References
- Kudo, H., 'An upper-bound approach to plane-strain forging and extrusion - I, II, III,' Int J. of Mech Sci, 1, pp.57-368, 1960 https://doi.org/10.1016/0020-7403(60)90030-8
- Kiuchi, M. and Shigeta, S., 'Application of Upper Bound Elemental Technique (UBET) to Asymmetric Forging Process,' J. of Jap. Soc. Technol. Plas., 22(251), pp. 1208-1214, 1981
- Avitzur, B., Metal Forming: Processes and Analysis. McGraw-Hill, pp. 52-66, 1968
- Osman, F. H. and Bramly, A. N., 'Metal Flow Prediction in Forging and Extrusion Using UBET,' Proc. 20th. MTDR conference, Birmingham, UK, pp. 51-59, 1979
- Yang, D. Y, Kim, J. H. and Lim, C. K., 'An Arbitrarily Inclined Triangular UBET Element and Its Application to Combined Forging,' J of Eng. Ind. Trans. of the ASME, Vol. 107, pp. 134-140, 1985 https://doi.org/10.1115/1.3185976
- Choi, J. C., Choi, Y, Hur, K. D. and Kim, C. H., 'A study on the forging of spur gears,' Int. J. of Mechanical Sciences, Vol. 38, No. 12, pp. 1333-1347, 1996 https://doi.org/10.1016/0020-7403(96)00012-4
- Choi, J. C., Choi, Y., Tak, S. J. and Kim, K. K., 'A Study on the Cold Forging Process of Spur Gears,' J. of KSPE, 14, 12, pp. 105-113, 1997
- Choi, J. C., Choi, Y. and Tak, S. J., 'The forging of helical gears (I): experiments and upper-bound analysis,' Int. J. of Mechanical Sciences, Vol. 40, No. 4, pp. 325-337, 1998 https://doi.org/10.1016/S0020-7403(97)00032-5
- Kiuchi, M. and Murata, Y., 'Simulation of Contact Pressure Distribution on Tool Surface by UBET,' Proc. 21st. MTDR conference, Swansea, pp. 13-20, 1980
- Christensen, P., Bay, N., Bramley, A. N. and Osman, F. H., 'Calculation of Local Surface Stresses in Drop Forging Using UBET,' Proc. 14th NAMRC, Minneapolis, USA, pp. 336-293, 1986
- Hur, K. D., Choi, Y. and Choi, I. K., 'A Study on the Drawing of Strip by Upper Bound Elemental Technique,' J. of the Korean Society for Technology of Plasticity, 12, 1, pp. 11-17, 2003 https://doi.org/10.5228/KSPP.2003.12.1.011
- Choi, Y., Yeo, H. T. and Hur, K. D., 'Upper Bound Analysis of Pressure Applied on a Tool for Metal Forming,' Int. J. of Mechanical Sciences, 2004. (투고중)
- Prager, W. and Hodge, P. G., Theory of Perfectly Plastic Solids, Chapman and Hall, London, 1951
- DEFORM-2D Version 7.0 Labs Manual