METHOD FOR CALCULATING THE FORMING LIMIT OF A PIPE BLANK UNDER EXPANSION TAKING INTO ACCOUNT NONLINEAR PLASTICITY

In this paper, we consider a method for determining the limiting expansion ratio of cylindrical pipes using conical accessories that allows a fairly accurate calculation of the moment of fracture of a pipe blank taking into account the nonlinear plasticity of the material and the change in thickness...

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Bibliographic Details
Published in:Journal of applied mechanics and technical physics 2023-08, Vol.64 (4), p.721-727
Main Authors: Feoktistov, S. I., Andrianov, I. K.
Format: Article
Language:English
Subjects:
Applications of Mathematics
Classical and Continuum Physics
Classical Mechanics
Fluid- and Aerodynamics
Forming limit diagrams
Mathematical analysis
Mathematical Modeling and Industrial Mathematics
Mechanical Engineering
Physics
Physics and Astronomy
Pipes
Plastic properties
Strain
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Summary:In this paper, we consider a method for determining the limiting expansion ratio of cylindrical pipes using conical accessories that allows a fairly accurate calculation of the moment of fracture of a pipe blank taking into account the nonlinear plasticity of the material and the change in thickness. The method combines the use of forming limit diagrams to predict the fracture of the blank and the method of variable elasticity parameters to determine the stress-strain state.
ISSN:0021-8944
1573-8620
DOI:10.1134/S0021894423040193