Open AccessStress Evaluation in the Blank Critical Region During Extrusion of the Pipe Blank into the Hole
Author(s) -
Sergey B. Maryin,
Ivan K. Andrianov,
Vadim V. Chernomas
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2096/1/012207
Subject(s) - blank , extrusion , finite element method , stress (linguistics) , materials science , die (integrated circuit) , boundary value problem , structural engineering , mechanics , composite material , engineering , mathematics , physics , mathematical analysis , linguistics , philosophy , nanotechnology
The study assessed the stress state of the pipe blank in the process of extrusion into the hole. A finite element formulation of the research problem with the setting of boundary conditions in displacements and surface loading conditions is presented. The calculation of the workpiece was carried out in an elastic formulation using the Nastran engineering analysis application. The assessment of the stress state in the critical region is presented in two approximations with a thickening of the grid in the stress focus area. Based on the results of the distribution of equivalent stresses, an assessment of the unevenness of the stressed state of the workpiece was carried out. The presented study is important because it allows us to predict the appearance of defects in the process of forming a pipe billet during extrusion into a hole, to evaluate the power loading mode.