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Showing 1 to 4 of 4 for “"Dinâmica de máquinas"”.
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Reações de impulso em mecanismo articulado plano com folga nas articulações
… were evaluated during impact and free flight modes. External and inertia loads are accounted for. The analysis was applied to a similar linkage witha out clearances, for camparisan purposes. Digital programs were prepared for both phases of research, and numerical examples are presented. …
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Mejoramiento de un sistema mecanico por control activo
… an active element. The system is simulated by idealized masses, springs and dashpots. The proposed active compQ nent is visualized as a servo mechanism ora force transducer which recieves one of the variables of the system as an input and yields a control signal according to a prescribed law. …
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O método de direções viáveis em duas estapas para programação não-linear e aplicações a programação quadrática
… for quadratic programming, based on the sarne ideas. As a consequence of the computational implementation, a constrained line-search·procedure is developed. To avoid ili-conditionning and accelerate the convergence rate, new techniques are developed and tested by means of classical problems. For …
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Elemento finito para placas e cascas usando a teoria de Kirchhoff-Love
… shells using the theory of Kirchhoff-Love. ln arder to guarantee the continuity of rotations for the middle surface normal vectors, it was used Hermite interpolation functions for the transverse displacements and incomplete quadratic polinomials for the in-plane displacements. The finite-element …