Mechanics of Composite Materials

, Volume 19, Issue 6, pp 808–811 | Cite as

Frequency dependence of vibration damping in reinforced composites

  • B. L. Pelekh
  • B. I. Salyak
Article
  • 59 Downloads

Conclusions

  1. 1.

    We determined experimentally the dependence of REDψa) on the direction of the reinforcement for frequencies of the fundamental resonance of displacement with fixed level of displacement amplitudeα in fibrous composites.

     
  2. 2.

    Evaluation of the damping properties according toψ1a of basalt-fiber reinforced plastics, especially for orientation of the reinforcement 30–60°, is possible in consequence of the pronounced dependenceψ1aa) only with the same values ωa/Po (α = const for all ωa). {ie810-01}

     
  3. 3.

    It was established that there exist a maximum max {ie811-01} forα = const and a correspondingly optimally damping working frequency range in dependence on the direction of the reinforcement.

     

Keywords

Frequency Dependence Fixed Level Fibrous Composite Fundamental Resonance Work Frequency Range 

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Literature cited

  1. 1.
    N. D. Stepanenko, B. N. Koveshnikov, G. M. Gunyaev, and A. F. Rumyantsev, “Anisotropy of the damping properties of composite materials,” Probl. Prochn., No. 4, 18–23 (1982).Google Scholar
  2. 2.
    E. K. Ashkenazi and É. V. Ganov, Anistropy of Structural Materials [in Russian], 2nd ed., Leningrad.Google Scholar
  3. 3.
    A. Yu. Mykita, “The effect of the orientation of the reinforcement on the damping properties of basalt-fiber reinforced plastics in flexural vibrations,” in: Basalt Fiber Composite Materials and Structures [in Russian], Kiev (1980), pp. 115–119.Google Scholar
  4. 4.
    Strength of Materials in Structural Elements under Extremal Conditions [in Russian], Vol. 1, Kiev.Google Scholar
  5. 5.
    E. S. Sorokin, “Method of experimentally determining internal friction in solids,” in: Problems of Applied Mechanics [in Russian], Issue 193, Moscow (1964), pp. 5–41.Google Scholar
  6. 6.
    V. V. Matveev and A. P. Yakovlev, “Phase method of determining characteristics of energy dissipation — the absorption coefficient with vibrations,” Inventor's Certificate No. 410295, Otkrytiya. Izobret. Promyslovye Obraztsy. Tov. Zn., No. 1, 139 (1974).Google Scholar
  7. 7.
    Ya. S. Podstrigach and B. L. Pelekh, “Composite materials based on high-strength basalt fibers: production technology and chemical properties,” in: Composite Materials and New Designs [in Russian], Kiev (1977), pp. 5–10.Google Scholar

Copyright information

© Plenum Publishing Corporation 1984

Authors and Affiliations

  • B. L. Pelekh
    • 1
  • B. I. Salyak
    • 1
  1. 1.Institute of Applied Problems of Mechanics and MathematicsAcademy of Sciences of the Ukrainian SSRLvov

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