Article(id=1227591814232863455, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591806980915649, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.202307022, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1688659200000, receivedDateStr=2023-07-07, revisedDate=1696176000000, revisedDateStr=2023-10-02, acceptedDate=null, acceptedDateStr=null, onlineDate=1770610296066, onlineDateStr=2026-02-09, pubDate=1757433600000, pubDateStr=2025-09-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770610296066, onlineIssueDateStr=2026-02-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770610296066, creator=13701087609, updateTime=1770610296066, updator=13701087609, issue=Issue{id=1227591806980915649, tenantId=1146029695717560320, journalId=1225147924628267009, year='2025', volume='38', issue='9', pageStart='1935', pageEnd='2204', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1770610294337, creator=13701087609, updateTime=1770610356968, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1227592069754057532, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591806980915649, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1227592069754057533, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591806980915649, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1967, endPage=1976, ext={EN=ArticleExt(id=1227591814497104616, articleId=1227591814232863455, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Random vibration analysis of vehicle systems with uncertain parameters under the action of road roughness, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
A polynomial dimensional decomposition pseudo-excitation method (PDD-PEM) was established in the frequency domain to quantify the uncertainty of random vibration power spectrum density for vehicles with uncertain parameters under random road excitation. Transforming stationary random vibration analysis into harmonic load analysis through pseudo-excitation method, and transforming double random problems into single random problems; At the same time, the polynomial dimensional decomposition method is used to construct a random Surrogate model, and the explicit function of the power spectrum density response expressed by the polynomial basis is given, which effectively realizes the probabilistic evaluation of the structural response in the uncertain parameter space. In numerical examples, the method established in this paper was used to analyze the random vibration of vehicle systems with uncertain parameters under road roughness. Compared with the Monte Carlo method, the correctness and effectiveness of the established method were verified, and the influence of uncertain parameters on the structural response statistical characteristics was further discussed. These works laid a certain foundation for considering the optimization and control problems of vehicle system parameters with uncertainty.
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针对具有不确定参数的车辆受到路面随机激励作用下的振动问题,在频域内建立了随机振动功率谱不确定性量化分析的多项式维数分解-虚拟激励法(polynomial dimensional decomposition pseudo-excitation method,PDD-PEM)。通过虚拟激励法将平稳随机振动分析转化为简谐载荷分析,将双随机问题转化为单随机问题;同时应用多项式维数分解方法构建了随机代理模型,给出以多项式基底表达功率谱响应的显式函数,有效实现了结构响应在不确定性参数空间的概率评估。数值算例中,采用本文建立的方法进行路面不平顺作用下具有不确定参数车辆系统随机振动分析,与蒙特卡罗方法比较验证了本文方法的正确性和有效性,进一步讨论了不确定参数对结构响应统计特性的影响,为具有不确定性车辆系统的参数优化和控制问题的研究奠定了一定的基础。
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1.School of Mechanics and Aerospace Engineering, Dalian University of Technology, Dalian 116023, China
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1.大连理工大学力学与航空航天学院,辽宁 大连 116023
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2.State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Dalian University of Technology, Dalian 116023, China
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Vehicle-structure coupling system, figureFileSmall=D3bUWYzx9Biw6p4twkfalQ==, figureFileBig=lWKdYWqZNg/TWfsXOxvRuQ==, tableContent=null), ArticleFig(id=1227653067135447551, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图1, caption=
车辆-结构耦合系统, figureFileSmall=D3bUWYzx9Biw6p4twkfalQ==, figureFileBig=lWKdYWqZNg/TWfsXOxvRuQ==, tableContent=null), ArticleFig(id=1227653067282248199, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 2, caption=
Displacement PSD of observation point p under B-level road surface irregularity, figureFileSmall=V5mk3mSUYHsE6Y5748QwTQ==, figureFileBig=HC/JQ6Chfz8paWSmJyU6Ew==, tableContent=null), ArticleFig(id=1227653067395494414, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图2, caption=
路面B等级下观测点p的位移谱, figureFileSmall=V5mk3mSUYHsE6Y5748QwTQ==, figureFileBig=HC/JQ6Chfz8paWSmJyU6Ew==, tableContent=null), ArticleFig(id=1227653067508740630, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 3, caption=
Acceleration PSD of observation point p under B-level road surface irregularity, figureFileSmall=Y4zVWO7gq6c0WttedMtaTA==, figureFileBig=IWJthPdrP5jOaEXEXqzVjg==, tableContent=null), ArticleFig(id=1227653067663929890, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图3, caption=
路面B等级下观测点p的加速度谱, figureFileSmall=Y4zVWO7gq6c0WttedMtaTA==, figureFileBig=IWJthPdrP5jOaEXEXqzVjg==, tableContent=null), ArticleFig(id=1227653067793953325, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 4, caption=
Acceleration PSD of point a at different road surface, figureFileSmall=XL+gcnQnNqnjZoZt9kZmAg==, figureFileBig=aZipJAtUYPBE4R3FxYObsQ==, tableContent=null), ArticleFig(id=1227653067894616630, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图4, caption=
不同路面等级下的a点加速度谱, figureFileSmall=XL+gcnQnNqnjZoZt9kZmAg==, figureFileBig=aZipJAtUYPBE4R3FxYObsQ==, tableContent=null), ArticleFig(id=1227653067999474235, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 5, caption=
Acceleration PSD of point b at different road surface irregularity, figureFileSmall=G5J/cOBklNBep8Ea2Lv0Qg==, figureFileBig=nXwoSBpOEgddi/YM/T+liw==, tableContent=null), ArticleFig(id=1227653068104331839, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图5, caption=
不同路面等级下b点的加速度谱, figureFileSmall=G5J/cOBklNBep8Ea2Lv0Qg==, figureFileBig=nXwoSBpOEgddi/YM/T+liw==, tableContent=null), ArticleFig(id=1227653068209189447, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 6, caption=
Mean of acceleration PSD at different positions, figureFileSmall=ZZ8L8JGsjeINpWp453U7kA==, figureFileBig=DFnBThz6vY1GjQ3kagQcog==, tableContent=null), ArticleFig(id=1227653068318241360, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图6, caption=
不同位置处的加速度功率谱均值, figureFileSmall=ZZ8L8JGsjeINpWp453U7kA==, figureFileBig=DFnBThz6vY1GjQ3kagQcog==, tableContent=null), ArticleFig(id=1227653068460847704, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 7, caption=
Standard deviation of acceleration PSD at different positions, figureFileSmall=kVtp1+zVZfG1a0RvZKSUmQ==, figureFileBig=XRUlbIMtTD/glu0jxKIRYg==, tableContent=null), ArticleFig(id=1227653068590871135, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图7, caption=
不同位置处的加速度功率谱标准差, figureFileSmall=kVtp1+zVZfG1a0RvZKSUmQ==, figureFileBig=XRUlbIMtTD/glu0jxKIRYg==, tableContent=null), ArticleFig(id=1227653068720894566, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 8, caption=
COV=0.15, mean of acceleration PSD by different methods, figureFileSmall=QIfd4Z9zIroqu/ZkM58xzA==, figureFileBig=OEyhMObEJvdWj2H7sBZoKw==, tableContent=null), ArticleFig(id=1227653068926415470, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图8, caption=
变异系数为0.15时,不同方法计算的加速度功率谱均值, figureFileSmall=QIfd4Z9zIroqu/ZkM58xzA==, figureFileBig=OEyhMObEJvdWj2H7sBZoKw==, tableContent=null), ArticleFig(id=1227653069102576248, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 9, caption=
COV=0.3, mean of acceleration PSD by different methods, figureFileSmall=hgmFwjj90oTChUMCYCYeUg==, figureFileBig=dTKZ/XtJCQWtulRDe5lgkg==, tableContent=null), ArticleFig(id=1227653069203239549, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图9, caption=
变异系数为0.3时,不同方法计算的加速度功率谱均值, figureFileSmall=hgmFwjj90oTChUMCYCYeUg==, figureFileBig=dTKZ/XtJCQWtulRDe5lgkg==, tableContent=null), ArticleFig(id=1227653069341651591, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 10, caption=
PDF of acceleration PSD at point a, figureFileSmall=1tYOmVLLSBcod6KXFj2WSQ==, figureFileBig=M4l5SG0+havVIv7dU2SxDQ==, tableContent=null), ArticleFig(id=1227653069454897802, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图10, caption=
a点加速度谱概率密度, figureFileSmall=1tYOmVLLSBcod6KXFj2WSQ==, figureFileBig=M4l5SG0+havVIv7dU2SxDQ==, tableContent=null), ArticleFig(id=1227653069580726930, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 11, caption=
PDF of acceleration PSD at point b, figureFileSmall=UUOAoZZuiM2rMcE/p1p+RQ==, figureFileBig=W3Dpimg1H/auMfmoH36/xQ==, tableContent=null), ArticleFig(id=1227653069710750361, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图11, caption=
b点加速度谱概率密度, figureFileSmall=UUOAoZZuiM2rMcE/p1p+RQ==, figureFileBig=W3Dpimg1H/auMfmoH36/xQ==, tableContent=null), ArticleFig(id=1227653069844968099, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 12, caption=
PDF of acceleration PSD at point a at 10.6 Hz, figureFileSmall=A93lZft61FIlgQYiYfT7tA==, figureFileBig=597WYIwWxpdVUgXD0rnQeg==, tableContent=null), ArticleFig(id=1227653069970797226, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图12, caption=
a点10.6 Hz处加速度功率谱标准差概率密度, figureFileSmall=A93lZft61FIlgQYiYfT7tA==, figureFileBig=597WYIwWxpdVUgXD0rnQeg==, tableContent=null), ArticleFig(id=1227653071308780207, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 13, caption=
PDF of acceleration PSD at point b at 2.2 Hz, figureFileSmall=8pxKLgerEzmxvfuJiucrAw==, figureFileBig=AubNraWrd3CQDNsxU+buiQ==, tableContent=null), ArticleFig(id=1227653071409443512, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图13, caption=
b点2.2 Hz处加速度功率谱标准差概率密度, figureFileSmall=8pxKLgerEzmxvfuJiucrAw==, figureFileBig=AubNraWrd3CQDNsxU+buiQ==, tableContent=null), ArticleFig(id=1227653071505912511, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 14, caption=
PDF of root mean square acceleration at point a, figureFileSmall=qXnp2EJj8dBCsIRBsw5wxA==, figureFileBig=S8ZOhkI7BDa3DuSLNJviXA==, tableContent=null), ArticleFig(id=1227653071635935944, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图14, caption=
a点加速度均方根概率密度, figureFileSmall=qXnp2EJj8dBCsIRBsw5wxA==, figureFileBig=S8ZOhkI7BDa3DuSLNJviXA==, tableContent=null), ArticleFig(id=1227653071791125196, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Fig. 15, caption=
PDF of root mean square acceleration at point b, figureFileSmall=hL4jMDr1jcqtXXZ+ZpXIYA==, figureFileBig=Ue1c/O4VC/P/+jIQT1wxEQ==, tableContent=null), ArticleFig(id=1227653071875011283, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=图15, caption=
b点加速度均方根概率密度, figureFileSmall=hL4jMDr1jcqtXXZ+ZpXIYA==, figureFileBig=Ue1c/O4VC/P/+jIQT1wxEQ==, tableContent=null), ArticleFig(id=1227653071958897370, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Tab. 1, caption=
Root mean square acceleration response of observation point at different road surface levels
, figureFileSmall=null, figureFileBig=null, tableContent=
| 路面等级 | 加速度响应均方根 |
|---|
| 本文结果/(m·s−2) | 文献[16]结果/(m·s−2) |
|---|
| A | 2.9027 | 2.9681 |
| B | 5.8054 | 5.7991 |
| C | 11.611 | 11.561 |
| D | 23.222 | 23.153 |
), ArticleFig(id=1227653072059560670, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=表1, caption=
不同路面等级下观测点加速度响应均方根
, figureFileSmall=null, figureFileBig=null, tableContent=
| 路面等级 | 加速度响应均方根 |
|---|
| 本文结果/(m·s−2) | 文献[16]结果/(m·s−2) |
|---|
| A | 2.9027 | 2.9681 |
| B | 5.8054 | 5.7991 |
| C | 11.611 | 11.561 |
| D | 23.222 | 23.153 |
), ArticleFig(id=1227653072210555625, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Tab. 2, caption=
Statistical characteristics of random parameters in vehicle models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 随机参数 | 均值/(N•m−1) | 变异系数(COV) |
|---|
| Kc1 | 3.7×107 | 0.15 |
| Kc2 | 3.7×107 | 0.15 |
| Ks1 | 2.47×106 | 0.15 |
| Ks2 | 4.23×106 | 0.15 |
| Kt1 | 3.74×106 | 0.15 |
| Kt2 | 4.60×106 | 0.15 |
), ArticleFig(id=1227653072332190448, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=表2, caption=
车辆模型随机参数的统计特性
, figureFileSmall=null, figureFileBig=null, tableContent=
| 随机参数 | 均值/(N•m−1) | 变异系数(COV) |
|---|
| Kc1 | 3.7×107 | 0.15 |
| Kc2 | 3.7×107 | 0.15 |
| Ks1 | 2.47×106 | 0.15 |
| Ks2 | 4.23×106 | 0.15 |
| Kt1 | 3.74×106 | 0.15 |
| Kt2 | 4.60×106 | 0.15 |
), ArticleFig(id=1227653072445436659, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=EN, label=Tab. 3, caption=
Statistical characteristics of root mean square of acceleration response calculated by different methods
, figureFileSmall=null, figureFileBig=null, tableContent=
| 计算方法 | a点/(m·s−2) | b点/(m·s−2) |
|---|
| 均值 | 标准差 | 均值 | 标准差 |
|---|
| MC方法(样本容量:104) | 10.439 | 1.694 | 5.012 | 0.492 |
| PDD-PEM方法 | 10.432 | 1.685 | 5.019 | 0.491 |
), ArticleFig(id=1227653072550294265, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591814232863455, language=CN, label=表3, caption=
不同方法计算出的加速度响应均方根的统计特征
, figureFileSmall=null, figureFileBig=null, tableContent=
| 计算方法 | a点/(m·s−2) | b点/(m·s−2) |
|---|
| 均值 | 标准差 | 均值 | 标准差 |
|---|
| MC方法(样本容量:104) | 10.439 | 1.694 | 5.012 | 0.492 |
| PDD-PEM方法 | 10.432 | 1.685 | 5.019 | 0.491 |
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