initial stress in stress relaxation

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• Stress relaxation — describes how polymers relieve stress under constant strain. Because they are viscoelastic, polymers behave in a nonlinear, non Hookean fashion.Meyers and Chawla. Mechanical Behavior of Materials (1999) ISBN 0 13 262817 1] This nonlinearity is… …   Wikipedia

• relaxation time — noun the time constant of an exponential return of a system to equilibrium after a disturbance (Freq. 2) • Hypernyms: ↑time constant * * * noun 1. : the time required for an exponentially decreasing variable (as the amplitude of a damped… …   Useful english dictionary

• Stress-related disorders — Stress is a conscious or unconscious psychological feeling or physical situation which comes after as a result of physical or/and mental positive or negative pressure to overwhelm adaptive capacities.Stress is a psychological process initiated by …   Wikipedia

• relaxation phenomenon — ▪ physics and chemistry Introduction       in physics and chemistry, an effect related to the delay between the application of an external stress to a system that is, to an aggregation of matter and its response. It may occur in nuclear, atomic,… …   Universalium

• Acute stress reaction — This article is about the psychological condition sometimes called shock. For the circulatory condition, see shock (circulatory). Acute stress reaction Classification and external resources After being attacked and stabbed, Austrian empress… …   Wikipedia

• Combat stress reaction — Shell shock and shell shocked redirect here. For other uses, see Shell shock (disambiguation). Image from World War I taken in an Australian dressing station near Ypres in 1917. The wounded soldier in the lower left of the photo has a dazed… …   Wikipedia

• Viscoplasticity — Figure 1. Elements used in one dimensional models of viscoplastic materials. Viscoplasticity is a theory in continuum mechanics that describes the rate dependent inelastic behavior of solids. Rate dependence in this context means that the… …   Wikipedia

• Viscoelasticity — is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Viscous materials, like honey, resist shear flow and strain linearly with time when a stress is applied. Elastic materials strain… …   Wikipedia

• Dynamic mechanical analysis — Dynamic Mechanical Analyzer Acronym DMA Classification Thermal analysis Manufacturers Bose Electroforce Group, Mettler Toledo, Netzsch Instruments, PerkinElmer, TA Instruments, Triton Technology Ltd, Gabo Other techniques Related Isothermal… …   Wikipedia

• Creep (deformation) — For other uses, see Creep (disambiguation). v · d · e Materials failure modes Buckling …   Wikipedia

• deformation and flow — Alteration in size or shape of a body under the influence of mechanical forces. Flow is a change in deformation that continues as long as the force is applied. Gases and liquids normally flow relatively freely, while solids deform when subjected… …   Universalium