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Effects of friction variability on isolation performance of rolling-spring systems 被引量:1

Effects of friction variability on isolation performance of rolling-spring systems
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摘要 By taking a rolling-spring isolation system as the study object, the effects of the non-uniform distribution of rolling friction coefficient on its isolation performance were analyzed by a compiled computer program. The results show that the errors associated with the structural maximum relative displacement, acceleration and residual displacement due to ignoring the friction variability sequentially grow. This rule is weakened by the spring action, however, the unreasonable spring constant will cause sympathetic vibration. Under the condition of large friction variability, in the calculation of the structural maximum relative displacement and acceleration, the friction variability should be considered. When the structural residual displacement is concerned, the variability of rolling friction coefficient should be fully considered regardless of the friction variability. By taking a rolling-spring isolation system as the study object, the effects of the non-uniform distribution of rolling friction coefficient on its isolation performance were analyzed by a compiled computer program. The results show that the errors associated with the structural maximum relative displacement, acceleration and residual displacement due to ignoring the friction variability sequentially grow. This rule is weakened by the spring action, however, the unreasonable spring constant will cause sympathetic vibration. Under the condition of large friction variability, in the calculation of the structural maximum relative displacement and acceleration, the friction variability should be considered. When the structural residual displacement is concerned, the variability of rolling friction coefficient should be fully considered regardless of the friction variability.
出处 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第1期233-239,共7页 中南大学学报(英文版)
基金 Projects(51308549,51378504,51478475) supported by the National Natural Science Foundation of China Project(2015JJ3159) supported by the Natural Science Foundation of Hunan Province,China Project(2015CX006) supported by the Innovation-driven Plan in Central South University,China
关键词 rolling-spring structure seismic isolation rolling friction seismic performance 滚动摩擦系数 弹簧系统 隔振性能 计算机程序 变异 相对位移 非均匀分布 隔振系统
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