Investigation of mechanical stresses for cylinder head of high power diesel engine

To investigate the influence on the cylinder head's stress distribution and value caused by its structure's changes, Three types of cylinder heads of high power diesel engines were analysed with finite element method by using I-DEAS Master series software. The actual condition of the cylinder head was simulated with different kinds of elements. Temperature method was used to exert the predeformation of the bolts to the finite element model, so the pretightening force was described accurately. Stress distribution regularities of the cylinder head under different working conditions were taken. On this basis, the analyzing results of three sorts of the design schemes were compared and the optimum structure was taken. The results indicate that transition condition between the head plate and the standing board, shape of the head plate and the jobbing sheet, etc. will affect the cylinder head's bearing condition.