| 摘要 |
PROBLEM TO BE SOLVED: To improve calculation precision by increasing/decreasing electric densities so that they are converged to a critical current density and repetitively calculating them. SOLUTION: A first method for calculating potential by means of a governing equation which does not contain electrical specific resistance for the initial step of repetitive calculation and calculating the electric densities of respective micro areas, a second method for storing the micro area whose electric density exceeds a critical current density value in a computer and continuously holding it hereafter, and a third method for obtaining the electrical specific resistance of the micro area from the electric field and the current density of the micro area when the electrical specific resistance of the micro area is zero, increasing the electrical specific resistance of the micro area whose current density exceeds the critical current density value, decreasing the electrical specific resistance of the micro area whose electric density if lower than the critical current density value, calculating potential by means of the governing equation containing electrical specified resistance, and calculating the electric densities of the micro areas again are provided. When the micro area whose electric density exceeds critical current density exists, the second and subsequent methods are repeated. When it does not exist, the electric density is considered to be converged. |
