Stress relaxation

In materials science, stress relaxation is the observed decrease in stress in response to the same amount of strain generated in the structure. This is primarily due to keeping the structure in a strained condition for some finite interval of time and hence causing some amount of plastic strain. This should not be confused with . Loading, Creep, and Unloading.

Stress Relaxation and Creep.

An electrical connector must maintain good contact force throughout the functional life of the . Many translated example sentences containing stress relaxation – German- English dictionary and search engine for German translations. As indicated in the accompanying diagram, the creep of a material can be divided into three stages. First stage, or primary creep, starts at a rapid rate and slows with time. Second stage (secondary) creep has a relatively uniform rate. Third stage (tertiary) creep has an accelerating creep rate and . Meaning, pronunciation, translations and examples.

Viscoelastic stress relaxation in human skeletal muscle.

McHugh MP(1), Magnusson SP, Gleim GW, Nicholas JA. Although it has been experimentally shown that the addition of short-fibers slows the stress relaxation process in composites, the underlying phenomenon is complex and not well understood. Previous studies have proposed that fibers slow the relaxation process by either hindering the movement of nearby . The initial stress would be 1 when the time equals zero. However, because the curves shown are plotted on a logarithmic scale, there is no zero point. As the time increases, the amount of stress remaining will fall.

Learn about stress relaxation testing and the material testing solutions we provide for stress relaxation testing. To understand this concept, the stress-strain relationships for a spring and biological tissues such as a blood vessel and bladder can be compared (see figure). When a spring is suddenly stretched (increased strain applied), the . How does a Non- Newtonian fluid behave when under stress? And what happens when the force causing the stress is removed? One would expect that purely elastic solids when com- bined with viscous fluids would be adequate in modeling Non-Newtonian fluids.

Kontext von „ stress relaxation “ in Englisch-Deutsch von Reverso Context: Copper alloy having bendability and stress relaxation property. A prescribed displacement or strain is induced in the specimen and the load drop-off as a function of time is measured. Various viscoelastic theories are available that permit the translation of stress - relaxation test data into predictions about the creep behaviour of the . These tests are similar to creep tests in which a constant force or stress is applied to a specimen and elongation is monitored over time.

Although the mechanisms responsible for creep are different than those responsible for stress relaxation , both kinds of tests are conducted slowly, typically over a period of hours or days,.

In a stress relaxation experiment, a sample is rapidly strained to a fixed length at constant temperature and the stress is recorded as a function of time. Since the length after stretching the sample is kept constant for the entire duration of the experiment, no macroscopic movement of the test . ABSTRACT: Several methods have . We present an extensive set of simulation for the stress relaxation in equilibrium and step-strained bead-spring polymer melts. The data allow us to explore the chain dynamics and the shear relaxation modulus, $G(t)$, into the plateau regime for chains with $Z=40$ entanglements and into the . Tension decay following stretch ( stress relaxation ) has been studied in resting long-fibred smooth and striated muscles.