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

C. Berggreen; Bo Cerup Simonsen; Rikard Toernqvist

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 proceeding › Article in proceedings › Research › peer-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 language	English
Title of host publication	Proceedings of 6th International Conference on Sandwich Structures
Place of Publication	Boca Raton
Publisher	CRC Press
Publication date	2003
Pages	682-693
Publication status	Published - 2003
Event	6th International Conference on Sandwich Structures - Ft.Lauderdale, FL, United States Duration: 31 Mar 2003 → 2 Apr 2003 Conference number: 6

Conference

Conference	6th International Conference on Sandwich Structures
Number	6
Country/Territory	United States
City	Ft.Lauderdale, FL
Period	31/03/2003 → 02/04/2003

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title = "Modelling of Debond and Crack Propagation in Sandwich Structures Using Fracture and Damage Mechanics",

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.",

author = "C. Berggreen and Simonsen, {Bo Cerup} and Rikard Toernqvist",

year = "2003",

language = "English",

pages = "682--693",

booktitle = "Proceedings of 6th International Conference on Sandwich Structures",

publisher = "CRC Press",

note = "6th International Conference on Sandwich Structures, ICSS-6 ; Conference date: 31-03-2003 Through 02-04-2003",

}

Modelling of Debond and Crack Propagation in Sandwich Structures Using Fracture and Damage Mechanics. / Berggreen, C.; Simonsen, Bo Cerup; Toernqvist, Rikard.
Proceedings of 6th International Conference on Sandwich Structures. Boca Raton: CRC Press, 2003. p. 682-693.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Modelling of Debond and Crack Propagation in Sandwich Structures Using Fracture and Damage Mechanics

AU - Berggreen, C.

AU - Simonsen, Bo Cerup

AU - Toernqvist, Rikard

N1 - Conference code: 6

PY - 2003

Y1 - 2003

N2 - 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.

AB - 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.

M3 - Article in proceedings

SP - 682

EP - 693

BT - Proceedings of 6th International Conference on Sandwich Structures

PB - CRC Press

CY - Boca Raton

T2 - 6th International Conference on Sandwich Structures

Y2 - 31 March 2003 through 2 April 2003

ER -

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

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