Maria Luminita Scutaru - Department of Mechanical Engineering, Transilvania University of Brasov, B-dul Eroilor, ۲۹, ۵۰۰۰۳۶, Romania
Sorin Vlase - Department of Mechanical Engineering, Transilvania University of Brasov, B-dul Eroilor, ۲۹, ۵۰۰۰۳۶, Romania
Marin Marin - Department of Mathematics and Computer Science, Transilvania University of Brasov, B-dul Eroilor ۲۹, ۵۰۰۰۳۶ Brasov, Romania

Mechanical systems with structural symmetries present vibration properties that allow the calculation to be easier and the analysis time to decrease. The paper aims to use the properties involved by the symmetries that exist in mechanical systems for the analysis of the forced response to vibrations. Thus, the study of the properties of systems with symmetries or with identical parts is expanded. Based on a classic model, the characteristic properties that appear in this case are obtained and the advantages of using these properties are revealed. On an example consisting of a truck equipped with two identical engines, the way of applying these properties in the calculation and the resulting advantages is presented.

symmetrical system, Forced vibration, finite element method, eigenmode