FIG. 5.

(Color online) Normalized maximum stress $\underset{\text{space}}{\text{max}}[\underset{\text{time}}{\text{max}}(T_{\text{max}})]/p_0$ in an axisymmetric COM stone as a function of the dimensionless frequency ka for stones of different shapes (shown in different colors): spherical, cylindrical, and in the form of two connected cones. For nonspherical stones, the parameter a corresponds to the radius of a sphere of equal volume.