Open AccessЛокализация деформации в решетчатых структурах 3D-печатных образцов стали 03Х17Н14М2
Author(s) -
Denis G. Firsov,
Stepan Konev,
Oleg N. Dubinin,
Stanislav A. Evlashin,
И. В. Шишковский
Publication year - 2020
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2020.14.49658.18329
Subject(s) - lattice (music) , poisson distribution , transverse plane , materials science , modulus , deformation (meteorology) , poisson's ratio , plasticity , digital image correlation , geometry , condensed matter physics , composite material , physics , mathematics , structural engineering , acoustics , statistics , engineering
The digital image correlation approach was used to study the deformation behavior of 3D samples under compression conditions, created by the selective laser melting method with lattice structures made of 03X17H14M2 steel. The space-temporal patterns of strain localization of transverse - εxx and longitudinal - εyy deformations of actual types of topological structures have been studied. It was shown that it is possible to reduce the relative density by 20% for 3D printed samples with lattice G-structure and cell sizes of 1.5 and 3 mm. However, plasticity disappears, the Young's modulus decreases by an order of magnitude, and the Poisson's ratio doubles in comparison with solid 3D parts.