A new approach to visioplasticity in dynamic plane upsetting Original Research Article

A new approach to visioplasticity in dynamic plane upsetting Original Research Article Pages 1689-1700 J.P Wang Close preview | Related articles | Related reference work articles Abstract | Figures/Tables | References Abstract A new numerical approach to analyze the stress distributions in the plane-strain upsetting process is developed. In this procedure, the generalizing stream function with the velocity parameters used to find the optimal flow pattern is produced first, and then the velocity and strain-rate fields can be obtained. From the strain-rate fields calculated, the stress fields can be found by the constructed slip-lines from Cauchy–Riemann equations. Along these slip-lines, the stress fields can be calculated easily from Hencky equations. The results show that this method presents a good and reasonable solution compared with the slab method and traditional visioplasticity. Article Outline 1. Introduction 2. The model of stream function 2.1. Velocity field from stream function 2.2. Experimental determination of the flow field 2.3. The generalizing stream-function used for fitting 2.4. Optimization with velocity parameters 3. The model of the slip-line 3.1. The constructed model of slip-line field by Cauchy–Riemann equations 3.2. Stress calculation 4. Results and discussion 5. Conclusions References