Resumen
A mathematical model to identify the dynamic matrices of rigidity and flexibility of reticular structures starting from data of forced vibration measurementis presented. In the proposition it is considered that the behavior of the structural system is lineal, elastic and not buffered. The definition of the dynamicmatrices of rigidity and flexibility is possible when identifying by means of vibration measurement: the modal matrix, the natural frequencies of vibrationand the driving force frequency. It is necessary to propose the system?s masses matrix due to the fact that has not been possible to deduce it experimentallyin this stage of the investigation. The application of the developed methodology to a simple structural model is shown and the obtained results are commented.