Indexed by:期刊论文

Date of Publication:2018-01-01

Journal:MECHANICS OF ADVANCED MATERIALS AND STRUCTURES

Included Journals:SCIE

Volume:25

Issue:11

Page Number:901-916

ISSN No.:1537-6494

Key Words:Composite grid-stiffened structures; delamination deficiencies; finite element method (FEM); cohesive element; delamination growth; compression properties

Abstract:This article provides a systematic approach to accurately predict the effects of delamination deficiencies on compressive properties of composite grid-stiffened structures. The deformation of the stiffener and the skin is investigated during a mechanical test. Cohesive elements in the finite element method were employed to calculate the ultimate load-carrying capacity. The delamination deficiencies in the interface between the skin and the stiffener have a significant effect upon its ultimate load-carrying capability compared with the delamination deficiencies in the skin and in the stiffener.