Characterization of ply mixing rules for non-symmetric forms of fully orthotropic laminates

York, C.B. (2007) Characterization of ply mixing rules for non-symmetric forms of fully orthotropic laminates. In: 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Honolulu, Hawaii, 23-26 Apr 2007, ISBN 9781563478925 (doi: 10.2514/6.2007-2083)

Abstract

Stacking sequence listings are presented for fully orthotropic angle-ply laminates, with up to 21 plies, together with rules for mixing these sequences to form laminates containing any number of plies. The mixing rules are demonstrated through an abridged set of sequences, which are characterized in terms of angle- and cross-ply sub-sequence symmetries. The abridged set of sequences is derived from a new definitive list that supersedes previously published listings. Stacking sequences are presented together with dimensionless parameters from which the bending stiffness terms are readily calculated and an assessment of the bending stiffness efficiency made for angle- and cross-ply sub-sequences. Expressions relating the dimensionless parameters to the well-known lamination parameters are also given, together with graphical representations of feasible domains for all sub-sequence symmetries contained in the definitive list. Feasible domains for extensionally isotropic and fully isotropic laminates are also presented as important sub-sets of fully orthotropic laminates. Finally, examples are given for tapered laminates with fully orthotropic properties, derived from compatible sequences in the definite list.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: York, Dr Christopher
• Authors: York, C.B.
• Subjects: T Technology > T Technology (General)
• College/School: College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity; University Centres > Glasgow Materials Research Initiative
• Publisher: American Institute of Aeronautics and Astronautics
• ISBN: 9781563478925
• Copyright Holders: Copyright © 2007 The Author
• First Published: First published in the Proceedings of the 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
• Publisher Policy: Reproduced with permission of the author