Authors: A.V. Vovchenko, O.I. Katrich

Title of the article: Version of the determination workpiece forms in the die forging of a reverse calculation of deformation

Year: 2018, Issue: 1, Pages: 125-132

Branch of knowledge: Mechanical engineering and machine science

Index UDK: 621.735.001.2

DOI: 10.26730/1999-4125-2018-1-125-132

Abstract: The perfected calculating approach based on solving reverse tasks of process die forging is characterized by perspective peculiarities. Both the problems of realizing reverse modeling that have already been solved and are still being solved are considered. They allow to perform calculations in an automated mode by means of software. Nowadays such built-in functions that are applied in technological engineering are not typical of modern licensed software used for modeling. Topicality. It is defined by a considered problem of investigating the task aiming at restoring the configuration of rational workpiece on the shape of forgings, by means of reverse calculating form altering. In reverse modeling there appeared the problem of affecting the obtained workpiece by the conditions of stationarity of a special (singular) point in reverse calculations. This problem is the aim of the study. Method of research. By means of boundary element modeling there were determined the conditions characterizing cinematics of moving a special (singular) point when solving the reverse task of form altering the process of settling. The calculating approach is based on approximate correspondence of the solid substance and flowing of ductile liquid deformation process which are also regarded as the task for determining the meaning of free surface crookedness. Results of the research. The solution determines the rational meanings of boundary elements lag angle from the tool. These meanings are admitted from the condition of forming evenness and deformed state of the workpiece in dependence of terms discrediting the task. The obtained correlations define the connection of forming boundary rounding radius with the terms of discrediting calculated task in the field of special (singular) point.

Key words: die forging the inverse task of forming algorithm of reverse loading direct boundary element method (MBE)

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