How can we calculate compressive stress in case of a forging process?
Is there any formula that can be employed for calculation of compressive stress uding initial and final dimensions of a forged cylindrical specimen?
I think that this research can help you "Fereshteh-Saniee F., Fatehi-Sichani F., “An investigation on determination of flow
curves at room temperature and under forming conditions”, Journal of Materials
Processing Technology, Vol. 177, pp. 478-482, 2006."
the most influence in a forging process is the
friction. When the compression load is applied, the workpiece begins to deform.
Once above the elastic behavior of the material, the workpiece is deformed
uniformly. In this portion of the deformation, when the height is reduced, the area
increases uniformly along the same. In this case, the stress and strain are calculated
directly. In this moment is not so easy to calculate the stress and
strains. To solve this problem, it is used a correction factor of the curve (FereshtehSaniee
& Fatehi-Sichani, 2006).
Do you can find the answer, for example, in "Metal forming practise" from Heinz Tschaetsch.
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