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Reduced minimization of product and non-product type in Mindlin plate elements

✍ Scribed by Kim Yong-Woo

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
191 KB
Volume
40
Category
Article
ISSN
0029-5981

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✦ Synopsis

This paper presents concepts of two-dimensional reduced minimization of product type and non-product type: the analytical reduced minimization theory in one dimension when extended to that of Mindlin plate elements reveals that the two-dimensional reduced minimization for Lagrangian plate elements can be obtained by the successive use of the one-dimensional reduced minimization. But this relation does not hold for serendipity elements due to an incompleteness of displacement functions.

This paper examines effects of various integrations of shear strain energy by applying the one-dimensional successive reduced minimization to Lagrangian and serendipity plate elements. The results show why the selective 2;3 and 3;2 rule for the transverse shear strain energies of an 8-noded plate element cannot eliminate locking and why a conventional 12-noded plate element of serendipity family does not have one-order-lower, optimal Gauss strain locations.

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