ランダム荷重を受ける構造物の最適設計 : 第2報 : 荷重位置が確率的に与えられる場合

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Optimum Design of Structures Subjected to Random Loads : 2nd report : In the Case of Uncertain Load Position Governed by Given Probability Law yukio TADA, Ryuichi MATsuMOTO and Kaaru KUSAKA In this paper, we consider a shape determination problem of a beam, which is subjected to a given random load such that its load position is uncertain but thought to be governed by a given probability law. In the case of an actual structure, the load position of the random load isn't strictly fixed. But if the load position is assumed to be governed by a certain probability law, we can obtain its influence term without additional eigenv8lue analysis. By using it in the design stage, in which we use "Energy-Ratio-Method", the optimum structural design can be accomplished with the sale iterations as in the case of a determinate load position. The optimum shape gives a considerable reduction of the expected value of the strain energy under the condition that the volume of the beam is constant. It means that we can obtain the shape with higher stiff-ness without increase in the computing time of analysis.
社団法人日本機械学会の論文
1989-03-25