マイクロコンピュータによる有限要素解析のための能率的な計算法　ＩＩＩ　　剛性行列のＬＤＵ分解演算を省略した計算法とせん断変形を含む変断面ばりの弾性解析への応用

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  • An efficient method for numerical solutions of microcomputer-aided finite element analysis. 3rd report. A calculation method eliminating LDU decomposition process of the stiffness matrix and its application to an elastic analysis of variable cross sectional beams with shear deformation.
  • マイクロコンピュータ ニ ヨル ユウゲン ヨウソ カイセキ ノ タメ ノ ノウ

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This paper presents an efficient calculation method which eliminates the LDU decomposition process of the stiffness matrix in numerical solution s of the finite element method (FEM). As an example, this method is applied to an elastic analysis of variable cross sectional beams with shear deformation. The FEM using this method decreases CPU time and memory capacity in comparison with conventional FEM using the LDU process. Moreover the use of the method makes the FEM algorithm simple, and gives more accurate results. Therefore, this method is effective for microcomputer aided FEM.

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