Abstract
The changes in internal diameter that occur when a hollow disk, or ring, is plastically deformed by axial compression have been proposed as a method for measuring interface friction during metal forming. The adoption of this test method has been delayed because the three-dimensional strains in such rings are not known.
This paper describes how an experimental method using photoplastic simulation was used to obtain the three-dimensional strains for a particular ring geometry. It presents proot of highly nonuniform strains and also shows that the division between flow inward and flow outward occurs at different radii through the thickness of the ring.
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H.A. Gomide (SESA Member) was formerly associated with Iowa State University, Department of Engineering Science & Mechanics
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Gomide, H.A., Burger, C.P. Three-dimensional strain distributions in upset rings by photoplastic simulation. Experimental Mechanics 21, 361–370 (1981). https://doi.org/10.1007/BF02324797
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DOI: https://doi.org/10.1007/BF02324797