By R. Ganesh Narayanan, Uday Shanker Dixit
This edited ebook comprises prolonged examine papers from AIMTDR 2014. This comprises fresh study paintings within the fields of friction stir welding, sheet forming, becoming a member of and forming, modeling and simulation, effective prediction techniques, micro-manufacturing, sustainable and eco-friendly production matters and so on. it will turn out invaluable to scholars, researchers and practitioners within the box of fabrics forming and manufacturing.
Read Online or Download Advances in Material Forming and Joining: 5th International and 26th All India Manufacturing Technology, Design and Research Conference, AIMTDR 2014 PDF
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Extra resources for Advances in Material Forming and Joining: 5th International and 26th All India Manufacturing Technology, Design and Research Conference, AIMTDR 2014
The design of tooling (die and punch) for complicated shapes is very difﬁcult and costly. In incremental forming technique, only a DT is required for deforming the sheet metals. There are four basic elements of an ISF process as shown in Fig. 1—a sheet metal, a blank holder, a single-point forming tool or DT, and CNC machine. The shape of DT may be hemispherical. The design of DT is quite simple and economical. A CNC controller having capability for controlling individual 3 axes can be used to control the movements of the DT.
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. 3 Development of Single-Point Incremental Forming Machine The major elements of ISF are identiﬁed as follows: (i) a sheet metal blank, (ii) a blank holder, (iii) a single-point forming tool or DT, and (iv) CNC machine.
Inverse analysis provides the material parameters σ0, n, m, and γ and the coefﬁcient of friction μ of different materials, viz. AISI steel, copper, and aluminum alloy AI6061-T6 as given in Table 4. , in 3–4 iterations for all three different materials of strip. The convergence depends on the initial hypercube size of the unknown parameters. Starting with a large range of domain is better, but the number of iterations required for convergence will be large. Figures 8 and 9 show the variation of flow stresses with strain at the estimated and the actual material properties for work material (steel) of strip.
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