Nonlinear viscoelastic behavior of flexible cellular plastics refined rod model

• Autorzy: Chernous D. A. , Shilko S. V. , Kanyok D. A. , Pleskachevsky Yu. M.
• Języki publikacji: EN

Abstrakty

EN

A new technique of modelling nonlinear viscoelastic behavior of low-density flexible foams including cellular plastics used in advanced implants, namely, artificial analogs of periodont of the dental system and trabecular bones of the skeletal system has been developed. The material microstructure is modeled by a rod structure with chaotically oriented cubic cells. Young's modulus and critical strain (i.e., the case of stability loosing) dependence on the solid state phase fraction of flexible cellular plastics has been investigated. The dependences of tangential stress on shear strain, hydrostatic pressure on volume strain and axial stress on longitudinal deformation with taking into account solid phase viscosity at a given strain rate have been obtained for the simulated materials. The numerical results led to the conclusion that at a certain compression rate the transversal strain factor of a material becomes negative.

Słowa kluczowe

EN

flexible foams; cellular structures; implants; large rod deflections; viscoelastic behavior; structural unit

PL

implanty; struktura komórkowa; lepkosprężystość

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2003
• Tom: Vol. 8, no 1
• Strony: 27--41
• Opis fizyczny: Bibliogr. 22 poz., wykr.

Twórcy

autor

Chernous D. A.

• V.A. Belyi Metal-Polymer Research Institute, Belarussian Academy of Sciences 32A Kirov Str., 246050 Gomel, BELARUS

autor

Shilko S. V.

• V.A. Belyi Metal-Polymer Research Institute, Belarussian Academy of Sciences 32A Kirov Str., 246050 Gomel, BELARUS

autor

Kanyok D. A.

• V.A. Belyi Metal-Polymer Research Institute, Belarussian Academy of Sciences 32A Kirov Str., 246050 Gomel, BELARUS

autor

Pleskachevsky Yu. M.

• V.A. Belyi Metal-Polymer Research Institute, Belarussian Academy of Sciences 32A Kirov Str., 246050 Gomel, BELARUS

Bibliografia

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