摘要
基于单自由度的人体模型,将分布人群简化成均匀连续分布的质量-弹簧-阻尼系统,并考虑楼板的阻尼,建立了有阻尼的分布人群-薄板耦合系统模型。分析了薄板与人体的频率比及人板质量比等参数对耦合系统动力特性的影响。以四边简支的均质矩形薄板为例,用有限元方法对该文结论进行了验证。研究成果可为人与结构相互作用及结构的人致振动分析提供参考。
Based on SDF human body model, the dynamic model of the coupled system consisting damped plate and uniformly distributed crowd is developed, where the crowd is modeled as uniformly distributed mass-spring-damper system. Parametric studies are performed and the effects of the frequency ratio and the mass ratio of the crowd to the plate on the dynamic characteristics of the coupled system are analyzed. Finally, the observations made in this paper are checked by numerical simulation of a simply supported rectangle plate with fully occupied uniformly distributed crowd. The results of the present study are expected to be useful for future study of human-structure interaction and the mechanism of structural vibration induced by crowd loads.
出处
《工程力学》
EI
CSCD
北大核心
2013年第1期295-300,共6页
Engineering Mechanics
基金
国家自然科学基金面上项目(51178365)
湖北省自然科学基金重点项目(2009CDA005)
武汉市学科带头人计划项目(201051730549)
关键词
人-结构相互作用
动力特性
阻尼
均布人群
数值模拟
human-structure interaction
dynamic characteristics
damping
uniformly distributed crowd
numerical simulation
