摘要
为增强提速工况下跨座式单轨车辆的垂向运行平稳性,开展了单轨车辆走行轮系与悬挂系统参数匹配优化研究.首先,采用正交试验与方差分析法,厘清了各参数对单轨车辆垂向平稳性的敏感性,并筛选出主要影响因子.再以垂向加速度均方根为优化目标,基于多学科平台modeFRONTIER与Adams的联合优化模式,利用第2代改进型遗传算法,最终实现了走行轮系与悬挂系统参数的协同优化.研究结果表明:经参数优化后,车辆垂向平稳性显著改善;依据GB/T 5599—2019《机车车辆动力学性能评定及试验鉴定规范》,测量点A与B处的平稳性指标分别提升了14.5%和9.7%,且优化后各点垂向平稳性指标均小于2.5,达到该标准规定的“优秀”等级;同时,动力学性能评价证实,优化后车辆在提速工况下的动力学性能完全符合要求.
To enhance the vertical ride comfort of straddle monorail vehicle under speed-increase conditions,the parameter matching optimization was conducted on the running wheel system and suspension system.The orthogonal experimental design and the variance analysis were employed to clarify the sensitivity of various parameters to the vertical ride comfort of monorail vehicle,and the main influencing factors were screened out.Taking the root-mean-square value of vertical acceleration as optimization objective,the collaborative optimization of the running wheel system and suspension system parameters was achieved based on the multidisciplinary platform of modeFRONTIER and Adams by the second-generation improved genetic algorithm.The results show that the vertical ride comfort of the vehicle is significantly improved after parameter optimization.According to the"Specification for Dynamic Performance Assessment and Test Verification of Railway Vehicles"(GB/T 5599—2019),the ride indices at measuring points of A and B are increased by 14.5%and 9.7%,respectively.The vertical ride index values at all measured points are below 2.5 after optimization,reaching the"Excellent"grade specified in the standard.The dynamic performance evaluation confirms that the optimized vehicle fully meets the requirements under speed-increase conditions.
作者
文孝霞
张岚林
杜子学
杨震
许舟洲
WEN Xiaoxia;ZHANG Lanlin;DU Zixue;YANG Zhen;XU Zhouzhou(Rail Transit Research Institute,Chongqing Jiaotong University,Chongqing 400041,China)
出处
《江苏大学学报(自然科学版)》
北大核心
2026年第2期134-142,174,共10页
Journal of Jiangsu University(Natural Science Edition)
基金
重庆市技术创新与应用发展专项重大项目(CSTB2024TIAD-STX0021)
重庆市自然科学基金资助项目(CSTB2022NSCQ-MSX1264)。
关键词
跨座式单轨车辆
垂向平稳性
正交试验
参数优化
动力学性能
straddle monorail vehicle
vertical ride comfort
orthogonal experiment
parameter optimization
dynamic performance
