  The excitation of nonlinear wave structures in a dusty plasma caused by a
moving external charge perturbation is examined in this work, which uses a 1-D
flux corrected transport simulation. The plasma responds uniquely to different
nature of the moving charge, depending on which, for small amplitude
perturbations, pinned envelope solitons are generated and electrostatic
dispersive ion-acoustic shock waves are formed for a large amplitude
perturbation. The presence of dust particles is found to suppress the formation
of dispersive shocks at low velocity of the external charge debris. The results
are also investigated theoretically as a solution to the generalized
Gross-Piteavskii equation, which broadly supports the simulation results.
