VISCOELASTIC SUBSTRATES EFFECTS ON THE ELIMINATION OR REDUCTION OF THE SANDWICH STRUCTURES OSCILLATIONS BASED ON THE KELVIN-VOIGT MODEL
AbstractEFFECTS OF VISCOELASTIC SUBSTRATES ON THE SANDWICH STRUCTURES OSCILLA-TIONS ARE EXAMINED IN THIS PAPER. IN THIS REGARD, DYNAMIC RESPONSE OF SANDWICH ANNULAR PANELS WITH FG POLAR ORTHOTROPIC FACE SHEETS RESTING ON VISCOELASTIC SUBSTRATE IS PRESENTED. YOUNG’S MODULUS IN THE RADIAL AND CIRCUMFERENTIAL DIRECTION, SHEAR MODULUS AND DENSITY OF EACH FACE SHEET MAY BE VARIED CONTINUOUSLY IN THE RADIAL DIRECTION. THE VISCOELASTIC SUBSTRATE IS MODELED AS KELVIN-VOIGT FOUNDATION. TO DESCRIBE MORE ACCURATELY RESPONSE OF SANDWICH STRUCTURES, THE GOVERNING DYNAMICAL EQUATIONS ARE DERIVED BASED ON THE LAYERWISE THEORY AND FIVE SYSTEMS OF SECOND ORDER COUPLED PARTIAL DIFFERENTIAL EQUATIONS ARE OBTAINED. THE EFFECTS OF THE STIFFNESS AND DAMPING COEFFICIENTS OF THE FOUNDATION ON THE DYNAMIC BEHAVIOR OF SANDWICH PLATE ARE INVESTIGATED FOR VARIOUS TRANSIENT LOADS AND BOUNDARY CONDITION. SINCE NO AVAILABLE RESULTS MAY BE FOUND IN LITERATURE TO DEMONSTRATE THE EFFICIENCY AND ACCURACY OF THE OBTAINED RESULTS, THE OBTAINED RESULTS ARE VERIFIED BY COMPARISON WITH FINITE ELEMENT RESULTS BASED ON THE THREE DIMENSIONAL THEORY OF ELASTICITY FOR SOME SPECIAL CASES.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).