Stress Relaxation in Viscoelastic Materials

Part 1 The foundations of the theory of stress relaxation: model representations the linear theory of heredity the non-linear theory of viscoelasticity the non-linear theory of creep empirical formulae for stress relaxation curves stress relaxation calculation form creep curves. Part 2 Determination of relaxation characteristics: parameters of stress relaxation equation for a standard body with a single relaxation time parameters of Maxwell's non-linear equation parameters for Rabotnov's fraction-exponential function parameters of a flexible structure function Rzhanitsyn's kernel parameters parameters of the Kohlraush-slonimsky equation. Part 3 Machines, instruments and devices for studying stress relaxation: methodological aspects of measuring stress relaxation in isothermal conditions compensating devices installations with a rigid dynamometer devices for measuring stress relaxation devices for measuring stress relaxation in complex stress state conditions special purpose complex installations. Part 4 Optimization of experiments at studying stress relaxation. Part 5 Structural effect on stress relaxation: stress relaxation versus chemical structure of materials structure and relaxation properties of polymers. Part 6 Influence of outer effects on stress relaxation: incipient deformation loading velocity temperature liquid medium irradiation vibration friction and wear long-term storage. Part 7 Prediction of longevity at stress relaxation. Part 8 Calculation of the construction elements made of viscoelastic materials for operation at the stress relaxation: stressed state of a viscoelastic ring with an account of friction and wear calculation of the design elements operating under loading regimes between creep and a relaxation calculation of a seal from a viscoelastic material calculation of a viscoelastc rod immersed into a liquid medium under axial loading.