Results 1 to 10 of about 99,891 (264)

Simplified Theory of Plastic Zones

2017
For a life prediction of structures subjected to variable loads, frequently encountered in mechanical and civil engineering, the cyclically accumulated deformation and the elastic-plastic strain ranges are required. The Simplified Theory of Plastic Zones (STPZ) is a direct method which provides the estimates of these and all other mechanical quantities
openaire   +1 more source

Track treeing mechanism and plastic zone in solid Part 1: Initial development of plastic zone

Radiation Measurements, 2008
After neutron exposure and chemical etching in advance, latent tracks of recoil nucleon develop into pits on CR39 surface. During electrochemical etching, plastic zone is formed at top of pits. Some pits develop into tree cracks in the initial stage of plastic zone development.
openaire   +1 more source

Interaction of lateral cracks and plastic zones

Journal of Applied Physics, 1990
A computational method is developed for analyzing interactions between near-surface lateral cracks and residual stresses due to localized plastic zones. The latter are approximated as either prismatic or shear dislocation dipole pairs. Two-dimensional plane-strain conditions are assumed.
S.-H. L. Tu, R. O. Scattergood
openaire   +1 more source

Plastic Zones at a Fatigue Crack Tip

Journal of Failure Analysis and Prevention, 2019
Nanoindentation measurements are carried out in the fatigue plastic zone in the 2024 T351 alloy. It is shown that variations in hardness, plastic work and plasticity index show typical evolution permitting the identification of cyclic and monotonic plastic zones. The measured values are comparable with theoretical estimations.
Gwider, Albashir, Ranganathan, Narayanaswami   +1 more
openaire   +2 more sources

Plastic zone boundary and Poisson’s ratio depending on plastic loosening

Physical Mesomechanics, 2013
A more accurate determination of the plastic zone boundary for plane strain and plane stress state is proposed. The plastic zone boundary is determined with regard to plastic loosening, given exact stress distribution and Schleicher yield criterion. The presence of mean normal stress in the Schleicher criterion ensures uniform expansion of the plastic ...
openaire   +1 more source

The crack tip plastic zone

1982
According to the elastic stress field solutions discussed in the previous chapter a stress singularity exists at the tip of an elastic crack. In practice, materials (especially metals) tend to exhibit a yield stress, above which they deform plastically.
openaire   +1 more source

Deflexions of Elastic-Plastic Beams at Finite Spread of Plastic Zones

1981
Influence of plastic zones on deflexions of elastic plastic beams is studied. Methods for displacement evaluation and bounding are proposed employing the Betti reciprocity theorem when distorsion field due to plastic deformation appears in finite zones. Comparisons are made with experiments under monotonic as well as variable loading.
Stanisław Dorosz, Antoni Sawczuk
openaire   +1 more source

Determine the unique constitutive properties of elastoplastic materials from their plastic zone evolution under nanoindentation

Mechanics of Materials, 2022
Xu Long, Ziyi Shen, Yutai Su
exaly  

Energy-based prediction of volume loss ratio and plastic zone dimension of shallow tunnelling

Computers and Geotechnics, 2020
Qian Fang, Dingli Zhang, Liu Xiang
exaly  

THE VISUALIZATION OF ELASTIC-PLASTIC ZONES

Experimental Techniques, 1994
openaire   +1 more source