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A discrete model for the design sensitivity analysis of multi-layered composite shells of revolution
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Orientador(es)
Resumo(s)
This paper studies the sensitivity analysis for the optimization of the multi-layered composite axisymmetric shells subjected to arbitrary static loading and free vibrations. The structural analysis is carried out using a two node frustum-cone finite element with 16 degrees of freedom based on Love-Kirchhoff assumptions. The design variables are the angle of orientation of the fibers and/or the vectorial distances from middle surface to upper surface of each ply. The constraint functions are displacements, stresses (Tsai-Hill criterion) and the natural frequency of a specified mode shape. Four types of objective functions can be used: maximum displacement or natural frequency or elastic strain energy and material volume. The design sensitivities are calculated analytically, semi-analytically and by global finite difference. The potentiality of the proposed model and the accuracy of the sensitivities of response are discussed with reference to the applications.
Descrição
Palavras-chave
Composite axisymmetric shells . Faculdade de Ciências Exatas e da Engenharia
Contexto Educativo
Citação
Soares, C. M. M., Cordeiro, N. M., & Barbosa, J. I. (1995). A discrete model for the design sensitivity analysis of multi-layered composite shells of revolution. Composites Engineering, 5(5), 533-550.
Editora
Elsevier