In this paper, a new equidistant filling theory based on the level set function and corresponding numerical algorithm dynamic finite difference method were proposed. Firstly, closed curve is defined as zero-value contour of function. Then, equation, partial differential was built to get function, proposed solve Secondly, three types cross sections, simple polygon, multi-island multi-hole used t...

Crankshafts are the most important loaded components in the case of an automobile. In order to achieve required mechanical properties most of crankshafts for automobile are forged with micro alloyed steel. Usually, the shapes of crankshafts are complex, and many defects are induced during the process of crankshaft forging such as under-filling, laps and folds etc. In this work the forging analy...

Cold forging of automotive parts in high strength steel causes pressure on the die. The or heavy load reduces a die life and accuracy forged parts, so prediction more accurate helps us to design optimum dimensions process. In this report, precise frictional coefficient was measured by ring compression test predict cold upsetting steel. experimental results indicated μ about 0.19 within height r...