摘要
该文用一个具有分布质量、阻尼和刚度的动力学模型来表示附着于梁上的人体,利用Lagrange方程建立了有限个人留驻在梁上(即人-梁相互作用动力学模型)的振动微分方程。分析了人-简支梁联合体系的动力学特征,展现了人对简支梁动力特性的影响。并将数值模拟结果与英国学者的实验结果相比较,验证了该文所建立的人-梁相互作用动力学模型的合理性和正确性。
A human with variable mass,stiffness and damping distributions is placed on a beam. A new dynamic model for human-beam coupled system is established by means of the Lagrange equation. Based on the presented model,this paper investigates the influence of human occupants on dynamic characteristics of a slender simply supported beam. Compared with the experimental results made by British scholars,it is demonstrated that the new dynamic model is correct and reasonable.
出处
《工程力学》
EI
CSCD
北大核心
2010年第5期14-20,共7页
Engineering Mechanics
关键词
人-梁相互作用
人体动力模型
动力微分方程
数值模拟
动力特征
human-beam interaction
human-body dynamic model
dynamic differential equation
numerical simulation
dynamic characteristics
