The paper discusses damping principle and damping characteristics of viscoelastic materials as one important material composition of damping plates,as well as two structures of viscoelastic damping materials.

By investigation the propagation and energy disspation principle on the basis of constitutive relation of viscoelastic materials,it shows that a viscoelastic circular plate waveguide absorber has a good effect on vibration dampling and stimulation.

A dynamic model of viscoelastic waveguide absorber, whose section along its longitudinal axis is reduced according to an exponential function, is presented based on the differential constitutive relations of viscoelastic materials.

Acoustic parameters measurement of viscoelastic material in median and high frequency;

Stress singularity of composite and viscoelastic material;

Acoustic Parameter Measurement of Viscoelastic Material at Intermediate and High Frequency;

The amplitudes of interlaminar transverse stresses were computed for different Young’s modulus and thickness of viscoelastic layer.

The radial displacement max-value and interlaminar transverse stress max-value in the plates were computed for the lower-rank models and the viscoelastic layer′ influence on the interlaminar transverse stresses were analyzed.

For the laminated cylindrical shells with an unconstrained viscoelastic layer,the results of predicted vibration frequencies and loss factors showthe good agreement with the A.