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Blended Composite Optimization combining Stacking Sequence Tables and a Modified Shepard’s Method

Meddaikar, Muhammad Y. and Irisarri, Francois-Xavier and Abdalla, M.M. (2015) Blended Composite Optimization combining Stacking Sequence Tables and a Modified Shepard’s Method. 11th World Conference on Structural and Multidisciplinary Optimization, 7-12 Jun 2015, Sydney, Australia.

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Abstract

This article presents a computationally-efficient optimization tool for stacking sequence design of blended composite structures. In this tool, blended laminates are designed using stacking sequence tables (SST), coupled with a suitable genetic algorithm (GA). The SST approach guarantees complete-blending, ensuring manufacturability of the optimized design. The concept of successive structural approximations is implemented to improve computational efficiency. Optimizations are carried out on the approximations of responses rather than actual responses themselves, thus reducing the number of expensive design analyses. A recently-proposed modified Shepard's interpolation enriches the quality of the approximations used, by constructing multi-point approximations using the elite designs of the previous iterations. The generality and efficiency of the algorithm is further improved by directly approximating panel loads, thus enabling implementation of a wide range of stress-based design criteria. An analytical multi-panel blended composite problem is presented as an application. The results show that completely blended and feasible stacking sequence designs can be obtained, having its structural performance close to the theoretical continuous optimum itself.

Item URL in elib:https://elib.dlr.de/101187/
Document Type:Conference or Workshop Item (Speech)
Title:Blended Composite Optimization combining Stacking Sequence Tables and a Modified Shepard’s Method
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Meddaikar, Muhammad Y.Muhammad.Meddaikar (at) dlr.dehttps://orcid.org/0000-0001-9580-7023
Irisarri, Francois-XavierONERA, ChatillonUNSPECIFIED
Abdalla, M.M.Aerospace Structures, Delft University of TechnologyUNSPECIFIED
Date:June 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:stacking sequence optimization, blended composites, structural approximations
Event Title:11th World Conference on Structural and Multidisciplinary Optimization
Event Location:Sydney, Australia
Event Type:international Conference
Event Dates:7-12 Jun 2015
Organizer:International Society for Structural and Multidisciplinary Optimization
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Meddaikar, Muhammad Yasser
Deposited On:22 Dec 2015 15:06
Last Modified:31 Jul 2019 19:58

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