Simulation Study on the Static Stresses of an Diesel Engine Block Based on Different Experimental Physical Model Cases

摘要

The 3D solid models of two different testing physical model case of a diesel engine block are established. Based on those two cases, a static analysis on the preload working conditions and explosion working conditions are conducted for the engine block structure. The results shows that the stresses of each measuring point of case 1 and case 2 are almost same at the preload working conditions. At the two different explosion working conditions, the trend distributions of measuring points are similar, the stresses of measuring points 1～4 of case 1 are less than the case 2, but the stresses of measuring points 5～8 of case 1 are greater than the case 2, this trend indicates the tensile stresses at the transition of bearing cap top is increasing obviously, there appears stress concentration at those areas.