Abstract: A dynamic failure model in ductile solids under the application of a mean tensile stress is developed. The proposed model considers void nucleation and growth as part of the failure process under dynamic loading conditions. In the evolution of porosity, work-hardening, rate-dependent contribution and inertial effects are taken into account. Meanwhile, a plate impact test is performed for simulating dynamic failure process. The failure model presented in the present paper is incorporated in a hydrodynamic computer code, to simulate the first few stress reverberations in the target as it spall and post impact porosity in the sample. Fair agreement between computed and experimental results is obtained.