Summary
Maximum and minimum principles for certain plate bending problems are derived in a unified manner from the canonical theory of complementary variational principles for multiple operator equations. The minimum principle is known in the literature, but the maximum principle appears to be new. A new error bound for approximate variational solutions is also presented.
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References
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Arthurs, A.M., Reeves, R.I. Complementary variational principles for a class of biharmonic problems. J Eng Math 8, 167–173 (1974). https://doi.org/10.1007/BF02353619
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DOI: https://doi.org/10.1007/BF02353619