MECHANICAL ENGINEERING AND INDUSTRIAL MANAGEMENT RESEARCH INSTITUTE
M&M Research Inc
| Research |
| 1. Evaluation of Forming Limit by the Bifurcation Theory | |
| 1-1. Comment on the conventional method to evaluate forming limit | |
| 1-2. Bifurcation theory to predict forming limit | |
| 1-3. Instability factor and forming allowance based on the stability theory | |
| 2. Constitutive Equation Applied to Bifurcation Problems | |
| 2-1. Features and problems of the normality rule | |
| 2-2. Constitutive model having a stress rate dependency | |
| 3. Mechanical theory for springback problems | |
| 3-1. Outline of a new approach to springback problem | |
| 3-2. Classification and definition of shape defects by differential Geometry | |
| 3-3. Basic mechanical theory for springback problem | |
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