Abstract
This paper deals with distortion of square sectioned rigid-perfectly plastic blocks compressed between two rigid flat tools. Deformation is analysed utilising a velocity field, described by trigonometric series. The velocity field is made admissable by the relation between coefficients in the series, which describes velocities in three orthogonal directions. An approximate velocity field is obtained by minimising the energy function. The shapes resulting from non uniform deformation, due to tool/workpiece friction, strain distribution and working loads can be obtained by numerical calculation. It is discovered that, due to friction, the edges of the workpiece/tool contact surface can become either concave or convex, according to the width to height ratio of the workpiece. The type of velocity field described here should be applicable to a wide range of metalforming processes.
Preview
Unable to display preview. Download preview PDF.
References
R. SAGAR and B. L. JUNEJA, An Upper Bound Solution for Flat Tool Forging taking into account the Bilging of Sides. Int.Journal Machine Tool Design and Research, Vo1.19 pp 253–258, 1978.
P. BRAUN-ANGOTT and B. BERGER, An Upper Bound Approximation for Spread and Pressure in Flat Tool Forging. Numerical Methods in Industrial Forming Processes, pp165–174, 1982.
T. WADA and T. A. DEAN, An Energy Method Analysis of Distorsion in Plane Strain Compression. To be published.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Copyright information
© 1985 Department of Mechanical Engineering University of Birmingham
About this chapter
Cite this chapter
Wada, T., Dean, T.A. (1985). An Energy Method Analysis in Three Dimensions of the Compression of a Square Sectioned Block Between Rigid Flat Tools. In: Tobias, S.A. (eds) Proceedings of the Twenty-Fifth International Machine Tool Design and Research Conference. Palgrave, London. https://doi.org/10.1007/978-1-349-07529-4_59
Download citation
DOI: https://doi.org/10.1007/978-1-349-07529-4_59
Publisher Name: Palgrave, London
Print ISBN: 978-1-349-07531-7
Online ISBN: 978-1-349-07529-4
eBook Packages: EngineeringEngineering (R0)