Determination of Flanging Parameters and Length of Screwing in Producing Holes by the Method of Thermal Drilling in Thin-Sheet Metal

2019 ◽  
pp. 59-68
Author(s):  
P. V. Shalamov ◽  
I. A. Kulygina ◽  
A. N. Yasnitsky
Keyword(s):  
Sheet Metal ◽  
Thin Sheet ◽  
Thermal Drilling ◽  
Thin Sheet Metal

scholarly journals МОДЕЛЮВАННЯ ПРОЦЕСІВ ВИРУБКИ-ПРОБИВКИ ПЕРЕДАВАЛЬНИМИ СЕРЕДОВИЩАМИ

2021 ◽  
pp. 104-111
Author(s):  
А. Н. Застела ◽  
В. В. Борисевич
Keyword(s):  
Sheet Metal ◽  
Complex Geometry ◽  
Thin Sheet ◽  
Manufacturing Cost ◽  
Forming Process ◽  
Sheet Metal Stamping ◽  
Metal Stamping ◽  
Thin Sheet Metal

During improvement of the quality of products and reducing its cost, sheet metal stamping production, being the basis for the aerospace industry, should more intensively introduce modern production technologies, especially design. There are a large number of factors influencing the stamping process (especially parts with complex geometry), more comprehensive consideration of which would allow to optimize such processes, thereby reducing the manufacturing cost and improving the  quality. Currently the processes of forming and separation of complex parts by  of an elastic pad are of interest from the point of view of optimization and the final determination of the nature of the behavior of the material. This includes the refinement of such parameters as the maximum permissible thinning, the strength of the die. Clarification of these and other parameters will significantly reduce energy required. Determination of these and other parameters of sheet metal stamping is possible due to application of the modern analysis methods. For numerical studies in the sheet stamping production, the variational method or FEM is the most suitable. Computer modeling makes it possible to investigate the behavior of the material, the kinematics of the workpiece movement during forming process, select the correct loading scheme for the workpiece, and also makes it possible to consider several options for the location of the workpiece in the die, which is very important for  stamping thin sheet metal blanks. It provides a significant reduction of the time and costs for carrying out natural experiments, and decrease of technological preproduction preparation of sheet metal stamping. The development of a mathematical model based on the FEM makes it possible to determine not only the required parameters of the process, but also to consider the forming process during its certain stages, to determine the stress-strain state, indicating at the same time the problem zones of excessive thinning, loss of stability, the need to apply a die with a back pressure for cutting of thin sheet metal blanks. It allows to evaluate the quality of a ready product according to the calculated parameters, to use the results obtained for the design of elastic pad

Investigation of a Geometrical Base Parameter Affecting on Bending Quality in a Thin Sheet Metal

2017 ◽  
Vol 728 ◽  
pp. 66-71
Author(s):  
Aran Blattler ◽  
Maitri Kamonrattanapisud ◽  
Thanasan Intarakumthornchai ◽  
Yingyot Aue-u-Lan
Keyword(s):  
Sheet Metal ◽  
Thin Sheet ◽  
Fem Simulation ◽  
Roll Forming ◽  
Forming Process ◽  
Bending Process ◽  
Thin Sheet Metal ◽  
Bending Radius

A geometrical base parameter is investigated to determine the effect on a bending quality of a thin sheet metal for a roll forming process. This parameter is usually used as a criterion for the quality control of incoming materials for the bending process. This study was conducted by using a FEM simulation. The determination of the geometrical base parameter is considered as an appropriate and unique characteristic for each type of materials. To find this geometrical base parameter the dimensions of the workpiece must be measured while loading. The sensitivity of the bend allowance of a sheet metal is dependent on this geometrical base parameter. The high geometrical base parameter is led to indicate the elongation and the strength of the material. The principles of the geometrical base parameter are dependent on several factors, such as the bending angle, bending radius, material thickness, bend allowance, bending types and mechanical properties of materials. The outcomes of this study could provide the information used to enhance the bend quality of the sheet metal.

Comparability of structured and flat reference specimens made of thin sheet metal

2015 ◽  
Vol 57 (6) ◽  
pp. 567-573 ◽  
Author(s):  
Fedor Kazak ◽  
Sabine Weiß
Keyword(s):  
Sheet Metal ◽  
Thin Sheet ◽  
Thin Sheet Metal ◽  
Reference Specimens

Experimental and Numerical Analysis of Blanking for Thin Sheet Metal Parts

2001 ◽  
Vol 4 (3-4) ◽  
pp. 319-333
Author(s):  
Vincent Lemiale ◽  
Philippe Picart ◽  
Sébastien Meunier
Keyword(s):  
Numerical Analysis ◽  
Sheet Metal ◽  
Thin Sheet ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Thin Sheet Metal

Damage evolution in creep bulging of thin sheet metal

2000 ◽  
Vol 42 (2) ◽  
pp. 163-184
Author(s):  
J. Tirosh ◽  
L. Rubinski ◽  
A. Shirizly ◽  
D.P. Harvey II
Keyword(s):  
Sheet Metal ◽  
Damage Evolution ◽  
Thin Sheet ◽  
Thin Sheet Metal

Size effects in thin sheet metal forming and its elastic–plastic constitutive model

2007 ◽  
Vol 28 (5) ◽  
pp. 1731-1736 ◽  
Author(s):  
Linfa Peng ◽  
Fang Liu ◽  
Jun Ni ◽  
Xinmin Lai
Keyword(s):  
Constitutive Model ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Size Effects ◽  
Metal Forming ◽  
Thin Sheet ◽  
Elastic Plastic ◽  
Thin Sheet Metal
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