Open AccessVIBRATION ENERGY DISSIPATION OF A COMPOSITE MATERIAL/KOMPOZICINĖS MEDŽIAGOS VTRPESIŲ ENERGIJOS DISIPACIJA
Author(s) -
Petras Baradokas
Publication year - 1998
Publication title -
journal of civil engineering and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.529
H-Index - 47
eISSN - 1822-3605
pISSN - 1392-3730
DOI - 10.3846/13921525.1998.10531418
Subject(s) - dissipation , vibration , composite number , materials science , energy (signal processing) , component (thermodynamics) , mechanics , composite material , physics , thermodynamics , acoustics , quantum mechanics
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 φi 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.