FIELD: metal forming.
SUBSTANCE: invention relates to a method for estimating the length of a fibre in a flat deformed state. The method for estimating the fibre length of a workpiece in a flat deformed state consists in the fact that the workpiece is deformed within the framework of the investigated metal forming process. In this case, the main parameters of the process under study are fixed: the speed of movement and/or rotation of the deforming and auxiliary tools, the dimensions of the deforming and auxiliary tools, the temperature of the workpiece before deformation, the dimensions of the workpiece before deformation. Then, tensile tests are carried out on samples from the material of the undeformed workpiece. After that, computer simulation of the investigated metal forming process is carried out in the computing environment of finite element analysis using data. Then, using computer-aided design, the necessary measurements of the fibre length of the workpiece are made in a flat deformed state.
EFFECT: increase in the accuracy of forecasting the shape change and revealing its features due to the quantitative assessment of the fibre length of the workpiece and the possibility of estimating its shape at any stage of the studied metal forming process.
1 cl, 6 dwg
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