Progressive failure analysis of composite laminates loaded in compression

Abstract

U ovom radu sprovedena je analiza progresivnog loma pločastih kompozitnih laminata, opterećenih na pritisak. Hashin-ov kriterijum je korišćen prilikom određivanja inicijacije loma laminata, dok je razvoj oštećenja analiziran primenom modela razmazane pukotine. U cilju poboljšanja efikasnosti proračuna, izabrani model oštećenja je implementiran u numerički model zasnovan na Redijevoj slojevitoj teoriji ploča. Prilikom validacije razvijenog algoritamskog modela, dobijeni rezultati su upoređeni sa numeričkim rezultatima iz literature i dobijena su odlična poklapanja.

This paper deals with the progressive failure analysis (PFA) of plate-like composite laminates loaded in compression. The Hashin failure criterion was used to detect failure initiation, while damage evaluation behaviour was calculated using the smeared crack band (SCB) damage model. SCB damage model have been incorporated into the Full-Layerwise Theory (FLWT) framework to increase the computational efficiency of the PFA. To verify the effectiveness of the FLWT-SCB prediction model, the obtained results were compared against the benchmark data from the literature and excellent agreement has been obtained.