Buckling and strength analysis of panels with discrete stiffness tailoring
Journal article
Culliford, Lucie, Choudhry, Rizwan Saeed, Butler, Richard and Rhead, Andrew T. 2019. Buckling and strength analysis of panels with discrete stiffness tailoring. Composite Structures. 234, p. 111672. https://doi.org/10.1016/j.compstruct.2019.111672
| Authors | Culliford, Lucie, Choudhry, Rizwan Saeed, Butler, Richard and Rhead, Andrew T. |
|---|---|
| Abstract | Continuous variation of stiffness across flat plates has been shown, theoretically, to improve buckling performance by up to 60%. However, steered fibre manufacturing methods cannot achieve the minimum radius of curvature required for improvement whilst maintaining a high deposition rate. An alternative concept, Discrete Stiffness Tailoring (DST), which varies stiffness within a ply through discrete changes of angle, is compatible with high rate deposition methods such as Advanced Tape Laying. Through the simple example of redistribution of the material in a quasi-isotropic [±45/90/0]2S laminate whilst maintaining ply percentages, DST is shown both experimentally and theoretically to improve buckling stress by at least 15% with no indication of failure in regions of discrete angle change (seams). However, the reduced tensile strength of seams obtained by virtual and experimental testing means that increased buckling performance in the principle load direction needs to be balanced against loss of transverse strength |
| Keywords | Ceramics and Composites; Material Design; Fibre reinforced Composites; Finite Element Analysis; Material and Mechanical Engineering |
| Year | 2019 |
| Journal | Composite Structures |
| Journal citation | 234, p. 111672 |
| Publisher | Elsevier |
| ISSN | 0263-8223 |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compstruct.2019.111672 |
| Web address (URL) | http://hdl.handle.net/10545/624399 |
| http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| hdl:10545/624399 | |
| Publication dates | 05 Nov 2019 |
| Publication process dates | |
| Deposited | 15 Jan 2020, 15:06 |
| Accepted | 03 Nov 2019 |
| Rights | Attribution-NonCommercial-NoDerivatives 4.0 International |
| Contributors | University of Bath and University of Derby |
| File | File Access Level Open |
| File | File Access Level Open |
| File | File Access Level Open |
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