Research on human model construction and electric shock simulation based on difference image and finite element analysis

Abstract.

In order to study the density distribution of electric current in various parts of the body under electric shock，using the advantages of the finite element in solving nonlinear problems, the method on the human model construction and electric shock simulation based on difference image and finite element analysis was proposed. The body contour image was obtained by difference image method. The morphological algorithm was used to optimize the obtained contour of the human body, and the coordinates of the feature points of the human body was obtained by the secant method. Then, three-dimensional model of human body was constructed by the ANSYS platform, and the appropriate material properties of the different parts of the human body was given according to the difference of the tissue structure electrical characteristics in various parts of the human body. The density distribution of electric current under different shock channel was studied by applying a voltage load. The simulation results showed that the path flowing through electric shock current was different, the electric current density of all parts of the human body also was different. The largest electric current density was the electric shock position, the least electric current density were the torso part. The research results could be the simulation platform for the study of low voltage electrical safety.