Definitions for Ratcheting
ratch·et·ing

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1. Ratcheting

   In a famous article written by J. Bree in 1967, the phenomenon of ratcheting is described as "Unsymmetric cycles of stress between prescribed limits will cause progressive ‘creep’ or ‘ratchet(t)ing’ in the direction of the mean stress". In continuum mechanics, ratcheting is a behavior in which plastic deformation accumulates due to cyclic mechanical or thermal stress. Ratcheting is a progressive, incremental inelastic deformation characterized by a shift of the stress-strain hysteresis loop along the strain axis. When the amplitude of cyclic stresses exceed the elastic limit, the plastic deformation that occurs keep accumulating paving way for a catastrophic failure of the structure. Nonlinear kinematic hardening, which occurs when the stress state reaches the yield surface, is considered as the main mechanism behind ratcheting. Several factors influences the extent of ratcheting including the load condition, mean stress, stress amplitude, stress ratio, load history, plastic slip, dislocation movement, and cells deformations.This effect is represented in terms of the Bree diagram. To simulate such a model, incremental plastic deformation terms are added to general cyclic stress-strain equations. Multiple models are proposed to simulate ratcheting, such as Chaboche, Ohno-Wang, Armstrong–Frederick, etc.Ratcheting is a significant effect to be considered to check permanent deformation in systems which undergoes a cyclic loading. Common examples of such repetitive stresses include sea waves, road traffic, and earthquakes. Initially it was studied to inspect the permanent deformation of thin, nuclear fuel cans with an internal pressure and temperature gradient while undergoing repetitive non-zero mean stresses. References

Anagrams for Ratcheting »

1. chattering

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Numerology

1. Chaldean Numerology

   The numerical value of Ratcheting in Chaldean Numerology is: 6

2. Pythagorean Numerology

   The numerical value of Ratcheting in Pythagorean Numerology is: 6

Examples of Ratcheting in a Sentence

1. Malcolm Chalmers:

   One of the few objectives that the Russian and US leadership share at the moment is avoiding a direct conflict between the two powers, russia knows that a conventional confrontation with NATO would be over very quickly for them. However, there is some sense in ratcheting up the idea that it is willing to take that risk, if it means it can extract more concessions from the West.

2. John Hannah:

   It should not happen a third time without Kim Jong understanding that -- while diplomacy might continue -- there will be consequences in terms of a ratcheting up of the maximum pressure campaign, and certainly no prospect of another summit with President Donald Trump.

3. Israeli Prime Minister Benjamin Netanyahu:

   I think there's a third alternative, and that is standing firm, ratcheting up the pressure until you get a better deal.

4. Paul Carroll:

   If you do this kind of ratcheting( up) of rhetorical tensions but also sending military hardware into the region, if you do that absent of any kind of offramp or door or window for the North Koreans to consider walking through and reengaging in any sort of discussions, bad things are going to happen.

5. Kristina Hooper:

   It could be incredibly damaging to the global economy. The risk of a recession has gone up because of the ratcheting up of the trade war.

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References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Ratcheting