A penny shaped crack in a transversely isotropic material under non-axisymmetric impact loads

A solution is given for problems involving non!axisymmetric dynamic impact loading of a penny shaped crack in a transversely isotropic medium[ Laplace and Hankel transforms are used to reduce the equations of elasticity to integral equations\ and solutions are obtained for the three modes of fracture[ The stress intensity factors are determined for a penny shaped crack loaded by concentrated normal impact forces and concentrated radial shear impact forces[ The integral equations are solved by numerical methods\ and the results are plotted showing how the dynamic stress intensity factors are in~uenced by the asymmetric loading[ 0887 Elsevier Science Ltd[ All rights reserved