Designing modular 3D printed reinforcement of wound composite hollow beams with semidefinite programming

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00332712" target="_blank" >RIV/68407700:21110/19:00332712 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.matdes.2019.108131" target="_blank" >https://doi.org/10.1016/j.matdes.2019.108131</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matdes.2019.108131" target="_blank" >10.1016/j.matdes.2019.108131</a>

Result language

angličtina

Original language name

Designing modular 3D printed reinforcement of wound composite hollow beams with semidefinite programming

Original language description

Fueled by their excellent stiffness-to-weight ratio and the availability of mature manufacturing technologies, filament wound carbon fiber reinforced polymers represent ideal materials for thin-walled laminate structures. However, their strong anisotropy reduces structural resistance to wall instabilities under shear and buckling. Increasing laminate thickness degrades weight and structural efficiencies and the application of a dense internal core is often uneconomical and labor-intensive. In this contribution, we introduce a convex linear semidefinite programming formulation for truss topology optimization to design an efficient non-uniform lattice-like internal structure. The internal structure not only reduces the effect of wall instabilities, mirrored in the increase of the fundamental free-vibration eigenfrequency, but also keeps weight low, secures manufacturability using conventional three-dimensional printers, and withstands the loads induced during the production process. We showcase a fully-automatic procedure in detail for the design, prototype manufacturing, and verification of a simply-supported composite machine tool component, including validation with roving hammer tests. The results confirm that the 3D-printed optimized internal structure almost doubles the fundamental free-vibration eigenfrequency, allowing to increase working frequency of the machine tool, even though the ratio between elastic properties of the carbon composite and the ABS polymer used for 3D printing exceeds two orders of magnitude.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20302 - Applied mechanics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials & Design

ISSN

0264-1275

e-ISSN

1873-4197

Volume of the periodical

183

Issue of the periodical within the volume

108131

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

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UT code for WoS article

000490732800010

EID of the result in the Scopus database

2-s2.0-85072192048