Titlebook: Structural Design via Optimality Criteria; The Prager Approach George I. N. Rozvany Book 1989 Kluwer Academic Publishers 1989 Fundament.Su

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Optimal Plastic Design of Beams with Unspecified Actions or Reactions,ith movable supports becomes usually non-convex and hence all solutions satisfying the necessary conditions for optimality must be investigated. Moreover, some segments of the beam may take on a zero cross-section in the optimal solution (see Fig. 3.4e, for example) and thus the designer is faced wi

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Optimal Plastic Design of Beams: Allowance for Selfweight, Bounded Spatial Gradients (Niordson-Consved acceleration and fuel economy. In the case of immobile terrestrial structures, such as buildings and bridges, the least-weight criterion is of lesser importance because a variety of practical considerations restrict the design to be adopted. Notable exceptions are long-span structures for two re

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,Optimal Elastic Design of Beams — Optimization of Segmentation, Constraints on Spatial Gradients (Nre or by imposing constraints on spatial gradients. In the former case, further economy can be achieved by optimizing the segment boundaries as well. Inaddition to optimization of segmentation and Niordson-constraints, multicriteria design of beams will be considered briefly in this chapter.

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A Short History of Optimality Criteria Methods,ory were introduced around the turn of the century by an Australian scientist, A.G.M. Michell (1904). This pioneering effort appears all the more remarkable if we consider the fact that Michell was a versatile inventor (crankless engine, thrust bearing) with major interests (hydraulics, lubrication)

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Optimal Plastic Design of Beams with Unspecified Actions or Reactions,ith movable supports becomes usually non-convex and hence all solutions satisfying the necessary conditions for optimality must be investigated. Moreover, some segments of the beam may take on a zero cross-section in the optimal solution (see Fig. 3.4e, for example) and thus the designer is faced with a simple type of ..

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