9.Central University_Seminars

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Browsing 9.Central University_Seminars by Subject "adhesion"

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    A dynamic contact problem between elasto-viscoplastic piezoelectric bodies with normal compliance adhesion and damage
    (University Of Eloued جامعة الوادي, 2020-02-23) Maiza Laid; Tedjani Hadj ammar
    We consider a dynamic frictionless contact problem between two elasto-viscoplastic piezo- electric bodies with damage. The evolution of the damage is described by an inclusion of parabolic type. The contact is modelled with normal compliance condition. The adhesion of the contact surfaces is considered and is modelled with a surface variable, the bonding eld whose evolution is described by a rst order di erential equation: .......................... We derive variational formulation for the model and prove an existence and uniqueness result of the weak solution. The proof is based on argu- ments of nonlinear evolution equations with monotone operators, a classical existence and uniqueness result on parabolic inequalities, di erential equations and xed-point arguments.
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    Frictional contact problem between thermo-electro-elastic bodies with long-term memory
    (University Of Eloued جامعة الوادي, 2020-02-23) Khezzani Rimi; Tedjani Hadj Ammar
    We study of a quasistatic frictional contact problem between two thermo-electroelastic bodies with adhesion. The temperature of the materials caused by elastic deformations. The contact is modelled with a version of normal compliance condition and the associated Coulomb's law of friction in which the adhesion of contact surfaces is taken into account. We establish a variational formulation for the model and we prove the existence of a unique weak solution to the problem. The proof is based on a classical existence and uniqueness result on parabolic equalities, di erential equations and xed point arguments.