Influência da configuração de bobinagem no comportamento mecânico de cilindros de compósito polimérico / Influence of the stacking sequence of layers on the mechanical behavior of polymeric composite cylinders

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

This work evaluated experimentally the influence of the stacking sequence of layers symmetrical and asymmetrical on the mechanical behavior of polymeric composite cylinders. For so much, two open-ended cylinders groups were manufactured by filament winding process, which had different stacking sequence related to the laminate midplane, characterizing symmetrical and asymmetrical laminates. The composite cylinders were made with epoxy matrix and carbon fiber as reinforcement. For evaluation of the mechanical strength, the cylinders were tested hydrostatically, which consisted of internal pressurization in a hydrostatic device through the utilization of a fluid until the cylinders burst. Additionally, were compared the strains and failure modes between the cylinders groups. The utilization of a finite element program allowed to conclude that this tool, very used in design, does not get to identify tensions in the fiber direction in each composite layer, as well as interlaminar shear stress, that appears in the cylinders with asymmetrical stacking sequence. The tests results showed that the stacking sequence had influence in the mechanical behavior of the composite cylinders, favoring the symmetrical construction.

ASSUNTO(S)

polymeric composite hydrostatic test compósito polimérico cylinder cilindro ensaio hidrostático

ACESSO AO ARTIGO

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