Abstract
In this article, we study the HDG approximation for the obstacle problem, i.e., variational inequalities, with remarkable convergence properties. Using polynomials of degree k ≥ 0 for both the potential u and the flux q, we show that the approximations of the potential and flux converge in L2 with the optimal order of k + 1 . The approximate trace of the potential is proved to converge with optimal order k + 1 in L2. Finally, numerical results are presented to verify these theoretical results.
Similar content being viewed by others
References
Friedman, A.: Variational Principles and Free-Boundary Problems. second edition. Robert E. Krieger Publishing Variational Inc., Malabar (1988)
Kinderlehrer, D., Stampacchia, G.: An Introduction to Variational Inequalities and Their Applications Pure and Applied Mathematics, vol. 88. Academic, New York (A Subsidiary of Harcourt Brace Jovanovich, Publishers) (1980)
Rodrigues, J.-F.: Obstacle Problems in Mathematical Physics, volume 134 of North-Holland Mathematics Studies. North-Holland Publishing Co., Amsterdam (1987). Notas de Matematica [Mathematical Notes], 114
Brezis, H., Stampacchia, G.: Sur la regularite de la solution d’inequations elliptiques. Bull. Soc. Math. France 96, 153–180 (1968)
Lions, J.: Quelques Methodes De R6solution Des Probl+Mes Aux Limites Non Lin6aires. Dunod, Paris (1969)
Fichera, G.: Boundary value problems of elasticity with unilateral con- straints. Handbuch der Physik, Band VI a/2, Mechanics of Solids II Springer, 1972, pp. 391–424
Frehse, J.: On the regularity of the solution of a second order variational inequality. Boll. Un. Mat. Ital.(4) 6, 312–315 (1972)
Brezzi, F., Hager, W.W., Raviart, P.A.: Error estimates for the finite element solution of variational inequalities part i. primal theorey. Numer. Math. 28, 431–443 (1977)
Hlavacek: Dual finite element analysis for unilateral boundary value problems. Apl. Mat. 22, 14–51 (1977)
Brezzi, F., Hager, Raviart, P.A.: Error estimates for the finite element solution of variational inequalities part II. Mixed methods. Numer. Math. 31, 1–16 (1978)
Kikuchi, N.: Convergence of a penalty method for variational inequalities. TICOM Report 79-16 the University of Texas at Austin (1979)
Glowinski, R., Lions, J.-L., Tremolieres, R.: Numerical Analysis of Variational In- equalities, North-Holland, Amsterdam (1981)
Glowinski, R.: Numerical Methods for Nonlinear Variational Problems. Springer, New York (1984)
Hoppe, R.H.W., Kornhuber, R.: Adaptive multilevel methods for obstacle problems. SIAM J. Numer. Anal. 31, 301–323 (1994)
Blum, H., Suttmeier, F.-T.: Weighted error estimates for finite element solutions of variational inequalities. Computing 65, 119–134 (2000)
Yan, N.: A posteriori error estimators of gradient recovery type for elliptic obstacle problems[J]. Adv. Comput. Math. 15(1-4), 333–361 (2001)
Wang, F., Han, W., Cheng, X.L.: Discontinuous Galerkin methods for solving elliptic variational inequalities[J]. SIAM J. Numer. Anal. 48(2), 708–733 (2010)
Hlavacek: Dual finite element analysis for elliptic problems with obstacles on the boundary
Cockburn, B., Gopalakrishnan, J.: A characterization of hybridized mixed methods for second order elliptic Problems[J]. SIAM J. Numer. Anal. 42(1), 283–301 (2005)
Cockburn, B., Dong, B., Guzman, J.: A superconvergent LDG-hybridizable Galerkin method for second-order elliptic problems. Math. Comput. 77, 1887–1916 (2008). MR2429868 (2009d:65166)
Cockburn, B.: Unified hybridization of discontinuous galerkin, mixed and continuous galerkin methods for second order elliptic Problems[J]. SIAM J. Numer. Anal. 47(2), 1319–1365 (2009)
Cockburn, B., Gopalakrishnan, J., Sayas, F.-J.: A projection-based error analysis of HDG methods. Math. Comput. 79, 1351–1367 (2010)
Li, B, Xie, X.: Analysis of a family of HDG methods for second order elliptic problems [J]. J. Comput. Appl. Math. 307, 37–51 (2016)
Funding
This subject is supported partially by NSFC No. 11672032.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhao, M., Wu, H. & Xiong, C. Error analysis of HDG approximations for elliptic variational inequality: obstacle problem. Numer Algor 81, 445–463 (2019). https://doi.org/10.1007/s11075-018-0556-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11075-018-0556-5