.. _V5.01.103: **v5.01.103** SDND103 - Post subject to dynamic axial stress =========================================================================== **Summary** The aim is to calculate the response of a column subjected to any seismic loading. The column is modelled by an undamped mass-spring system, its connection with the ground by a non-linearity such as force-displacement. We test the discrete element in traction-compression, the calculation of natural modes and the calculation of the transient response by modal recombination taking into account a non-linearity of the effort-displacement type. The initial speed is assumed to be non-zero and the load is of the type of acceleration imposed on the ground. The results obtained are in very good agreement with the reference results, which are analytical results. .. toctree:: :hidden: self .. toctree:: :maxdepth: 2 :numbered: Probl_me_de_r_f_rence Solution_de_r_f_rence Mod_lisation_A Synth_se_des_r_sultats