A design method for reducing assembly stress of brittle material

High hard and high brittle material is often used in the mechanical industry. This kind of material usually has high stress after machining and assembly. The existence of high stress sometimes causes the fragmentation of the components, or even the damage of the facility. So we should study on the stress after the assembly of components, to make the stress of brittle material components evenly and make the components of high reliability. This paper takes the cylindrical brittle material rigged out in the cylindrical hole as an example, uses finite element software to analyze the stress, and optimize the structure of the components based on the situation of stress distribution. As we analyze the stress again after the structure optimization, the result shows that it makes sure of the same size of working surface, distributes the assembly stress evenly, makes the high stress point far from the working surface, and reduces the probability of components, fragmentation caused by the concentrated stress of the brittle material. (authors)