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Discrete and non‐discrete mixed methods for plate bending analysis
Author(s) -
Fujii Fumio
Publication year - 1981
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620171209
Subject(s) - mathematics , spline interpolation , spline (mechanical) , thin plate spline , piecewise , interpolation (computer graphics) , boundary (topology) , mathematical analysis , bending of plates , boundary value problem , bending , computer science , structural engineering , engineering , motion (physics) , statistics , bilinear interpolation , artificial intelligence
For plate bending analysis, both discrete and non‐discrete mixed methods are presented by using spline functions in the Hellinger‐Reissner variational principle. Piecewise spline interpolation with local supports and overall spline interpolation with boundary knots are applied to each of two mixed functionals. The prescribed boundary conditions can be considered by multiple boundary knots. The convergence behaviour of the mixed methods presented is studied. Numerical examples show that a high degree of accuracy can be obtained due to continuous properties in the high derivatives of the employed shape functions. The proposed mixed methods are found to be very competitive with other numerical methods for plate bending problems.