Mechanical analysis of shield machine cutter head under multiple working conditions based on elastoplastic model

Abstract The shield machine’s ability to simultaneously cut soft soil and hard rock makes it widely used in subway tunnels, diversion tunnels other underground engineering constructions. As the core component of composite machine, cutter head has a decisive effect on work efficiency machine. When machine is working, positive pressure directly affects working performance However, when its been influenced by many factors. Therefore, problems evaluating optimizing structure heat are needed. In this study, force balance equation derive calculation formula head. This can analyze value under various conditions different friction coefficients. At same time, research uses Hypermesh software integrate body transmission ring, ANSYS statics simulation analysis method perform mechanical calculations 1/6, 1/3, 1/2 rotor locked, overall stress distribution analyzed optimize design