Abstract
The experimental and the theoretical researchs were performed on the cold-roll forming of metal strips to the cross section of circular arc through a set of the upper roll and the lower. From the experiment, it was found that the membraneous strain in the strip was negligibly small as compared with the bending strain. Therefore, the cold-roll forming was treated as a biaxial bending problem. The roll force and torque were analyzed by means of the strain energy method. The theoretical results were in good agreement with the experimental results.
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