Open AccessResearch on the dynamics of railway car construction
Author(s) -
J. Bednarz
Publication year - 2019
Publication title -
autobusy
Language(s) - English
Resource type - Journals
eISSN - 2450-7725
pISSN - 1509-5878
DOI - 10.24136/atest.2019.024
Subject(s) - modal , vibration , finite element method , controllability , modal analysis , computer science , natural frequency , transformation (genetics) , normal mode , structural engineering , mode (computer interface) , stability (learning theory) , noise (video) , research object , structural dynamics , engineering , acoustics , mathematics , physics , artificial intelligence , materials science , image (mathematics) , chemistry , operating system , biochemistry , machine learning , regional science , polymer chemistry , gene , geography
Nowadays, one of the basic criteria of the design of mechanical structures are dynamic properties of the object. They have a significant effect on the vibration, emitted noise, fatigue strength, controllability and stability of the structure. The structural models are most often use to describe the dynamics of the structures. These models are built in accordance with the principles of the finite element method . Structural model can be used to determine the modal model which is a collection of natural frequencies and corresponding mode shapes by an appropriate coordinate transformation model. The construction pro-cess is called the modal analysis . The article presented a method of conducting the experimental modal studies of railway car. The aim of the study was to identify the dynamic properties including the frequency and mode shapes of the object..