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構造解析解の確かさ推定

Certainty in results of structural analysis

中島 憲宏; 西田 明美; 川上 義明; 鈴木 喜雄

Nakajima, Norihiro; Nishida, Akemi; Kawakami, Yoshiaki; Suzuki, Yoshio

有限要素解析において、一つの課題である有限要素分割が適正に行われ計算できているかどうかという問題を解決する手段と、有限要素解析の高度化が進む中、多様に存在するアルゴリズムをどのように選択すれば適正な解析解が得られるかという計算精度の確かさあるいは不確かさを比較する手段を提案する。

Quality Assurance is an issue for computational science and engineering. It is well discussed in verification and validation for Simulation. In finite element analysis, it is a problem whether the finite element discretization is appropriate or not. Also, algorithmic choice prepared variously by the recent R&D discipline that become the problem which one to take. An experiment was performed for the static analysis and natural frequency analysis to confirm how uncertainty is revealed. As a result, by means to compare accuracy of the calculation precision that utilized a parallel environment, the numerical experiment reconfirmed that the estimate of the calculation solution was possible.

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