Heterosis Shell Element in GTSTRUDL

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by William F. Cofer, Georgia Inst of Technology, Atlanta, GA, USA,
Kenneth M. Will, Georgia Inst of Technology, Atlanta, GA, USA,

Document Type: Proceeding Paper

Part of: Electronic Computation:

Abstract: The most popular shell finite element is the degenerated solid type, originally formulated to model thick shells. However, in thin shell applications, this element fails by 'locking'. Reduced integration avoids this problem, but is the cause of spurious zero energy modes of deformation. In plate analysis, an element with neither flaw was developed by applying different shape functions to the transverse shear and bending moment portions of the stiffness matrix. A similar procedure has been followed to obtain a shell element with accuracy in thin situations and no communicable mechanisms.

Subject Headings: Finite element method | Plates | Deformation (mechanics) | Transverse shear | Bending (structural) | Moment (mechanics) | Stiffening |

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