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Minimization arguments in analysis of variational–hemivariational inequalities

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Abstract

In this paper, an alternative approach is provided in the well-posedness analysis of elliptic variational–hemivariational inequalities in real Hilbert spaces. This includes the unique solvability and continuous dependence of the solution on the data. In most of the existing literature on elliptic variational–hemivariational inequalities, well-posedness results are obtained by using arguments of surjectivity for pseudomonotone multivalued operators, combined with additional compactness and pseudomonotonicity properties. In contrast, following (Han in Nonlinear Anal B Real World Appl 54:103114, 2020; Han in Numer Funct Anal Optim 42:371–395, 2021), the approach adopted in this paper is based on the fixed point structure of the problems, combined with minimization principles for elliptic variational–hemivariational inequalities. Consequently, only elementary results of functional analysis are needed in the approach, which makes the theory of elliptic variational–hemivariational inequalities more accessible to applied mathematicians and engineers. The theoretical results are illustrated on a representative example from contact mechanics.

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Acknowledgements

This research was supported by the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie Grant Agreement No. 823731 CONMECH, and by Simons Foundation Collaboration Grants, No. 850737. The authors are grateful to the anonymous referees for their valuable comments and suggestions on the original manuscript.

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Correspondence to Mircea Sofonea.

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Sofonea, M., Han, W. Minimization arguments in analysis of variational–hemivariational inequalities. Z. Angew. Math. Phys. 73, 6 (2022). https://doi.org/10.1007/s00033-021-01638-z

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