Identifying optimal rotating pitch angles in composites with Bouligand structure

Wenting Ouyang; Bowen Gong; Huan Wang; Fabrizio L Scarpa; Bo Su; Hua-Xin Peng

doi:10.1016/j.coco.2020.100602

Identifying optimal rotating pitch angles in composites with Bouligand structure

Wenting Ouyang, Bowen Gong, Huan Wang^*, Fabrizio L Scarpa, Bo Su, Hua-Xin Peng^*

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

45 Citations (Scopus)

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Abstract

We present a theoretical analysis to relate the rotation pitch angle to the mechanical performance (interlaminar shear property in this case) of laminas mimicking the Bouligand architecture. For a given laminate, there exists an optimal pitch angle which yields the lowest shear stress. Theoretical models are compared against experimental tests carried out on 32-layer helicoidal carbon fibre laminates with pitch angles of 6°, 9.1°, 12°, 25.7° where the 9.1° is the predicted optimal angle. The results show that this particular architecture with a pitch angle of 9.1° indeed attains the highest load-bearing capability and delays any catastrophic delamination. This provides a fundamental basis to the design of helicoidal structures mimicking the Bouligand architecture.

Original language	English
Article number	100602
Number of pages	5
Journal	Composites Communications
Volume	23
Early online date	26 Dec 2020
DOIs	https://doi.org/10.1016/j.coco.2020.100602
Publication status	Published - 1 Feb 2021

Bibliographical note

Funding Information:
HXP, FS and BS acknowledge the support of ZJU's Overseas Academician Joint Lab for Advanced Composite Materials and Structures. HXP acknowledges the financial support by National Natural Science Foundation of China [Grant No. 51731009 ] and the Fundamental Research Fund for Central University .

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

Bouligand structure
Composites
Helicoidal laminates
Interlaminar shear

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Accepted author manuscript, 1.47 MBLicence: CC BY-NC-ND

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title = "Identifying optimal rotating pitch angles in composites with Bouligand structure",

abstract = "We present a theoretical analysis to relate the rotation pitch angle to the mechanical performance (interlaminar shear property in this case) of laminas mimicking the Bouligand architecture. For a given laminate, there exists an optimal pitch angle which yields the lowest shear stress. Theoretical models are compared against experimental tests carried out on 32-layer helicoidal carbon fibre laminates with pitch angles of 6°, 9.1°, 12°, 25.7° where the 9.1° is the predicted optimal angle. The results show that this particular architecture with a pitch angle of 9.1° indeed attains the highest load-bearing capability and delays any catastrophic delamination. This provides a fundamental basis to the design of helicoidal structures mimicking the Bouligand architecture.",

keywords = "Bouligand structure, Composites, Helicoidal laminates, Interlaminar shear",

author = "Wenting Ouyang and Bowen Gong and Huan Wang and Scarpa, {Fabrizio L} and Bo Su and Hua-Xin Peng",

note = "Funding Information: HXP, FS and BS acknowledge the support of ZJU's Overseas Academician Joint Lab for Advanced Composite Materials and Structures. HXP acknowledges the financial support by National Natural Science Foundation of China [Grant No. 51731009 ] and the Fundamental Research Fund for Central University . Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2021",

month = feb,

day = "1",

doi = "10.1016/j.coco.2020.100602",

language = "English",

volume = "23",

journal = "Composites Communications",

issn = "2452-2139",

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TY - JOUR

T1 - Identifying optimal rotating pitch angles in composites with Bouligand structure

AU - Ouyang, Wenting

AU - Gong, Bowen

AU - Wang, Huan

AU - Scarpa, Fabrizio L

AU - Su, Bo

AU - Peng, Hua-Xin

N1 - Funding Information: HXP, FS and BS acknowledge the support of ZJU's Overseas Academician Joint Lab for Advanced Composite Materials and Structures. HXP acknowledges the financial support by National Natural Science Foundation of China [Grant No. 51731009 ] and the Fundamental Research Fund for Central University . Publisher Copyright: © 2020 Elsevier Ltd

PY - 2021/2/1

Y1 - 2021/2/1

N2 - We present a theoretical analysis to relate the rotation pitch angle to the mechanical performance (interlaminar shear property in this case) of laminas mimicking the Bouligand architecture. For a given laminate, there exists an optimal pitch angle which yields the lowest shear stress. Theoretical models are compared against experimental tests carried out on 32-layer helicoidal carbon fibre laminates with pitch angles of 6°, 9.1°, 12°, 25.7° where the 9.1° is the predicted optimal angle. The results show that this particular architecture with a pitch angle of 9.1° indeed attains the highest load-bearing capability and delays any catastrophic delamination. This provides a fundamental basis to the design of helicoidal structures mimicking the Bouligand architecture.

AB - We present a theoretical analysis to relate the rotation pitch angle to the mechanical performance (interlaminar shear property in this case) of laminas mimicking the Bouligand architecture. For a given laminate, there exists an optimal pitch angle which yields the lowest shear stress. Theoretical models are compared against experimental tests carried out on 32-layer helicoidal carbon fibre laminates with pitch angles of 6°, 9.1°, 12°, 25.7° where the 9.1° is the predicted optimal angle. The results show that this particular architecture with a pitch angle of 9.1° indeed attains the highest load-bearing capability and delays any catastrophic delamination. This provides a fundamental basis to the design of helicoidal structures mimicking the Bouligand architecture.

KW - Bouligand structure

KW - Composites

KW - Helicoidal laminates

KW - Interlaminar shear

U2 - 10.1016/j.coco.2020.100602

DO - 10.1016/j.coco.2020.100602

M3 - Article (Academic Journal)

SN - 2452-2139

VL - 23

JO - Composites Communications

JF - Composites Communications

M1 - 100602

ER -

Identifying optimal rotating pitch angles in composites with Bouligand structure

Abstract

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Keywords

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