车桥垂向振动耦合下ISD悬架特性分析及优化  

Performance Analysis and Optimization of ISD Suspension Under Vehicle-Bridge Vertical Coupled Vibration

作　　者：徐杨[1] 张步云 王勇[1] 张孝良[1] 徐兴[1] XU Yang;ZHANG Buyun;WANG Yong;ZHANG Xiaoliang;XU Xing(Automotive Engineering Research Institute,Jiangsu University,Zhenjiang 212013,Jiangsu,China)

机构地区：[1]江苏大学汽车工程研究院,江苏镇江212013

出　　处：《汽车工程学报》2025年第2期187-196,共10页Chinese Journal of Automotive Engineering

基　　金：国家自然科学基金项目(51705205,12172153);中国博士后科学基金项目(2022M711384);江苏省高等学校基础学科(自然科学)重大项目(21KJA460002);镇江市基础研究专项(JC2024009)。

摘　　要：为提升车辆在桥上行驶的舒适性并减小其对桥梁的作用,考虑车桥垂向耦合振动对车桥响应的影响,开展惯容器悬架(ISD)系统特性分析与优化研究。建立了欧拉-伯努利简支梁与单/双质量模型的车桥耦合系统模型,分析耦合作用对车桥固有特性的影响;比较耦合作用下ISD悬架较传统悬架的优势,应用不动点理论对悬架阻尼参数进行最优调节,获得车辆最优调谐频率与阻尼比系数。研究表明,ISD悬架有效降低了传递率幅值,改善了系统中高频特性,提升了车辆舒适性并明显抑制了对桥梁的载荷。研究成果可为车辆特性改善提供参考,并有利于桥梁健康。To improve vehicle ride comfort on bridges and reduce its impact on the bridge structure,a parametric optimization method for the inerter-spring-damper(ISD)suspension was developed,taking into account the influence of vehicle-bridge interaction(VBI)on vehicle and bridge responses.A coupled vehiclebridge system was modeled using a Euler-Bernoulli simply supported beam and a single-/dual-mass vehicle to analyze the impact of the interaction on the inherent characteristics of both the vehicle and the bridge.The advantages of the ISD suspension under coupling effects were examined and the influence of the inertial coefficient on transmissibility characteristics was analyzed.The fixed-point theory was employed to optimally adjust suspension damping,obtaining the optimal frequency and damping ratio for the vehicle.The results show that the ISD suspension improves high-frequency system characteristics,effectively reduces the transmissibility amplitude,enhances ride comfort and significantly suppresses bridge loads.The study is valuable for improving vehicle ride quality and the structural health of bridges.

关 键 词：车桥耦合 参数优化 不动点理论 惯容器悬架 传递率 

分 类 号：U461.4[机械工程—车辆工程] U441.3[交通运输工程—载运工具运用工程]