Experimental and Theoretical Investigation of Viscoelastic Damper by Applying Fractional Derivative Method and Internal Variable Theory

Viscoelastic dampers are conventional passive vibration control devices with excellent energy dissipation performance. The fractional derivative has a simple form and high accuracy in the modelling of viscoelastic materials/dampers. internal variables reflect state evolution materials, often used to analyze deformation thermal process materials. In present work, mechanical properties plate-shear-type damper at room temperature tested under sinusoidal displacement excitations. impacts frequency amplitude on dynamic wide domain (0.1–25 Hz) investigated. higher-order model temperature–frequency equivalent principle employed characterize influence, variable theory considering internal/microscale structure evolutions is introduced capture affection. modified (ITHF) accurate enough describing behaviors varying frequencies amplitudes.