Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)
- Volume 20 Issue 7
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- Pages.2067-2077
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- 1996
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- 1226-4873(pISSN)
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- 2288-5226(eISSN)
DOI QR Code
Adaptive Analysis Methods for the Accuracy Control of Finite Element Solutions
유한요소해의 정확도 조절을 위한 적응해석법
Abstract
In adaptive finite element analysis, r- and h-methods are generally used on the basis of a discretization error estimator. In this paper, an rh-method is proposed as a new adaptive method which can improve the adaptivity performance by using both of them. This suggested rh-method moves nodal coordinates of initially given model to adjust element discretization errors and thereafter performes the h-method tdo obtain the specified accuracy of finite element solutions. Numerical experiments for various plane problems were performed using 4-noded isoparametric quadrilateral elements. As a result, the rh-method has been shown to be an accurate and efficient adaptive analysis method to obtain as improved solution.
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