Stacking sequence optimization of the anti-buckled graphite/epoxy laminated composites for minimum weight using generalized pattern search algorithm
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Date
2014-03
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Izmir Institute of Technology
Open Access Color
Green Open Access
No
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No
Abstract
Composite materials have been increasingly used during the last decades due to
their properties such as low weight, high stiffness, superior fatigue and corrosion
resistance. They have been used in aerospace, automobile, marine applications and etc.
Composite materials being an expensive but efficient technology to get minimum
weight structures, it is logical to make an attempt to find out how to design properly
optimum laminated composite plates with no reduction in their strength. The aim of the
thesis is to find the optimum stacking sequence to obtain the minimum thickness
(weight) of laminated composite plates in different loadings and plate dimensions under
buckling constraint. Moreover, a comparison study of conventional and continuous
designs are performed to determine the effect of stacking sequence on weight. The
objective function is the critical buckling load factor. Fiber angles of the composite
plates are taken as continuous design variables and the plate is assumed to be balance
and symmetric. Composite plates made of graphite/epoxy have been considered in this
thesis. A combination of Generalized Pattern Search Algorithm (GPSA) and Genetic
Algorithm (GA) has been considered as an optimization method. All the results show
that the loading conditions and dimensions of composite plates are significant in
stacking sequences optimization of laminated composite materials in terms of maximum
critical buckling load factor and minimum thickness.
Description
Thesis (Master)--Izmir Institute of Technology, Mechanical Engineering, Izmir, 2014
Includes bibliographical references(leaves: 62-64)
Full text release delayed at author's request until 2016.04.17
Text in English; Abstract: Turkish and English
Includes bibliographical references(leaves: 62-64)
Full text release delayed at author's request until 2016.04.17
Text in English; Abstract: Turkish and English
Keywords
Algorithms, Generalized Pattern Search Algorithm, Mechanical Engineering, Makine Mühendisliği