動的問題の有限要素解析におけるメッシュ更新に関する研究

概要

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It s well known that the accuracy of finite element analysis is deeply dependent on the mesh sub-division. This fact is true not only for static problems but also for dynamic problems. Since displacement and stress distributions vary step by step in dynamic analysis, the distribution of a posteriori error vary step by step, which means that the adequate mesh sub-division is also time dependent. Hence, the mesh sub-divisions giving a less a posteriori error is not unique during dynamic finite element analysis. In this paper. mesh sub-division is updated during the computation based on the result of a posteriori error analyses. It is shown that present study of updating mesh sub-division technique can give us highly accurate solution with a few degrees of freedom.
社団法人日本船舶海洋工学会の論文
1999-09-04