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Isogeometric plate element for unstiffened and blade stiffened laminates based on refined zigzag theory

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Haşim, Kazım Ahmet and Kefal, Adnan and Madenci, Erdoğan (2019) Isogeometric plate element for unstiffened and blade stiffened laminates based on refined zigzag theory. Composite Structures, 222 . ISSN 0263-8223 (Print) 1879-1085 (Online)

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Official URL: http://dx.doi.org/10.1016/j.compstruct.2019.110931

Abstract

This study presents an isogeometric plate element, IG-RZT based on the refined zigzag theory (RZT) to model bending behavior of blade stiffened and unstiffened thick or thin laminates. This element is free of shear-locking and shear correction factors due to the use of Non-Uniform Rational B-Splines (NURBS) functions which satisfy the requirement of C1 continuity in the computation of transverse shear stresses. Comparison of the predictions with IG-RZT element with the previous benchmark solutions reveals fast convergence and high accuracy for general laminate layups under different loading and boundary conditions. Thus, the IG-RZT element can be adopted for computationally efficient and accurate analysis of unstiffened and stiffened flat laminates.

Item Type:Article
Uncontrolled Keywords:Composite, Flat shells, Zigzag functions, Isogeometric, Finite element, Single-layer theory
Subjects:Q Science > Q Science (General)
T Technology > TJ Mechanical engineering and machinery
T Technology > TA Engineering (General). Civil engineering (General)
ID Code:39835
Deposited By:Adnan Kefal
Deposited On:29 Apr 2020 16:11
Last Modified:29 Apr 2020 16:11

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