Concept for morphing airfoil with zero torsional stiffness

Stephen Daynes; Xavier Lachenal; Paul M. Weaver

doi:10.1016/j.tws.2015.04.017

Concept for morphing airfoil with zero torsional stiffness

Stephen Daynes, Xavier Lachenal, Paul M. Weaver^*

^*Corresponding author for this work

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

30 Citations (Scopus)

Abstract

A morphing wing structure is presented which is designed to have zero torsional stiffness to minimise actuation requirements. The concept consists of carbon fibre reinforced plastic strips which are initially curved prior to being flattened and assembled into a grid-like structure in a heightened state of elastic strain energy. Varying the initial curvature of the strips, material properties and the assembled geometry enables the torsional stiffness to be tailored. A state of zero torsional stiffness can be obtained when there is a balance between the changes in strain energy associated with bending and twist deformations.

Original language	English
Pages (from-to)	129-134
Number of pages	6
Journal	Thin-Walled Structures
Volume	94
DOIs	https://doi.org/10.1016/j.tws.2015.04.017
Publication status	Published - 1 Sept 2015

Keywords

Composites
Morphing
Multistability
Nonlinear structures
Prestress
Zero-stiffness

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title = "Concept for morphing airfoil with zero torsional stiffness",

abstract = "A morphing wing structure is presented which is designed to have zero torsional stiffness to minimise actuation requirements. The concept consists of carbon fibre reinforced plastic strips which are initially curved prior to being flattened and assembled into a grid-like structure in a heightened state of elastic strain energy. Varying the initial curvature of the strips, material properties and the assembled geometry enables the torsional stiffness to be tailored. A state of zero torsional stiffness can be obtained when there is a balance between the changes in strain energy associated with bending and twist deformations.",

keywords = "Composites, Morphing, Multistability, Nonlinear structures, Prestress, Zero-stiffness",

author = "Stephen Daynes and Xavier Lachenal and Weaver, \{Paul M.\}",

year = "2015",

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language = "English",

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T1 - Concept for morphing airfoil with zero torsional stiffness

AU - Daynes, Stephen

AU - Lachenal, Xavier

AU - Weaver, Paul M.

PY - 2015/9/1

Y1 - 2015/9/1

N2 - A morphing wing structure is presented which is designed to have zero torsional stiffness to minimise actuation requirements. The concept consists of carbon fibre reinforced plastic strips which are initially curved prior to being flattened and assembled into a grid-like structure in a heightened state of elastic strain energy. Varying the initial curvature of the strips, material properties and the assembled geometry enables the torsional stiffness to be tailored. A state of zero torsional stiffness can be obtained when there is a balance between the changes in strain energy associated with bending and twist deformations.

AB - A morphing wing structure is presented which is designed to have zero torsional stiffness to minimise actuation requirements. The concept consists of carbon fibre reinforced plastic strips which are initially curved prior to being flattened and assembled into a grid-like structure in a heightened state of elastic strain energy. Varying the initial curvature of the strips, material properties and the assembled geometry enables the torsional stiffness to be tailored. A state of zero torsional stiffness can be obtained when there is a balance between the changes in strain energy associated with bending and twist deformations.

KW - Composites

KW - Morphing

KW - Multistability

KW - Nonlinear structures

KW - Prestress

KW - Zero-stiffness

UR - https://www.scopus.com/pages/publications/84929088861

U2 - 10.1016/j.tws.2015.04.017

DO - 10.1016/j.tws.2015.04.017

M3 - Article (Academic Journal)

AN - SCOPUS:84929088861

SN - 0263-8231

VL - 94

SP - 129

EP - 134

JO - Thin-Walled Structures

JF - Thin-Walled Structures

ER -

Concept for morphing airfoil with zero torsional stiffness

Abstract

Keywords

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