Article(id=1227591033177965358, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591023870800760, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.202309019, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1693929600000, receivedDateStr=2023-09-06, revisedDate=1700150400000, revisedDateStr=2023-11-17, acceptedDate=null, acceptedDateStr=null, onlineDate=1770610109848, onlineDateStr=2026-02-09, pubDate=1754755200000, pubDateStr=2025-08-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770610109848, onlineIssueDateStr=2026-02-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770610109848, creator=13701087609, updateTime=1770610109848, updator=13701087609, issue=Issue{id=1227591023870800760, tenantId=1146029695717560320, journalId=1225147924628267009, year='2025', volume='38', issue='8', pageStart='1645', pageEnd='1934', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1770610107611, creator=13701087609, updateTime=1770610373804, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1227592140348388157, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591023870800760, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1227592140348388158, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591023870800760, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1799, endPage=1808, ext={EN=ArticleExt(id=1227591034184598330, articleId=1227591033177965358, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Probability density evolution analysis of coupled vibration of vehicle-track system under random excitation of wind and track irregularity, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Based on the train-track coupling dynamics and probability density evolution theory,a random vibration model of train-track system considering both the crosswind and track irregularity is established. The N-dimensional hypercube point set is used to generate the discrete random frequency and phase representative point set. Based on the random harmonic function method and the harmonic superposition method,the random track irregularity excitation samples and the wind speed time-history samples are simulated respectively. The obtained two random excitations are introduced into the train-track coupling system to obtain the representative responses. The probability density evolution equation of representative response is solved using the bilateral difference method to obtain the time-varying probability density evolution distribution of the vibration response. The Monte Carlo method (MCM) is employed to verify the computational efficiency and accuracy of the proposed model. The results indicate that the probability density evolution method (PDEM) is appliable to the random analysis of vehicle-track system under double random excitations including crosswind and track irregularity. When the number of representative sample points is 300 and the screening radius is 17.7,a good calculation results can be obtained by the proposed model in this paper. The random response analysis regarding a single random input cannot express an accurate result of the vehicle-track system’s random dynamic characteristic,which indicates the required consideration of both random excitations of crosswind and track irregularity in the random vibration analysis of vehicle-track system.
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依据车辆-轨道耦合动力学及概率密度演化理论,建立了考虑横风和轨道不平顺双重随机因素作用的车辆-轨道系统耦合振动模型。采用N维超立方体点集生成离散随机频率和相位代表点集,基于随机谐和函数方法和谐波叠加法分别模拟得到随机轨道不平顺激励样本和风速时程样本,并将所获得的双重随机荷载引入车辆-轨道耦合振动系统中求得代表性响应;采用双边差分法求解所建立的代表性响应的概率密度演化方程,获得振动响应的时变概率密度演化分布,并采用蒙特卡罗法(MCM)验证本文模型的计算效率和精度。研究结果表明:概率密度演化方法(PDEM)适用于横风和轨道不平顺双重随机激励作用下的车辆-轨道系统随机分析,且对于本文模型,当代表性样本点数为300,筛选半径取17.7时能够达到良好的计算效果;仅在单重随机荷载作用下进行随机响应分析不能准确反映车辆-轨道系统的随机动力特性,论证了开展双重随机激励作用下车辆-轨道系统随机分析的必要性。
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14(4):402-408., articleTitle=The new wheel/rail 3-dimensionally dynamically coupling model, refAbstract=null)], funds=[Fund(id=1227653585865995046, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, awardId=52378546, language=CN, fundingSource=国家自然科学基金资助项目(52378546), fundOrder=null, country=null), Fund(id=1227653585962464047, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, awardId=2023JJ30665, language=CN, fundingSource=湖南省自然科学基金资助项目(2023JJ30665), fundOrder=null, country=null), Fund(id=1227653586058933045, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, awardId=2022-重点-07, language=CN, fundingSource=中国中铁股份有限公司科技研究开发计划项目(2022-重点-07), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1227653577284448602, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, xref=null, ext=[AuthorCompanyExt(id=1227653577305420128, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, companyId=1227653577284448602, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Civil Engineering,Central South University,Changsha 410075,China), AuthorCompanyExt(id=1227653577309614433, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, companyId=1227653577284448602, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=中南大学土木工程学院,湖南 长沙 410075)])], figs=[ArticleFig(id=1227653581659107924, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Fig. 1, caption=
Computational flow diagram, figureFileSmall=otIl/z3Fld3qLllRBRJCsg==, figureFileBig=2RJ7iZB1a4zBJVDLMyZP6Q==, tableContent=null), ArticleFig(id=1227653581814297185, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=图1, caption=
计算流程图, figureFileSmall=otIl/z3Fld3qLllRBRJCsg==, figureFileBig=2RJ7iZB1a4zBJVDLMyZP6Q==, tableContent=null), ArticleFig(id=1227653581977875052, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Fig. 2, caption=
Schematic diagram of vehicle model, figureFileSmall=EiWKR/Ymq+QCn38CNSPuWA==, figureFileBig=SPcSWIXAGczPVo1H0MvOEg==, tableContent=null), ArticleFig(id=1227653582179201659, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=图2, caption=
车辆模型示意图, figureFileSmall=EiWKR/Ymq+QCn38CNSPuWA==, figureFileBig=SPcSWIXAGczPVo1H0MvOEg==, tableContent=null), ArticleFig(id=1227653582313419399, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Fig. 3, caption=
Schematic diagram of spacial track model, figureFileSmall=8us8Yun6G614SwIen+o8IQ==, figureFileBig=2aXPYfhQ/lZtAZizxX6WuA==, tableContent=null), ArticleFig(id=1227653582422471309, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=图3, caption=
轨道空间模型示意图, figureFileSmall=8us8Yun6G614SwIen+o8IQ==, figureFileBig=2aXPYfhQ/lZtAZizxX6WuA==, tableContent=null), ArticleFig(id=1227653582531523223, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Fig. 4, caption=
Probability density evolution diagram of lateral acceleration response of vehicle body, figureFileSmall=p8jl4KsqX6ZMlUHeOeAGaQ==, figureFileBig=457nW2v34CD1P5TEm4W2iQ==, tableContent=null), ArticleFig(id=1227653582632186525, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=图4, caption=
车体横向加速度响应概率密度演化图, figureFileSmall=p8jl4KsqX6ZMlUHeOeAGaQ==, figureFileBig=457nW2v34CD1P5TEm4W2iQ==, tableContent=null), ArticleFig(id=1227653582728655528, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Fig. 5, caption=
The number of representative sample points nsel versus the screening radius r0, figureFileSmall=jDhUq5ln1eYqQU7wCNRZtg==, figureFileBig=asf57wVCM8LyH+YSnn4wrA==, tableContent=null), ArticleFig(id=1227653582820930226, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=图5, caption=
代表性样本点数nsel随筛选半径r0的变化, figureFileSmall=jDhUq5ln1eYqQU7wCNRZtg==, figureFileBig=asf57wVCM8LyH+YSnn4wrA==, tableContent=null), ArticleFig(id=1227653582917399225, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Fig. 6, caption=
Comparison of mean and standard deviation of vertical acceleration of vehicle body, figureFileSmall=ixutbnTqcPju909UotuqVQ==, figureFileBig=53oeLLq4mG93YeVuMbccLw==, tableContent=null), ArticleFig(id=1227653583013868224, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=图6, caption=
车体竖向加速度均值、标准差对比, figureFileSmall=ixutbnTqcPju909UotuqVQ==, figureFileBig=53oeLLq4mG93YeVuMbccLw==, tableContent=null), ArticleFig(id=1227653583148085956, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Fig. 7, caption=
Comparison of mean and standard deviation of lateral displacement of right rail, figureFileSmall=M1uMBfsO9O2Y5nMH6HSGCA==, figureFileBig=gZJwjuYKwrUpgHWz7EfDsw==, tableContent=null), ArticleFig(id=1227653583320052436, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=图7, caption=
右轨横向位移均值、标准差对比, figureFileSmall=M1uMBfsO9O2Y5nMH6HSGCA==, figureFileBig=gZJwjuYKwrUpgHWz7EfDsw==, tableContent=null), ArticleFig(id=1227653583450075868, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Fig. 8, caption=
Histogram of lateral displacement of vehicle body, figureFileSmall=3dSEiSCUamzzNg1G8c6VLQ==, figureFileBig=/u3o0G1bmnCmkb29HM8wog==, tableContent=null), ArticleFig(id=1227653583563322085, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=图8, caption=
车体横向位移分布直方图, figureFileSmall=3dSEiSCUamzzNg1G8c6VLQ==, figureFileBig=/u3o0G1bmnCmkb29HM8wog==, tableContent=null), ArticleFig(id=1227653583672373997, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Tab. 1, caption=
The maximum value of mean and standard deviation of dynamic response for different sample sizes
, figureFileSmall=null, figureFileBig=null, tableContent=
| 动力响应 | 样本量(MCM) |
|---|
| 500组 | 1000组 | 2000组 | 3000组 | 4000组 |
|---|
| 车体横向位移/m | 均值 | 1.845×10-2 | 1.744×10-2 | 1.708×10-2 | 1.694×10-2 | 1.697×10-2 |
| 标准差 | 2.612×10-2 | 2.643×10-2 | 2.623×10-2 | 2.619×10-2 | 2.608×10-2 |
| 车体竖向位移/m | 均值 | 6.390×10-3 | 6.299×10-3 | 6.174×10-3 | 6.113×10-3 | 6.081×10-3 |
| 标准差 | 1.489×10-2 | 1.520×10-2 | 1.518×10-2 | 1.520×10-2 | 1.516×10-2 |
| 车体横向加速度/(m·s-2) | 均值 | 0.159 | 0.150 | 0.148 | 0.147 | 0.146 |
| 标准差 | 0.409 | 0.419 | 0.417 | 0.418 | 0.417 |
| 车体竖向加速度/(m·s-2) | 均值 | 0.120 | 0.115 | 0.112 | 0.109 | 0.109 |
| 标准差 | 0.298 | 0.305 | 0.306 | 0.306 | 0.306 |
| 右轨中间节点处横向位移/m | 均值 | 1.532×10-5 | 1.577×10-5 | 1.521×10-5 | 1.533×10-5 | 1.525×10-5 |
| 标准差 | 2.188×10-5 | 2.145×10-5 | 2.121×10-5 | 2.123×10-5 | 2.114×10-5 |
| 右轨中间节点处横向加速度/(m·s-2) | 均值 | 0.076 | 0.065 | 0.069 | 0.067 | 0.067 |
| 标准差 | 0.962 | 0.949 | 0.947 | 0.949 | 0.942 |
| 第一轮对右轮横向力/kN | 均值 | 5.445 | 5.405 | 5.515 | 5.512 | 5.505 |
| 标准差 | 4.090 | 3.945 | 3.902 | 3.900 | 3.883 |
| 第一轮对右轮竖向力/kN | 均值 | 80.301 | 78.322 | 77.011 | 76.871 | 76.391 |
| 标准差 | 21.367 | 19.899 | 19.011 | 18.893 | 18.757 |
), ArticleFig(id=1227653583798203126, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=表1, caption=
不同样本量下动力响应均值、标准差的最大值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 动力响应 | 样本量(MCM) |
|---|
| 500组 | 1000组 | 2000组 | 3000组 | 4000组 |
|---|
| 车体横向位移/m | 均值 | 1.845×10-2 | 1.744×10-2 | 1.708×10-2 | 1.694×10-2 | 1.697×10-2 |
| 标准差 | 2.612×10-2 | 2.643×10-2 | 2.623×10-2 | 2.619×10-2 | 2.608×10-2 |
| 车体竖向位移/m | 均值 | 6.390×10-3 | 6.299×10-3 | 6.174×10-3 | 6.113×10-3 | 6.081×10-3 |
| 标准差 | 1.489×10-2 | 1.520×10-2 | 1.518×10-2 | 1.520×10-2 | 1.516×10-2 |
| 车体横向加速度/(m·s-2) | 均值 | 0.159 | 0.150 | 0.148 | 0.147 | 0.146 |
| 标准差 | 0.409 | 0.419 | 0.417 | 0.418 | 0.417 |
| 车体竖向加速度/(m·s-2) | 均值 | 0.120 | 0.115 | 0.112 | 0.109 | 0.109 |
| 标准差 | 0.298 | 0.305 | 0.306 | 0.306 | 0.306 |
| 右轨中间节点处横向位移/m | 均值 | 1.532×10-5 | 1.577×10-5 | 1.521×10-5 | 1.533×10-5 | 1.525×10-5 |
| 标准差 | 2.188×10-5 | 2.145×10-5 | 2.121×10-5 | 2.123×10-5 | 2.114×10-5 |
| 右轨中间节点处横向加速度/(m·s-2) | 均值 | 0.076 | 0.065 | 0.069 | 0.067 | 0.067 |
| 标准差 | 0.962 | 0.949 | 0.947 | 0.949 | 0.942 |
| 第一轮对右轮横向力/kN | 均值 | 5.445 | 5.405 | 5.515 | 5.512 | 5.505 |
| 标准差 | 4.090 | 3.945 | 3.902 | 3.900 | 3.883 |
| 第一轮对右轮竖向力/kN | 均值 | 80.301 | 78.322 | 77.011 | 76.871 | 76.391 |
| 标准差 | 21.367 | 19.899 | 19.011 | 18.893 | 18.757 |
), ArticleFig(id=1227653585228460796, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Tab. 2, caption=
Relative error of maximum standard deviation of dynamic response for different screening radius
, figureFileSmall=null, figureFileBig=null, tableContent=
| 动力响应标准差最大值的相对误差 | 筛选半径r0 |
|---|
| 17.4 | 17.5 | 17.6 | 17.7 | 17.8 | 17.9 | 18.0 |
|---|
| 车体横向位移/m | 3.24% | 4.06% | 1.29% | 0.81% | 1.31% | 2.45% | 4.32% |
| 车体竖向位移/m | 0.50% | 0.98% | 2.28% | 0.66% | 2.30% | 2.78% | 3.47% |
| 车体横向加速度/(m·s-2) | 3.57% | 3.80% | 1.28% | 0.90% | 1.42% | 3.43% | 3.42% |
| 车体竖向加速度/(m·s-2) | 2.51% | 2.63% | 0.47% | 0.31% | 1.19% | 2.01% | 4.59% |
| 右轨中间节点处横向位移/m | 1.10% | 4.95% | 2.43% | 0.73% | 0.32% | 1.14% | 2.23% |
| 右轨中间节点处横向加速度/(m·s-2) | 2.41% | 3.57% | 1.65% | 0.71% | 1.14% | 2.46% | 2.98% |
| 第一轮对右轮横向力/kN | 1.09% | 2.49% | 0.74% | 0.19% | 0.73% | 1.79% | 3.21% |
| 第一轮对右轮竖向力/kN | 2.74% | 3.45% | 1.18% | 0.42% | 1.41% | 1.98% | 3.76% |
), ArticleFig(id=1227653585392038662, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=表2, caption=
不同筛选半径下动力响应标准差最大值的相对误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 动力响应标准差最大值的相对误差 | 筛选半径r0 |
|---|
| 17.4 | 17.5 | 17.6 | 17.7 | 17.8 | 17.9 | 18.0 |
|---|
| 车体横向位移/m | 3.24% | 4.06% | 1.29% | 0.81% | 1.31% | 2.45% | 4.32% |
| 车体竖向位移/m | 0.50% | 0.98% | 2.28% | 0.66% | 2.30% | 2.78% | 3.47% |
| 车体横向加速度/(m·s-2) | 3.57% | 3.80% | 1.28% | 0.90% | 1.42% | 3.43% | 3.42% |
| 车体竖向加速度/(m·s-2) | 2.51% | 2.63% | 0.47% | 0.31% | 1.19% | 2.01% | 4.59% |
| 右轨中间节点处横向位移/m | 1.10% | 4.95% | 2.43% | 0.73% | 0.32% | 1.14% | 2.23% |
| 右轨中间节点处横向加速度/(m·s-2) | 2.41% | 3.57% | 1.65% | 0.71% | 1.14% | 2.46% | 2.98% |
| 第一轮对右轮横向力/kN | 1.09% | 2.49% | 0.74% | 0.19% | 0.73% | 1.79% | 3.21% |
| 第一轮对右轮竖向力/kN | 2.74% | 3.45% | 1.18% | 0.42% | 1.41% | 1.98% | 3.76% |
), ArticleFig(id=1227653585517867791, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=EN, label=Tab. 3, caption=
The maximum value of dynamic responses for single and double random excitaions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 系统响应最大值 | 随机风荷载+随机轨道不平顺 | 随机风荷载+确定性轨道不平顺 | 随机轨道不平顺+确定性风荷载 |
|---|
| 车体横向加速度/(m·s-2) | 1.079 | 0.950 | 0.374 |
| 车体竖向加速度/(m·s-2) | 0.993 | 0.907 | 0.306 |
| 车体横向位移/m | 9.142×10-2 | 8.295×10-2 | 3.412×10-2 |
| 第一轮对左轮横向力/kN | 9.117 | 6.619 | 8.153 |
| 第一轮对左轮竖向力/kN | 66.517 | 58.202 | 70.668 |
), ArticleFig(id=1227653585647891224, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591033177965358, language=CN, label=表3, caption=
单、双重随机因素下系统响应最大值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 系统响应最大值 | 随机风荷载+随机轨道不平顺 | 随机风荷载+确定性轨道不平顺 | 随机轨道不平顺+确定性风荷载 |
|---|
| 车体横向加速度/(m·s-2) | 1.079 | 0.950 | 0.374 |
| 车体竖向加速度/(m·s-2) | 0.993 | 0.907 | 0.306 |
| 车体横向位移/m | 9.142×10-2 | 8.295×10-2 | 3.412×10-2 |
| 第一轮对左轮横向力/kN | 9.117 | 6.619 | 8.153 |
| 第一轮对左轮竖向力/kN | 66.517 | 58.202 | 70.668 |
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