The determination and enhancement of compliant modes for actuation in structural assemblies
File(s)
Accepted version
Author(s)
Bird, J
Santer, M
morrison, J
Type
Journal Article
Abstract
Linear algebra methods for determining modes of kinematic and static indeter-
minacy in jointed frames are extended to reveal modes of compliance in oth-
erwise rigid assemblies. These modes are extracted from a structural model,
based on nite elements, via a singular value decomposition and yield the ways
in which a structure can be most easily deformed. This modal approach also
allows for the formulation of a reduced-order structural model, whereby relevant
modes are selected and used as the basis for the optimisation of a complaint
structure. The method detailed is shown to be a useful design tool, demon-
strated by its application to a structure based on the Kagome lattice geometry.
For certain frameworks, rst order e ects produce tightening under actuation.
As a result, a scheme to adjust the modes to take nonlinear e ects into account
is also given.
minacy in jointed frames are extended to reveal modes of compliance in oth-
erwise rigid assemblies. These modes are extracted from a structural model,
based on nite elements, via a singular value decomposition and yield the ways
in which a structure can be most easily deformed. This modal approach also
allows for the formulation of a reduced-order structural model, whereby relevant
modes are selected and used as the basis for the optimisation of a complaint
structure. The method detailed is shown to be a useful design tool, demon-
strated by its application to a structure based on the Kagome lattice geometry.
For certain frameworks, rst order e ects produce tightening under actuation.
As a result, a scheme to adjust the modes to take nonlinear e ects into account
is also given.
Date Issued
2016-11-18
Date Acceptance
2016-11-02
Citation
International Journal of Solids and Structures, 2016, 106-107, pp.264-273
ISSN
0020-7683
Publisher
Elsevier
Start Page
264
End Page
273
Journal / Book Title
International Journal of Solids and Structures
Volume
106-107
Copyright Statement
© 2016 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Airbus Group Ltd
Grant Number
PO: 8000063097/U01
Subjects
Science & Technology
Technology
Mechanics
Adaptive structures
Kagome lattice
SVD
Mechanical Engineering & Transports
09 Engineering
Publication Status
Published