人-车-桥耦合系统振动分析及乘客舒适度评价  

Vibration Analysis and Comfortableness Evaluation of a Human-vehicle-bridge Coupled System

作　　者：刘习军[1,2] 张西强[1,2] 张素侠[1,2] 

机构地区：[1]天津大学机械工程学院,天津300072 [2]天津市非线性动力学与混沌重点实验室,天津300072

出　　处：《机械科学与技术》2014年第9期1387-1392,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：天津市自然科学基金项目(09JCZDJC26800);国家自然科学基金项目(51009107)资助

摘　　要：基于8自由度人椅动力学模型和31自由度车辆模型建立人-车-桥耦合系统,车辆与轨道桥梁通过轮轨接触力及位移协调条件耦合,建立人-车-桥耦合振动方程,采用Newmark-β法对方程组进行求解。对国产300 km/h动力分散式列车的过桥行走过程进行分析,采用乘坐舒适度指标对人体振动舒适性进行评价,并讨论了轨道不平顺等级、车速、乘客数量以及乘客位置对人体舒适程度的影响。Based on an 8 degree of freedom human-seat dynamic model and a 31 degree of freedom vehicle model,a human-vehicle-bridge coupled system was established. The vehicle and the bridge were coupled by wheel /rail contact force and displacement coordination condition. The coupled equations of the system were built and were solved by Newmark-beta method. The running process of the 300 km /h railway vehicle on the bridge was simulated and the human vibration comfortableness was evaluated with the riding comfort value. The effects of track irregularity,running speed,number and location of passengers were also discussed.

关 键 词：车-桥系统 人体动力模型 乘坐舒适度 

分 类 号：U271.1[机械工程—车辆工程] U24[交通运输工程—载运工具运用工程]