A STUDY ON DAMPING CHARACTERISTICS OF SHELL ANDSPATIAL STRUCTURES-DAMPING RATIOS OF A CYLINDRICAL SHELL-

摘要

Impact vibration experiments, microtremor observations, and rope-cut experiments on a cylindrical shellconstructed at the entrance of the gymnasium at Funabashi campus, Nihon University were carried out,and the data obtained by measurements under experimental modes using the RD method were evaluated.Then the difference in damping ratio in light of the difference in experimental methods and modes wereconsidered. Further past measurement data on shell and spatial structures were arranged, those with thenewly obtained experimental data were compared, and the results of the comparisons were analyzed,thereby clarifying the damping characteristics of shell and spatial structures.