关键词: 材料合成与加工工艺, 发动机, 主轴承座, 裂解力, 蠕墨铸铁, 数值分析

Abstract: Pre-calculating precisely the parameters of the splitting force is significant for the design of the splitting equipment and working out the technological process. The software MSC.MARC was used to simulate the splitting process of the main bearing block(its material is vermicular graphite cast iron as example) in Jetta car engines, and the splitting force versus J-integral relationship was obtained. The critical Jintegral value was determined from the Jintegral versus fracture toughness relationship, and the splitting force was derived by the linear interpolation method. The experimental study was performed and results show that the proposed method can be used to determine the splitting for the other splitting parts with different shapes and materials.

Key words: materials synthesis and processing technology, engine, main bearing block, fracture splitting force, vermicular graphite cast iron, numerical analysis