Generalized quasi-three dimensional analysis of composite laminates with unsymmetrically located free-edge delaminations

Kazuo Kunoo; Nobuhide Uda; Kousei Ono; Kaoru Onohara

Generalized quasi-three dimensional analysis of composite laminates with unsymmetrically located free-edge delaminations

Kazuo Kunoo, Nobuhide Uda, Kousei Ono, Kaoru Onohara

Aerospace Structures and Structural Dynamics Laboratory

Research output: Contribution to journal › Conference article › peer-review

4 Citations (Scopus)

Abstract

This paper presents a generalized quasi-three dimensional (GQ3D) analysis of composite laminates with delamination. Two techniques are developed for the analysis: one is a generalized quasi-three dimensional finite element method (GQ3D-FEM), and the other is a generalized quasi-three dimensional classical laminated plate theory (GQ3D-CLT). The GQ3D analyses are performed on [30₂/-30₂/90[_S laminates subjected to uniaxial extension, with free-edge delaminations located unsymmetrically with respect to the laminate midplane. The results obtained by the two techniques reveal bending deformations and twisting deformations of the laminates, and increasing energy release rates as the delamination growth. The differences of the generalized quasi-three dimensional analysis from the quasi-three dimensional analysis are also clarified.

Original language	English
Pages (from-to)	137-146
Number of pages	10
Journal	Theoretical and Applied Mechanics
Volume	41
Publication status	Published - Dec 1 1992
Event	Proceedings of the 41st Japan Congress on Applied Mechanics _ NCTAM-41 - Tokyo, Jpn Duration: Jan 28 1992 → Jan 30 1992

All Science Journal Classification (ASJC) codes

Mechanics of Materials

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title = "Generalized quasi-three dimensional analysis of composite laminates with unsymmetrically located free-edge delaminations",

abstract = "This paper presents a generalized quasi-three dimensional (GQ3D) analysis of composite laminates with delamination. Two techniques are developed for the analysis: one is a generalized quasi-three dimensional finite element method (GQ3D-FEM), and the other is a generalized quasi-three dimensional classical laminated plate theory (GQ3D-CLT). The GQ3D analyses are performed on [302/-302/90[S laminates subjected to uniaxial extension, with free-edge delaminations located unsymmetrically with respect to the laminate midplane. The results obtained by the two techniques reveal bending deformations and twisting deformations of the laminates, and increasing energy release rates as the delamination growth. The differences of the generalized quasi-three dimensional analysis from the quasi-three dimensional analysis are also clarified.",

author = "Kazuo Kunoo and Nobuhide Uda and Kousei Ono and Kaoru Onohara",

year = "1992",

month = dec,

day = "1",

language = "English",

volume = "41",

pages = "137--146",

journal = "Theoretical and Applied Mechanics",

issn = "0285-6042",

publisher = "University of Tokyo Press",

note = "Proceedings of the 41st Japan Congress on Applied Mechanics _ NCTAM-41 ; Conference date: 28-01-1992 Through 30-01-1992",

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TY - JOUR

T1 - Generalized quasi-three dimensional analysis of composite laminates with unsymmetrically located free-edge delaminations

AU - Kunoo, Kazuo

AU - Uda, Nobuhide

AU - Ono, Kousei

AU - Onohara, Kaoru

PY - 1992/12/1

Y1 - 1992/12/1

N2 - This paper presents a generalized quasi-three dimensional (GQ3D) analysis of composite laminates with delamination. Two techniques are developed for the analysis: one is a generalized quasi-three dimensional finite element method (GQ3D-FEM), and the other is a generalized quasi-three dimensional classical laminated plate theory (GQ3D-CLT). The GQ3D analyses are performed on [302/-302/90[S laminates subjected to uniaxial extension, with free-edge delaminations located unsymmetrically with respect to the laminate midplane. The results obtained by the two techniques reveal bending deformations and twisting deformations of the laminates, and increasing energy release rates as the delamination growth. The differences of the generalized quasi-three dimensional analysis from the quasi-three dimensional analysis are also clarified.

AB - This paper presents a generalized quasi-three dimensional (GQ3D) analysis of composite laminates with delamination. Two techniques are developed for the analysis: one is a generalized quasi-three dimensional finite element method (GQ3D-FEM), and the other is a generalized quasi-three dimensional classical laminated plate theory (GQ3D-CLT). The GQ3D analyses are performed on [302/-302/90[S laminates subjected to uniaxial extension, with free-edge delaminations located unsymmetrically with respect to the laminate midplane. The results obtained by the two techniques reveal bending deformations and twisting deformations of the laminates, and increasing energy release rates as the delamination growth. The differences of the generalized quasi-three dimensional analysis from the quasi-three dimensional analysis are also clarified.

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M3 - Conference article

AN - SCOPUS:0026997808

VL - 41

SP - 137

EP - 146

JO - Theoretical and Applied Mechanics

JF - Theoretical and Applied Mechanics

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T2 - Proceedings of the 41st Japan Congress on Applied Mechanics _ NCTAM-41

Y2 - 28 January 1992 through 30 January 1992

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