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Robust Design Optimization of Structures under Uncertainties (Berichte aus der Luft- und Raumfahrttechnik)

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Notă GoodReads:
en Limba Engleză Paperback – July 2005
In this book, the formulation and the numerical method for the structural robust design are addressed. The theory and numerical techniques of structural optimization have seen a significant progress in the last two decades. Moreover, the rapidly increasing computational capabilities allows the structural optimal design to incorporate system uncertainty. The present study is intended to contribute to a better understanding of the structural optimization by putting emphasis on the design robustness in the presence of random noise under realistic conditions.Robust structural design offers reliable, quantifiable and efficient means to make products and processes insensitive to sources of variability. In this book, the robust parameter design is accomplished using structural optimization techniques.In the present study, the structural robust design problem is formulated as a multi-criteria optimization problem, in which not only the mean structural performance function but also its standard deviation is to be minimized. The second-order perturbation based stochastic finite element analysis is used for evaluating the mean value and the variance of the structural response in the robust design problem. The perturbation based approach is also extended to the stochastic analysis of path-dependent structures, in accordance with the incremental integration scheme employed for the corresponding deterministic analysis. The robust design optimization problem can be then solved with mathematical programming algorithms.In the last part of the book, the robust design problems of inelastic deformation processes are addressed, with applications to the design of an extrusion die and of a metal preform. The perturbation technique is used for the stochastic analysis of the inelastic process, where an iterative algorithm is employed for solving the perturbation equations. The numerical examples show the potential applicability of the proposed method for the robust design of industrial forming process, too.
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ISBN-13: 9783832242695
ISBN-10: 3832242694
Ilustrații: 37 schwarz-weiße Abbildungen
Dimensiuni: 149 x 212 x 12 mm
Greutate: 0.24 kg
Editura: Shaker Verlag
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