分片实验与有限元法
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Patch Test and Finite Element Method
Abstract: This paper realized that the Patch Test is very important to Finite Element Methods. Derive the requirement to strain and displacement of Patch Test. Give the relationship between weak form of continuity equation and the Patch Test, through which the hybrid element method and quasi-conform element method are analyzed. Refined direct stiffness method and generalized conforming elements are also analyzed about why they can pass patch test. At last, as an example of using the requirement of patch test for displacement, improved the BCIZ Element.
Key Words: patch test, weak form, string-net function, finite element method
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