ratchet

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ratchet

1. a device in which a toothed rack or wheel is engaged by a pawl to permit motion in one direction only
2. the toothed rack or wheel forming part of such a device

ratchet

[′rach·ət]
(design engineering)
A wheel, usually toothed, operating with a catch or a pawl so as to rotate in only a single direction.
References in periodicals archive ?
Based on their framework, a modified viscoelastic-plastic model was proposed in this paper to describe the uniaxial ratcheting behavior of PC under tension-tension cyclic loading.
For ratcheting, the deformation accumulates successively along the direction of mean stress during the cyclic loading process.
Because of the ratcheting mechanism the EZ Spanner[TM] enables firefighters to open the most obstructed fire hydrants faster.
The current work aims to study the multiaxial ratcheting behavior of ABS.
They attached a triptycene molecule, which looks like a three-bladed fan, to a helicene molecule, which acts as a ratcheting mechanism.
Ratcheting behavior is a cyclic accumulation of inelastic deformation occurred in the materials subjected to a cyclic stress loading.
Time-dependent ratcheting of polymer materials is of great importance in the safety design and life assessment of polymer structure components.
Most of rubber components endure cyclic loading during their service, and a nonzero mean stress during cyclic loading may cause an accumulation of strain, which is known as ratcheting phenomenon and ratcheting strain is the strain accumulation of material under unsymmetrical cyclic stress (1).
The ratcheting deformation (cyclic creep) accumulates from the very beginning of cyclic loading.