Bending fatigue failures of cantilever type suction valve reeds occurred under operating conditions in a semi-hermetic refrigerant compressor during field trials. The finite element method (FEM) was applied to predict both the static and dynamic displacements and the resultant stresses of the reeds. The dynamic stresses in the location of the fracture exceeded the fatigue limit of the reed steel. The procedure could assist in the modification of a reed design so that failures due to bending fatigue were avoided.
展开▼
