竖向环境振动对人车路系统耦合振动的影响
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摘要
为分析竖向环境振动对人车路系统耦合振动的影响,人体采用并联动力模型,车辆采用7自由度全车模型,路面采用Kelvin地基上梁单元进行模拟,通过车路之间的动态轮胎力建立起考虑竖向环境振动作用的人车路耦合振动方程;运用New-mark积分法对方程组进行求解,采用人体竖向振动加速度均方根值对车辆乘坐舒适度进行评价;对地震波频率和地震波幅值对系统振动的影响进行讨论,以及车辆乘坐舒适度和乘坐者人体生理反应进行分析.数值分析结果表明:竖向环境振动加剧了人车路系统的振动,显著增大了车辆乘坐舒适度指标;地震波频率和地震波幅值对车辆乘坐舒适度的影响都很大.
In order to study the effect of vertical ambient vibration on coupling vibration of body-vehicle-road system,the human body was simplified as the parallel dynamic model,the vehicle was simplified as the seven-freedom vibrating model,and the road was supposed as the Euler Beam on the Kelvin base.And then based on the interaction force between the road and the vehicle,the dynamic functions of the vehicle-road coupled system were derived.The functions were solved with the New-mark method.The riding comfort of the vehicle was appraised with the RMS of the body vibrating acceleration.The effects of the seismic wave frequency and its amplitude on the system vibration were analyzed,and the vibrating comfort of the vehicle and human physiological responses were discussed.The numeric analysis results indicate that the vertical ambient vibration aggravates the vibration of the body-vehicle-road coupled system,and also enlarges the value of the vibrating comfort of the vehicle;the seismic wave frequency and its amplitude have great effect on the vibrating comfort of the vehicle.
In order to study the effect of vertical ambient vibration on coupling vibration of body-vehicle-road system,the human body was simplified as the parallel dynamic model,the vehicle was simplified as the seven-freedom vibrating model,and the road was supposed as the Euler Beam on the Kelvin base.And then based on the interaction force between the road and the vehicle,the dynamic functions of the vehicle-road coupled system were derived.The functions were solved with the New-mark method.The riding comfort of the vehicle was appraised with the RMS of the body vibrating acceleration.The effects of the seismic wave frequency and its amplitude on the system vibration were analyzed,and the vibrating comfort of the vehicle and human physiological responses were discussed.The numeric analysis results indicate that the vertical ambient vibration aggravates the vibration of the body-vehicle-road coupled system,and also enlarges the value of the vibrating comfort of the vehicle;the seismic wave frequency and its amplitude have great effect on the vibrating comfort of the vehicle.
引文
1李韶华.重载汽车一路面一路基耦合系统动力学研究.北京交通大学[博士学位论文],2008(Li S H.Investigation on dynamics of heavy vehicle-pavement-foundation coupled system[Doctoral Dissertation].Beijing Jiaotong University,2008(in Chinese))
2张丙强,李亮.车辆-路面耦合振动系统模型与仿真分析.振动与冲击,2010,29(2):35～38(Zhang B Q,Li L.Dynamic model and simulation of the vehicle-road coupled system.Journal of Vibration and Shock,2010,29(2):35～38(in Chinese))
3张丙强,李亮.人-车-路耦合系统振动分析及舒适度评价.振动与冲击,2011,30(1):1～5(Zhang B Q,Li L.Dy-namic model and comfortableness evaluation of a Body-ve-hicle-road coupled system.Journal of Vibration and Shock,2011,30(1):1～5(in Chinese))
4丁洁民,尹志刚.地铁引起建筑物振动舒适度分析.振动与冲击,2008,27(9):96～99(Ding J M,Yin Z G.Ser-viceability analysis of Building Vibration Induced by Under-ground Trains.Journal of Vibration and Shock,2008,27(9):96～99(in Chinese))
5陈士海,魏海霞,张安康.多维爆破地震动作用下框架结构动态响应有限元时程分析.振动与冲击,2010,29(9):134～137(Chen S H,Wei H X,Zhang A K.Finite ele-ment time history analysis of dynamic response of frame structure under multi dimensional blasting vibration.Journal of Vibration and Shock,2010,29(9):134～137(in Chi-nese))
6谭长建,祝兵.地震作用下高速列车与桥梁耦合振动分析.振动与冲击,2009,28(1):4～8(Tan C J,Zhu B.Cou-pled vibration analysis of high speed train and bridge subjec-ted to seismic excitation.Journal of Vibration and Shock,2009,28(1):4～8(in Chinese))
7Xu Y L,Guo W H.Effects of bridge motion and crosswind on ride comfort of road vehicles.Journal of Wind Engineer-ing and Industrial Aerodynamics,2004,92:641～662
8韩万水,陈艾荣.风-汽车-桥梁系统空间耦合振动研究.土木工程学报,2007,40(9):53～58(Han W S,Chen A R.Three-dimensional coupling vibration of wind-vehicle-bridge systems.China Civil Engineering Journal,2007,40(9):53～58(in Chinese))
9何浩祥,闫维明,张爱林等.竖向环境振动下人与结构相互作用及舒适度研究.振动工程学报,2008,21(5):446～451(He H X,Yan W M,Zhang A L.Human-structure dy-namic interaction and comfort evaluation in vertical ambient vibration.Journal of Vibration Engineering,2008,21(5):446～451(in Chinese))
10张立军,张天侠.车辆四轮相关时域随机输入通用模型的研究.农业机械学报,2005,Vol.36(12):29～33(Zhang L J,Zhang T X.Study on general model of random inputs of the vehicle with four wheels correlated in time domain.Jour-nal of agricultural machinery,2005,36(12):29～33(in Chinese))
11Dodds C J,Roson J D.The description of road surface roughness.Journal of Sound and Vibration,1973,31(2):175～183
12韩万水,陈艾荣.侧风与桥梁振动对车辆行驶舒适性影响研究.土木工程学报,2008,41(4):55～60(Han W S,Chen A R.Effects of crosswind and bridge motion on ridecomfort of road vehicles.China Civil Engineering Journal,2008,41(4):55～60(in Chinese))
13谢礼立,吕大刚.结构动力学理论及其在地震工程中的应用.高等教育出版社,2007:141～177(Xie L L,Lu D G.Structural dynamics theory and its application in earth-quake engineering.Higher education press,2007:141～177(in Chinese))
14徐娟,谭继锦,陈无畏.基于横向和垂向动力学的整车模型与仿真.农业机械学报,2005,36(9):9～11(Xu J,Tan J J,Chen W W.Modeling and simulation of integrated car system for its lateral and vertical dynamics.Journal of agri-cultural machinery,2005,36(9):9～11(in Chinese))
2张丙强,李亮.车辆-路面耦合振动系统模型与仿真分析.振动与冲击,2010,29(2):35～38(Zhang B Q,Li L.Dynamic model and simulation of the vehicle-road coupled system.Journal of Vibration and Shock,2010,29(2):35～38(in Chinese))
3张丙强,李亮.人-车-路耦合系统振动分析及舒适度评价.振动与冲击,2011,30(1):1～5(Zhang B Q,Li L.Dy-namic model and comfortableness evaluation of a Body-ve-hicle-road coupled system.Journal of Vibration and Shock,2011,30(1):1～5(in Chinese))
4丁洁民,尹志刚.地铁引起建筑物振动舒适度分析.振动与冲击,2008,27(9):96～99(Ding J M,Yin Z G.Ser-viceability analysis of Building Vibration Induced by Under-ground Trains.Journal of Vibration and Shock,2008,27(9):96～99(in Chinese))
5陈士海,魏海霞,张安康.多维爆破地震动作用下框架结构动态响应有限元时程分析.振动与冲击,2010,29(9):134～137(Chen S H,Wei H X,Zhang A K.Finite ele-ment time history analysis of dynamic response of frame structure under multi dimensional blasting vibration.Journal of Vibration and Shock,2010,29(9):134～137(in Chi-nese))
6谭长建,祝兵.地震作用下高速列车与桥梁耦合振动分析.振动与冲击,2009,28(1):4～8(Tan C J,Zhu B.Cou-pled vibration analysis of high speed train and bridge subjec-ted to seismic excitation.Journal of Vibration and Shock,2009,28(1):4～8(in Chinese))
7Xu Y L,Guo W H.Effects of bridge motion and crosswind on ride comfort of road vehicles.Journal of Wind Engineer-ing and Industrial Aerodynamics,2004,92:641～662
8韩万水,陈艾荣.风-汽车-桥梁系统空间耦合振动研究.土木工程学报,2007,40(9):53～58(Han W S,Chen A R.Three-dimensional coupling vibration of wind-vehicle-bridge systems.China Civil Engineering Journal,2007,40(9):53～58(in Chinese))
9何浩祥,闫维明,张爱林等.竖向环境振动下人与结构相互作用及舒适度研究.振动工程学报,2008,21(5):446～451(He H X,Yan W M,Zhang A L.Human-structure dy-namic interaction and comfort evaluation in vertical ambient vibration.Journal of Vibration Engineering,2008,21(5):446～451(in Chinese))
10张立军,张天侠.车辆四轮相关时域随机输入通用模型的研究.农业机械学报,2005,Vol.36(12):29～33(Zhang L J,Zhang T X.Study on general model of random inputs of the vehicle with four wheels correlated in time domain.Jour-nal of agricultural machinery,2005,36(12):29～33(in Chinese))
11Dodds C J,Roson J D.The description of road surface roughness.Journal of Sound and Vibration,1973,31(2):175～183
12韩万水,陈艾荣.侧风与桥梁振动对车辆行驶舒适性影响研究.土木工程学报,2008,41(4):55～60(Han W S,Chen A R.Effects of crosswind and bridge motion on ridecomfort of road vehicles.China Civil Engineering Journal,2008,41(4):55～60(in Chinese))
13谢礼立,吕大刚.结构动力学理论及其在地震工程中的应用.高等教育出版社,2007:141～177(Xie L L,Lu D G.Structural dynamics theory and its application in earth-quake engineering.Higher education press,2007:141～177(in Chinese))
14徐娟,谭继锦,陈无畏.基于横向和垂向动力学的整车模型与仿真.农业机械学报,2005,36(9):9～11(Xu J,Tan J J,Chen W W.Modeling and simulation of integrated car system for its lateral and vertical dynamics.Journal of agri-cultural machinery,2005,36(9):9～11(in Chinese))
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