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OPTIMIZATION OF VARIABLE STIFFNESS CURVED COMPOSITE PANELS UTILIZING NURBS REFERENCE PATHS
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Date
2022-5-10
Author
Çimen, Kaan
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Variable stiffness composite structure concept has been studied since 1972; however, this concept is stepped into a new age after the automated fiber placement manufacturing machines are started to be used in industry. This study presents an optimization method for three-dimensional (3D) variable stiffness composite structures. The main contribution of the current study is the definition of the reference lay-up path by Non-Uniform Rational B Splines (NURBS) in 3D. The methodology is based on defining a reference path by NURBS and optimizing the NURBS parameters by using the Particle Swarm Optimization (PSO) method to minimize the total strain energy and maximize buckling load of the 3D curved composite panel utilizing unconstrained and constrained optimization. The results show that the reference lay-up path defined by NURBS is successfully optimized such that the total strain energy and the buckling load of the final design are minimized.
Subject Keywords
Curved composite panel
,
fiber angle optimization
,
fiber path optimization
,
fiber placement machine
,
NURBS
URI
https://hdl.handle.net/11511/97719
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Graduate School of Natural and Applied Sciences, Thesis
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K. Çimen, “OPTIMIZATION OF VARIABLE STIFFNESS CURVED COMPOSITE PANELS UTILIZING NURBS REFERENCE PATHS,” M.S. - Master of Science, Middle East Technical University, 2022.
