Naslov
Application of asymptotic analysis to the two-scale modeling of small defects in mechanical structures

Autori
Marenić, Eduard ; Brancherie, Delphine ; Bonnet, Marc

Izvornik
International journal of solids and structures (0020-7683) 128 (2017); 199-209

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
asymptotic analysis ; elastic moment tensor ; defect ; inhomogeneity

Sažetak
This work aims at designing a numerical strategy towards assessing the nocivity of a small defect in terms of its size and position in a structure, at low computational cost, using only a mesh of the defect-free reference structure. The modification of the fields induced by the presence of a small defect is taken into account by using asymptotic corrections of displacements or stresses. This approach helps determining the potential criticality of defects by considering trial micro-defects with varying positions, sizes and mechanical properties, taking advantage of the fact that parametric studies on defect characteristics become feasible at virtually no extra computational cost. The proposed treatment is validated and demonstrated on two numerical examples involving 2D elastic configurations.

Izvorni jezik
Engleski

Znanstvena područja
Matematika, Građevinarstvo, Strojarstvo

POVEZANOST RADA