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《Journal of Vibration and Shock》 2015-22
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Mechanical properties of disc springs

XING Ji-hui;HUANG He;ZHANG Jia-yun;YANG Qing-shan;School of civil engineering,Beijing Jiaotong University;China Petroleum Materials Corporation;Sinopec Star Petroleum,LTD;  
Disc springs have been widely adopted in the isolation bearings of buildings and bridges. The damping and stiffness properties of the combination of disc springs influence the isolation effect significantly. However,there are obvious differences between the numerical simulation methods for the combination of disc springs with various boundary constraints and loading ways. Moreover,there is still lack of quantitative description of the damping characteristic of disc springs. B series disc springs with single disc,two foldings,three foldings,three foldings then reversed as well as six reversed groups of three foldings were taken into investigation respectively and both static and dynamic experiments were carried out. The influences of pre-compression quantity, dynamic excitation amplitude and loading frequency on equivalent damping and equivalent stiffness were discussed. Based on static experimental results, the reasonable coefficient of friction between disc springs was evaluated through the numerical simulation by using the software ANSYS considering the friction applied by the upper and bottom cover plates. The proposed coefficient was adopted in calculating the dynamic characteristics of the combination of disc springs subjected to dynamic loadings and the results accord well with experimental data.
【Fund】: 国家自然科学基金面上项目(51278036);; 教育部高等学校学科创新引智计划(B13002)
【CateGory Index】: TH135
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