The Application of 12-DOF Element for Increasing the Accuracy in Electric-Field Calculation

Abstract

This paper presents the accuracy enhancement for electric field calculation by applying 12-DOF elements to the surface charge method. The electric field calculation on a dielectric spherical under the uniform field is selected as the case study in this paper. By calculating the electric field on Z-axis. The results show that using 12-DOF elements with the surface charge method can reduce electric field error when compared to linear rectangular elements. With linear rectangular elements. The average error of electric field is approximately 1.61% while 12-DOF elements case can reduce the average error in electric field calculation down to 0.72%