A study on dynamic characteristics test of anti-vibration material for shock and vibration reduction of railroad low-vibration logistics system

摘要

The most important and essential factor of dynamic characteristics is damping capacity and natural frequency. Damping capacity improve performance for shock isolation, and it can avoid amplification due to resonance. Lower natural-frequency than dynamic-force frequency improve vibration transmissibility performance. The damping capacity test was conducted by using universal test machine and calculated from the hysteresis diagram. Natural frequency test was conducted by impact modal test. The specimen materials were classified into elastic mats, elastic mounts, micro anti-vibration mounts, wire-mounts, and air-mounts. Total 27 specimens were tested and the results were compared and evaluated. The dynamic characteristics of each material derived from this test will be used as a design parameter for railroad low-vibration logistic system along with the results of durability test and low temperature fatigue test proceeding later. This study is the first year study of the 4th year study for the development of low vibration logistics system. In this study, the vibration characteristic profile of Korean road and railway was studied firstly, and the dynamic characteristic test was conducted to select anti-vibration material in order to reduce shock and vibration in a railroad freight cargo.