Analysis of stress in thin plates of composite materials under dynamic load using the boundary element method / Analise de tensões em placas finas de materiais compositos sob carregamento dinamico usando o metodo dos elementos de contorno

AUTOR(ES)

Kerlles Rafael Pereira Sousa

DATA DE PUBLICAÇÃO

2009

RESUMO

This work presents a dynamic formulation of the boundary element method for stress and failure criterion analyses of anisotropic thin plates. Formulations use elastostatic fundamental solutions and inertia terms are treated as body forces. Domain integrals that come from body forces are transformed into boundary integrals using the radial integration method (RIM). In the RIM, the augmented thin plate spline is used as the aproximation function. A formulation for transient analysis is implemented. The time integration is carried out using the Houbolt method. Integral equations for the second derivatives of deflection are developed and all derivatives of fundamental solutions are computed analitically. Only the boundary is discretized in the formulation. Numerical results show good agreement with results available in literature as well as finite element results

ASSUNTO(S)

metodos de elementos de contorno deformações e tensões materiais laminados engineering boards laminated materials materiais compostos composite materials boundary element methods strains and stresses placas (engenharia)

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