Determination of long-term critical loads for compressed polymer rods with nonlinear creep

Abstract

Determination of long-term critical loads for compressed polymer rods with nonlinear creep

Nikora N.I., Chepurnenko A.S., Litvinov S.V.

Incoming article date: 06.03.2015

The article provides information about method of sustainability calculation of compressed polymer rods taking into account nonlinear creep . As the law of the relationship between stress and strain is used nonlinear equation of Maxwell-Gurevich. Derived from the analysis of the resolving equations with time tends to infinity, we obtain an expression for a long critical force in the case of constant rigidity of the rod.

Keywords: nonlinear creep, rod, stability, Maxwell-Gurevich, finite difference method, long critical force, relaxation viscosity, viscoelasticity, high elasticity modulus.