Vibration analysis of the excavator model in GRAFSIM program on the basis of a block diagram method

In this article a numerical vibration analysis of the excavator model is presented. This model with a discrete distribution of the parameters, shown in three working positions, is attracted to kinematic and dynamic excitations. The analysis is made in GRAFSIM program, which was intended and prepared for projecting and analysing 2D and 3D mechanical systems with linear couplings. The program works on the basis that the algorithm transforms matrix hybrid graph model structures into block diagrams structures [G. Wszołek, Hybrid graphs and block diagrams in analysing mechanical systems with control, Doctoral Thesis, Silesian University of Technology, Gliwice, Poland, 2002 (in polish); J. Świder, G. Wszołek, Graphs application in computer analysis of mechanical systems, Monograph, Silesian University Publishing Company, Gliwice, Poland, 2002 (in polish)]. The time and frequency responses from the examined mechanical system are presented.