Locking-Free Degenerated Isoparametric Shell Element

ZHANG Xiang-ming; WANG An-wen; HE Han-lin

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ZHANG Xiang-ming, WANG An-wen, HE Han-lin. Locking-Free Degenerated Isoparametric Shell Element[J]. Applied Mathematics and Mechanics, 2001, 22(5): 541-549.

Citation:

ZHANG Xiang-ming, WANG An-wen, HE Han-lin. Locking-Free Degenerated Isoparametric Shell Element[J]. Applied Mathematics and Mechanics, 2001, 22(5): 541-549.

Citation:

ZHANG Xiang-ming, WANG An-wen, HE Han-lin. Locking-Free Degenerated Isoparametric Shell Element[J]. Applied Mathematics and Mechanics, 2001, 22(5): 541-549.

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Locking-Free Degenerated Isoparametric Shell Element

Department of Basic Courses, Naval University of Engineering, Wuhan 430033, P R China

Received Date: 1998-10-26
Rev Recd Date: 2000-08-18
Publish Date: 2001-05-15

Abstract

Abstract

An 8-noded locking-free degenerated isoparametric shell element is presented.A revised interpolation for shear strain terms was constructed in natural co-ordinate system such that all necessary modes (translation,rotation and constant curvature) are preserved,which can be used to eliminate shear locking.A revised interpolation for membrane strains was produced in the local Cartesian co-ordinate system to overcome membrane locking behavior.The new 8-noded element has the proper rank,with the requisite number of zero eigenvalues each associated with a rigid mode.The element does not exhibit membrane or shear locking for large span-thickness ratio.The element does not form element mechanisms or extra spurious zero energy modes.Therefore,it can be used for both thin and thick shells.
- degenerated isoparametric shell element,
- shear locking,
- membrane locking,
- finite element method

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References(7)

References

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