plastic zone


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plastic zone

[′plas·tik ‚zōn]
(geology)
A region located adjacent to the rupture zone of an explosion crater and at an increased distance from the shot site, differing from the rupture zone by having less fracturing and only small permanent deformations.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Caption: Figure 13: The change process of the plastic zone with the different pore water pressure.
The safety factor and plastic zone distribution map for different water depths under seismic loading is shown in Figure 3.
These plastic zone sizes are significantly smaller than the crack length, the uncracked ligament, and the specimen thickness.
The equivalent plastic zone concept is introduced, which can be expressed as follows:
Evolutionary Laws of Morphology for Plastic Zone around Deep Roadways under Mining-Induced Pressure
When the axial force is considered as the middle principal stress, the elastic modulus and Poisson's ratio in the plastic zone of the deformation and stress evolution can be represented by a piecewise linear function as follows:
The deformation and plastic zone surrounding the roadway with various ground stress conditions are analyzed, and the outburst tendency in the front is studied.
The TOM micrographs indicate no plastic zone for the neat resin, while a big plastic zone was observed for the blend containing CSR particles with 20 wt% MMA units in their copolymer shell.
According to the research [24-27], the stress region of both the postexcavation coal mine roadway and the loaded specimen is divided into the elastic zone and plastic zone with ring-shaped distribution and other zone, and thus, the first response time of the strain measurement point is presented ring-shaped distribution basically.
Along the boundary between the elastic and plastic zone, the stress boundary conditions should be met at the same time; that is, there is [mathematical expression not reproducible] when the radius r = R; the plastic radius R is shown as follows:
In this approach, the potential plastic zone is divided into a finite number of concentric rings and it is assumed that all the strength parameters are linear functions of deviatoric plastic strain.
A second theory was proposed and observed that might provide a method to better locate growing cracks in structures by accounting for the presence of the plastic zone in the vicinity of the crack tip.