Modelling of Debond and Crack Propagation in Sandwich Structures Using Fracture and Damage Mechanics

C. Berggreen, Bo Cerup Simonsen, Rikard Toernqvist

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Skin-core de-bonding or core crack propagation will often be dominating mechanisms in the collapse modes of sandwich structures. This paper presents two different methods for prediction of crack propagation in a sandwich structure: a fracture mechanics approach, where a new mode-mix method is presented, and a local damage mechanics approach. The paper presents a real-life application example, where the superstructure in a vessel pulls the skin off the sandwich deck. The calculations show almost unstable crack growth initially followed by a stabilization, and a nearly linear relation between lifting and crack length. A remarkably good agreement is found between the results of the fracture and damage mechanics approaches.
Original languageEnglish
Title of host publicationProceedings of 6th International Conference on Sandwich Structures
Place of PublicationBoca Raton
PublisherCRC Press
Publication date2003
Pages682-693
Publication statusPublished - 2003
Event6th International Conference on Sandwich Structures - Ft.Lauderdale, FL, United States
Duration: 31 Mar 20032 Apr 2003
Conference number: 6

Conference

Conference6th International Conference on Sandwich Structures
Number6
CountryUnited States
CityFt.Lauderdale, FL
Period31/03/200302/04/2003

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