FEA analysis of the shield machine main bearing under radial force

For three-row of roller shield machine main bearing, which is in large dimension and has large number of rolling elements, it´s difficult to build an intact finity model to simulate. By using ANSYS software, one half of bearing and a single roll are respectively established under the action of the radial force. The contact stress distribution of a bearing and the position of the maximum load roller are confirmed by analysis of the half bearing model. Based on the finite element analysis of a single roller, the contact stress of a single roller is calculated. A single roller analysis results are close to the solution of hertz theory. This research makes the first step for continuous study on loading the moment and combined load.