Open AccessFrequency response function simulation and evaluating in boring
Author(s) -
Maksym Shykhalieiev,
В. В. Медведев
Publication year - 2021
Publication title -
mechanics and advanced technologies
Language(s) - English
Resource type - Journals
eISSN - 2522-4255
pISSN - 2521-1943
DOI - 10.20535/2521-1943.2021.5.3.242214
Subject(s) - frequency response , machining , amplitude , vibration , function (biology) , hammer , finite element method , stiffness , structural engineering , computer science , engineering , acoustics , mechanical engineering , physics , optics , evolutionary biology , electrical engineering , biology
Finite element method of simulating frequency response function (FRF) for boring tool in LS-Dyna solver is investigated in this work. Nowadays, computer numerical simulation allows to obtain FRF using different materials model with high precision compared to real experiments with sensors like impact hammer testing. This function is used in construction of stability lobe diagrams that allows operator of machining center to avoid chatter self-excited vibrations. Such vibration is led to decreasing of productivity and quality in cutting of metals and other materials. Amplitude and phase angle for the model is obtained from LS-Dyna result interpreter, that reads binary files, created during simulation by the program. Amplitude and phase angle of frequency response function are depending on dynamic stiffness of machining system. Real and imaginary part of frequency response function have been obtained during simulation. With luck of dynamic stiffness amplitudes of response increases.