Análise em compósitos laminados de tecido híbrido com fibra de carbono/vidro através do método dos elementos finitos
The constant evolution of technology has brought about the need for the production and development of new materials with the intention of covering increasingly specific service conditions. In this sense, laminated composites emerged to attend these conditions, making their indispensable in the aeron...
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Formato: | Dissertação |
Idioma: | pt_BR |
Publicado em: |
Universidade Federal do Rio Grande do Norte
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Endereço do item: | https://repositorio.ufrn.br/handle/123456789/46808 |
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Resumo: | The constant evolution of technology has brought about the need for the
production and development of new materials with the intention of covering
increasingly specific service conditions. In this sense, laminated composites
emerged to attend these conditions, making their indispensable in the aeronautical,
aerospace industry, among others. The Finite Element Method was adopted in this
work to perform the tensile test for the evaluation of the mechanical behavior of the
hybrid composite material of carbon fiber/glass. Test specimens of the composite
produced with fiber orientation angles (0°, 30°, 45°, 60° and 90°) were simulated
with and without central hole, in order to also verify the influence of the stress
concentration on the specimens. To evaluate the influence of the stressconcentrating factor, the residual resistance (RS) of this material was studied. The
Hashin failure criterion was adopted in the analysis of this hybrid composite in order
to study its damage processes. Next, the region near the hole was also analyzed in
order to study the stress gradient. The maximum normal stresses obtained
numerically were compared with the experimental data found in the literature.
Finally, the results showed that the numerical implementation of the Hashin
Criterion was able to adequately represent the stress distribution behavior in the hole region. |
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