Noncoercive hemivariational inequality and its applications in nonconvex unilateral mechanics (Q678369)

Special classes of hemivariational inequalities of the type \[ u\in C,\;(Au-f,v) \geq 0 \;\text{ for all } v \in T_C(u) \] are studied where the set \(C\) is closed and star-shaped with respect to a certain ball, \(T_C(u)\) is the Clarke's tangent cone to \(C\) at \(u \in C\), \(A\) is a pseudomonotone operator. Existence results for these problems including the noncoercive case are discussed and concrete applications are given. Particularly, the equilibrium problem of a material point which is constrained to remain in a closed set \(C \subset R^3\) which is star-shaped with respect to a ball, the laminated plate problem and the generalized Signorini-like problem in elasticity are described.