Open AccessThe clamps of sheet blank movement trajectory simulation under the shell part stretch forming process
Author(s) -
В. А. Михеев,
А. Ф. Гречникова,
Roberto de Alvarenga,
M M Demidova
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1181/1/012016
Subject(s) - blank , clamping , shell (structure) , movement (music) , position (finance) , kinematics , bending , diagram , deformation (meteorology) , process (computing) , geometry , trajectory , materials science , mechanical engineering , engineering drawing , structural engineering , computer science , engineering , physics , composite material , mathematics , acoustics , classical mechanics , finance , database , economics , operating system , astronomy
The main object for analyzing the results of modeling and optimizing the shaping method by the skin is the graphs of the change in thickness at characteristic or selected points on the surface of the shell of double curvature. The article discusses two variants of the method, which have the same cyclic diagram of step movements of the main and auxiliary working cylinders of the stretch-tightening press RO-630-11. Both options contain kinematic techniques that implement the following two effects. The first is the effect of isometric bending of the shell surface after unloading the sheet blank at the third step motion of the press according to the cycle diagram. The second is the effect of the forced position of a flat and sufficiently long sheet blank in rectilinearly arranged discrete clamping devices of the press. This provided a plastic deformation of the middle part of the sheet blank without localizing the thinning deformation and the alignment of its values in different zones of the sheet blank.