This chapter presents a case study of dynamic compaction and compares the numerical predictions with experimental data. Dynamic compaction is a method used to increase the density of soil making the soil more stiff and increasing the peak strength. Two different techniques exist and are depicted in the chapter. The first technique is the free fall system, which consists in lifting a pounder with a crane and letting it free fall on the ground. The second technique follows the same principles as the first but the pounder is connected to the crane by a cable. The choice of the MPM as a numerical method of dynamic compaction seems reasonable as large deformations occur during the formation of the crater. The behaviour of the soil was simulated by using the hypoplastic constitutive model. The comparison of the maximum vertical acceleration of all impacts for both locations gives an idea of the quality of the numerical estimation.