Download Advances in Material Forming and Joining: 5th International by R. Ganesh Narayanan, Uday Shanker Dixit PDF

By R. Ganesh Narayanan, Uday Shanker Dixit

This edited ebook comprises prolonged learn papers from AIMTDR 2014. This contains contemporary learn paintings within the fields of friction stir welding, sheet forming, becoming a member of and forming, modeling and simulation, effective prediction recommendations, micro-manufacturing, sustainable and eco-friendly production concerns and so on. it will end up worthwhile to scholars, researchers and practitioners within the box of fabrics forming and manufacturing.

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The stresses increase with respect to time. This is obvious due to the strain hardening. Figure 13 shows the evolution of effective strain during the process, which is increasing with time. The forming forces in X- and Y-direction are repetitive in nature. The forces in X- and Y-directions were also increased gradually. As the tool moves in Z-direction, the deforming force in Z-direction is found increasing. The force predicted in X-, Y-, and Z-directions are represented in Figs. 14, 15, and 16, respectively.

J Mech Working Technol 2:333–345 Hirschvogel M (1979) Recent developments in industrial practice of warm working. J Mech Working Technol 2:317–332 Hsu PT, Yang YT, Chen CK (2000) A three dimensional inverse problem of estimating the surface thermal behavior of the working roll in rolling process. J Manuf Sci Eng ASME 122:76–82 Huang CH, Ju TM, Tseng AA (1995) The estimation of surface thermal behavior of the working roll in hot rolling process. Int J Heat Mass Transf 38:1019–1031 Hum B, Colquhoun HW, Lenard JG (1996) Measurements of friction during hot rolling of aluminum strips.

For the case of aluminum strip material, the inverse estimated coefficient of friction and parameters of power law show the good agreement with J–C model at high strain compared to the low strain as shown in Fig. 14. 2 Inverse Estimation of Material Parameters and Coefficient of Friction for Variable Friction Case In this section, the coefficient of friction is assumed to vary with temperature. The friction coefficient is decided on the basis of forward slip measurement. The exit speed of strip is higher than the speed roll (peripheral speed of work-roll) during rolling due to reduction in strip at deformation zone.

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