Fine-blanking is a special forming process in which the material is subjected to a complicated stress condition. Although some researchers have studied the theoretical deformation of the process, there still exists a lot of uncertainty to be clarified. This paper presents a direct application of large deformation theory in two-dimensional deformation to axi-symmetrical deformations. It is convenient to measure the coordinates of the deformed grid pattern and determine the mechanical parameters such as the rigid-body rotation and the directions and magnitudes of the principal strains. Therefore, a further and practical investigation, employing large deformation theory, of the fine-blanking process is presented in this paper, using the measured data after analysis. In this investigative work, it is revealed that when the clamping force increases the rigid body rotation increases. Also, when the die clearance decreases the rigid-body rotation increases. As a result, it is indicated that the rigid-body rotation does significantly affect the strain and the quality of the sheared edges of fine-blanked parts.
- Large deformation theory
- Metal forming
ASJC Scopus subject areas
- Ceramics and Composites
- Computer Science Applications
- Metals and Alloys
- Industrial and Manufacturing Engineering