“…Example 2. Contact problems involving viscoelastic materials with long memory are a class of important problems, which have been studied by many authors, such as in [4,10]. For more details on the long memory models, we refer to [13,20].…”
In this paper, a mathematical model which describes the explicit time dependent quasistatic frictional contact problems is introduced and studied. The material behavior is described with a nonlinear viscoelastic constitutive law with time-delay and the frictional contact is modeled with nonlocal Coulomb boundary conditions. A variational formulation of the mathematical model is given, which is called a quasistatic integro-differential variational inequality. Using the Banach's fixed point theorem, an existence and uniqueness theorem of the solution for the quasistatic integro-differential variational inequality is proved under some suitable assumptions. As an application, an existence and uniqueness theorem of the solution for the dual variational formulation is also given.
“…Example 2. Contact problems involving viscoelastic materials with long memory are a class of important problems, which have been studied by many authors, such as in [4,10]. For more details on the long memory models, we refer to [13,20].…”
In this paper, a mathematical model which describes the explicit time dependent quasistatic frictional contact problems is introduced and studied. The material behavior is described with a nonlinear viscoelastic constitutive law with time-delay and the frictional contact is modeled with nonlocal Coulomb boundary conditions. A variational formulation of the mathematical model is given, which is called a quasistatic integro-differential variational inequality. Using the Banach's fixed point theorem, an existence and uniqueness theorem of the solution for the quasistatic integro-differential variational inequality is proved under some suitable assumptions. As an application, an existence and uniqueness theorem of the solution for the dual variational formulation is also given.
“…More recently, existence and uniqueness results for quasistatic bilateral contact problems with damage, and the simplified Coulomb law of dry friction involving viscoplastic materials have been obtained by Campo et al [8]. The existence and uniqueness of a weak solution to the quasistatic frictionless contact problem with damage of a viscoelastic body with long memory can be found in Campo et al [9]. Quasistatic contact problems with damage for viscoelastic material with long memory and the subdifferential contact and friction conditions were studied in Li and Liu [12] in the framework of hemivariational inequalities.…”
Section: Introductionmentioning
confidence: 97%
“…Quasistatic contact problems with normal compliance and damage have been considered in several papers. Such problems with Coulomb's law of dry friction were studied in Han et al [5] and frictionless quasistatic models were analysed in Chau and Ferna´ndez [6], Chau et al [7], and Campo et al [8,9]. Results on the evolution of damage in elastic-viscoplastic and elastic materials in quasistatic problems without contact can be found in Kuttler [10], and Kuttler and Shillor [11], respectively.…”
We consider a mathematical model which describes the frictional contact between a deformable body and a foundation. The process is assumed to be quasistatic and the material behaviour is described by a viscoelastic constitutive law with damage. The friction and contact are modeled with subdifferential boundary conditions. We derive the variational formulation of the problem which is a coupled system of a hemivariational inequality for the velocity and a parabolic variational inequality for the damage field. Then we prove the existence of a unique weak solution to the model. The proof is based on arguments of time-dependent stationary inclusions and a fixed point theorem.
“…Here A is a given nonlinear operator, F is the relaxation operator, and G represents the elasticity operator. In (1) and everywhere in this paper the dot above a variable represents derivative with respect to the time variable t. It follows from (1) that at each time moment, the stress tensor σ (t) is split into two parts: σ (t) = σ V (t) + σ R (t), where σ V (t) = A ε(u (t)) represents the purely viscous part of the stress, and σ R (t) satisfies the rate-type elastic relation σ R (t) = G ε(u (t)) + t 0 F t − s, ε(u (s)), α (s) ds. (2) Various results, example and mechanical interpretations in the study of elastic materials of the form (2) can be found in [1,17] and references therein.…”
We consider a quasistatic contact problem between two viscoelastic bodies with long-term memory and damage. The contact is bilateral and the tangential shear due to the bonding field is included. The adhesion of the contact surfaces is taken into account and modelled by a surface variable, the bonding field. We prove the existence of a unique weak solution to the problem. The proof is based on arguments of time-dependent variational inequalities, parabolic inequalities, differential equations and fixed point.
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