Kompozicinės medžiagos vtrpesių energijos disipacija

Abstract

Vibration energy dissipation of a composite material

The paper discusses the problem of evaluating vibration energy dissipation of a composite material. It is suggested to express the dissipation cofficient in a line (2). The reduced component dissipation coefficients c _i φ_i are the members of the line. The ratio of reduction c_i , shows the proportion by which a separate component adds to the energy dissipation of the entire composition. By analysing the accumulated and dissipated strain energy of a composite material were obtained (6). On the basis of these expressions, formulas for calculating the dissipation coefficients of a three-layer bar and that with a galvanic covering were devised. The analysis made leads to the following conclusions:
– the vibration energy dissipation coefficient of a composite material is equal to the sum of the reduced dissipation coefficients of the composition component materials; 
– the ratio of reduction c _i depends on the value of the component accumulated energy;
– for comparing separate components as to the energy dissipation, the product φ_i E_i should be used.

Article in Lithuanian.

First Published Online: 26 Jul 2012

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