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- W3137995923 abstract "This study presents the use of variable stiffness concept via curvilinear fiber placement to achieve improved structural characteristics in composite thin-walled beams (TWBs). The TWB used in the study is constructed in circumferentially asymmetric stiffness (CAS) configuration. The variation of fiber angles along the span and the width of the TWB is included by defining two fiber path functions. A parametric study is performed to investigate the effects of different fiber paths on the structural performance metrics including frequency spacing, unit twist, and critical buckling load. For this purpose, a semi-analytical solution method is developed to conduct free vibration, deformation, and buckling analyses of the TWB with curvilinear fibers. The semi-analytical method is validated with several finite element (FE) analyses performed using ABAQUS. Elastic stress analyses of TWBs with selected fiber paths subjected to simplified distributed loading are also conducted using the FE method, and a ply failure criterion is applied to evaluate the strength of these TWBs. Overall results show that curvilinear fiber placement varied along the span leads to greater structural performance for a composite TWB than the straight fiber configuration." @default.
- W3137995923 created "2021-03-29" @default.
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- W3137995923 date "2021-03-11" @default.
- W3137995923 modified "2023-10-16" @default.
- W3137995923 title "Improvement of structural characteristics of composite thin-walled beams using variable stiffness concept via curvilinear fiber placement" @default.
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- W3137995923 doi "https://doi.org/10.1177/0954410020988240" @default.
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