最適化シンポジウム講演論文集
Online ISSN : 2424-3019
セッションID: 217
会議情報
217 ケーブル・ストラット構造の安定解析のための最適化手法
大崎 純寒野 善博
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会議録・要旨集 フリー

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A numerical method is presented for stability analysis of cable-bar structures. An optimization problem is formulated to find the minimum value of the incremental total potential energy that depends on the direction of the incremental displacements. The penalty method with slack variables is used for representing the discontinuity in member stiffness. The tangent stiffness matrix is shifted to be positive definite so that the minimum of its quadratic form is found by the inverse-power method. It is shown in the numerical examples that the minimum value of the incremental potential energy and the associated displacement increments can be found with good accuracy in about 10 steps of iteration.
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© 2008 一般社団法人 日本機械学会
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