On semicoercive variational-hemivariational inequalities – existence, approximation, and regularization. (English) Zbl 1388.49005
Summary: In this paper, we are concerned with semicoercive variational-hemivariational inequalities that encompass nonlinear semicoercive monotone variational inequalities (VIs) and pseudomonotone VIs in reflexive Banach spaces and hemivariational inequalities (HVIs) in function spaces. We present existence, approximation, and regularization results. Our approach to our existence result is based on recession arguments. We employ regularization techniques of nondifferentiable optimization to smooth the jumps in the hemivariational term. We treat nonconforming finite element approximation via Mosco convergence. As an example, we consider a semicoercive unilateral boundary value problem with nonmonotone boundary conditions that models a unilateral contact problem for a nonlinear elastic body under a nonmonotone friction law.
MSC:
| 49J40 | Variational inequalities |
| 74P05 | Compliance or weight optimization in solid mechanics |
| 74M15 | Contact in solid mechanics |
| 74S05 | Finite element methods applied to problems in solid mechanics |
Keywords:
semicoercivity; pseudomonotone bifunction; hemivariational inequality; plus function; regularization by smoothing; Mosco convergence; unilateral contact; nonmonotone contactReferences:
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