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Research


Damping analysis of composite materials and structures


This direction is connected with the damping analysis of sandwich and laminated composite materials and structures. Modelling of damping is performed starting from the level of fibres and matrix or single layers. The following damping models are examined: viscous and viscoelastic (hysteretic), structural and external. Frequency-dependent viscoelastic damping model has also been studied. Dynamic characteristics (damped eigenfrequencies, damped vibration modes, loss factors, displacements in the frequency and in the time domains) are determined by the free vibration (methods of complex eigenvalues and potential energy of eigenmodes), frequency and transient response analyses.

 


Riga Technical University