An experimental and numerical analysis for the post-buckling behavior of composite shear webs

Author(s)

Arbelo, Mariano A. ^[1] ; de Almeida, Sergio Frascino M. ^[1] ; Donadon, Mauricio V. ^[1]

Affiliation

^[1] Inst Tecnol Aeronaut ITA, CTA ITA IEM, BR-12228900 Sao Jose Dos Campos, SP - Brazil

• Document type: Journal article
• Source: COMPOSITE STRUCTURES; v. 93, n. 2, p. 465-473, JAN 2011.
• Web of Science Citations: 7

Abstract

This paper presents a detailed experimental and numerical investigation on the structural behavior of stiffened composite panels subjected to in-plane shear loads The experimental work includes the development of a test device for post-buckling analyses of laminated panels subjected to shear loads The panels out-of-plane displacement field in the post-buckling regime was experimentally characterized using a non-contact 3-D optical device A test procedure was proposed to obtain reliable and reproducible results The following parameters were established geometry and instrumentation of the specimens test mechanisms, data acquisition procedures and analysis procedures for test data The numerical objective of this work is to Implement a modeling methodology for analysis of composite stiffened panels using finite elements The proposed methodology takes into account large displacements and material nonlinearity effects by using a damage mechanics based progressive failure model Preliminary results for tested specimens with the proposed configuration indicate that the stiffened composite shear webs have significant post-buckling strength (C) 2010 Elsevier Ltd All rights reserved (AU)

• FAPESP's process: 08/05345-8 - Development of design procedures for reinforced composite panels for aeronautical structures
• Grantee: Mariano Andrés Arbelo
• Support Opportunities: Scholarships in Brazil - Doctorate