A modified four-node rectangular element
DOI:
https://doi.org/10.23998/rm.75555Keywords:
structural mechanics, sensitized principle of virtual work, four-node rectangular elementAbstract
The sensitized principle of virtual work is applied to modify the stiffness matrix of the ordinary four-node rectangular element by sensitizing terms. The sensitizing parameter values are determined by the single-element strain energy test. The reference solutions used are of bending mode types and their application removes the so-called parasitic shear behavior. A stiffness matrix of good quality is obtained corresponding exactly to an earlier formulation using incompatible modes.
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Copyright (c) 2019 Jouni Freund, Eero-Matti Salonen
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