Sobre a modelagem e dinamica de estruturas flexiveis de rastreamento (pequenas e grandes deflexões)

AUTOR(ES)
DATA DE PUBLICAÇÃO

1997

RESUMO

In this work two models are developed to slewing flexible structures with just one link: a model considering small deflections and a model considering great deflections. For both models, the Extended Hamilton s PrincipIe is utilized so one can obtain the goveming euqations o fmotion. This equations are then nondimensionalized so one can obtain a smalI nondimensional perturbation parameter PERTENCE . This parameter appears multiplying alI the nonlinearities in each model and will be the only parameter one must variate when involved in the study of different cases. This smalI nondimensional parameter is utilized to verify the degrre of coupling between the dinamical equations of motion. Simulations are realized between smalI and great deflections and compared one with another and with the model to the very same system where no flexibility is considered. In the study of the behavior of the flexible structure in slewing motion realized in this work, the truncation utilized for the discretization of the equations of motion (assumed modes method) is done in the first mode of vibration of the system beam constrained-free

ASSUNTO(S)

sistemas de parametros distribuidos hamilton-jacobi perturbação (matematica) projeto estrutural equações

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