Search results for "Smart Beam"

showing 3 items of 3 documents

A smart composite-piezoelectric one-dimensional finite element model for vibration damping analysis

2015

A one-dimensional finite element method for generally layered smart beams is presented in this paper. The model implements the first-order shear deformation beam theory and is based on the preliminary analytical condensation of the electric state to the mechanical state. This allows us to establish an effective mechanical beam kinematically equivalent to the original smart beam including the effects of electro-elastic couplings. The contributions of the external electric loads are included in both the equivalent stiffness properties and the equivalent mechanical boundary conditions. Hermite shape functions, which depend on parameters representative of the staking sequence through the equiv…

Timoshenko beam theoryEngineeringbusiness.industrySmart beamMechanical EngineeringComposite numberMechanical engineering02 engineering and technologyMixed finite element methodStructural engineering021001 nanoscience & nanotechnologyPiezoelectricityFinite element methodVibration020303 mechanical engineering & transports0203 mechanical engineeringfinite elementvibration dampingGeneral Materials ScienceMaterials Science (all)Settore ING-IND/04 - Costruzioni E Strutture Aerospaziali0210 nano-technologybusinessExtended finite element methodJournal of Intelligent Material Systems and Structures
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A FEM piezoelectric beam model for damping circuit analysis

2013

A finite element, developed for straight generally layered smart beam, is used to investigate vibration damping capability of circuit elements. First, the electric state is analytically condensed to kinematical quantities and the mechanical model is then written for shear deformable Timoshenko’s beam including the effects of electro-elastic couplings stacking sequence. The contributions of the external electric loads on both the equivalent stiffness properties and the equivalent mechanical boundary conditions are also taken into account. The finite element is formulated by using Hermite shape functions, which depend on parameters representative of the staking sequence through the equivalent…

Smart Beam Finite Element Vibration DampingSettore ING-IND/04 - Costruzioni E Strutture Aerospaziali
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A one-dimensional model for dynamic analysis of generally layered magneto-electro-elastic beams

2013

Abstract A new one-dimensional model for the dynamic problem of magneto-electro-elastic generally laminated beams is presented. The electric and magnetic fields are assumed to be quasi-static and a first-order shear beam theory is used. The electro-magnetic problem is first solved in terms of the mechanical variables, then the equations of motion are written leading to the problem governing equations. They involve the same terms of the elastic dynamic problem weighted by effective stiffness coefficients, which take the magneto-electro-mechanical couplings into account. Additional terms, which involve the third spatial derivative of the transverse displacement, also occur as a result of the …

Timoshenko beam theoryFrequency responseEngineeringAcoustics and Ultrasonicsbusiness.industryMechanical EngineeringMathematical analysisEquations of motionStructural engineeringCondensed Matter PhysicsFinite element methodMagnetic fieldVibrationsmart beams laminated beams magnetoelectroelastic laminatesDynamic problemMechanics of MaterialsBending momentbusinessSettore ING-IND/04 - Costruzioni E Strutture Aerospaziali
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