Browsing by Author "Ershadi, Meysam Najafi"
Now showing 1 - 1 of 1
- Results Per Page
- Sort Options
Item Experimental and numerical investigation of the frictional forces in equal channel angular pressing(Bursa Uludağ Üniversitesi, 2021-03-28) Eskandarzade, Mehdi; Ershadi, Meysam NajafiThe main limitation of the Equal Channel Angular Pressing (ECAP) isthevery high required punching force for pushing the metallic sample to next channel. Frictional forces in ECAP process are responsible for very high required punching force. The participation of exit and entrance channels in total friction force has not been studied experimentally hitherto. Through the current study, two ECAP dies (1) with two channels (normal ECAP die) and (2) with only one channel (the exit channel was missed) were manufactured. Three-dimensional finite element analysis was conducted. The effect of the exit channel on the total punching force, sample geometry, and grainrefinement rate were investigated experimentally and numerically. According to the results, the exit channel has a considerable effect on the amount of minimum required punching force and the grain refinement in ECAP process. The comparisons showed that, the trend of the results from experimental investigations were in good agreement with numerical analysis.