IMPACT STRESS WAVE PROPAGATION IN A COMPRESSOR VALVE

摘要

This paper is aimed at the fundamental understanding of the impact failure mechanism of the compressor valve plate. The analytical solution of the displacements of the half-space due to a point impact load as a Green's function is derived. The numerical solution of the displacements and stresses in a plate due to the axisymmetric impact pressure are obtained after applying the special convolution and superposition algorithm developed by using the half-space solution. The wave effect on the material failure is clearly demonstrated and the new S-N curve in consideration of the wave propagation due to impact is recommended.