Tonković, Zdenko ; Sorić, Jurica
engleski
Two-Scale Computational Approach Using Strain Gradient Theory at Microlevel
Realistic description of heterogeneous material behavior demands more accurate modeling at macroscopic and microscopic scales. In this frame, the multiscale techniques employing homogenization scheme offer several solutions. Most recently developed the two-scale scheme employing second-order homogenization requires the nonlocal theory at the macrolevel, while the classical local continuum theory is kept at the microlevel. In this paper, a new second-order computational homogenization scheme is proposed employing the higher-order theory at both macro- and microlevel. Discretization is performed by means of the C1 finite element developed using the strain gradient theory. The new gradient boundary conditions employed on representative volume element (RVE) are derived. The relation between the internal length scale parameter and the RVE size has been found. The new procedure is tested on a benchmark example, where the results have been compared to the solutions obtained by the usual second-order homogenization using the local concept on the RVE.
Nonlocal-nonlocal second-order computational homogenization, C1 finite element, Gradient boundary conditions, Aifantis strain gradient theory
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
126
2017.
67-68
objavljeno
0020-7403
10.1016/j.ijmecsci.2017.02.017