J. Phys. IV France 110 (2003) 263
Dynamic upsetting and failure of metal cylinders: Experiments and analysisD.D. Radford1, S.M. Walley1, P. Church2 and J.E. Field1
1 PCS Group, Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, U.K.
2 QinetiQ Fort Halstead, Sevenoaks, Kent TN14 7BP, U.K.
By giving careful thought to the design of the force transducer, a dropweight machine bas been constructed capable of giving mechanical data of comparable accuracy to a split Hopkinson pressure bar. This has proved particularly useful in deforming large cylinders of hard metals to large plastic strains at high strain rates (ca. 500 to 1000 s -1). In conjunction with high-speed photography and finite element analysis, this device is proving to be a valuable stringent validation test for advanced constitutive models.
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