Article(id=1319293600240877638, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1319293542573392487, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1005-0329.2025.07.015, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1730563200000, receivedDateStr=2024-11-03, revisedDate=1745510400000, revisedDateStr=2025-04-25, acceptedDate=null, acceptedDateStr=null, onlineDate=1792473705586, onlineDateStr=2026-10-20, pubDate=1753804800000, pubDateStr=2025-07-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792473705586, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792473705586, creator=13701087609, updateTime=1792473705586, updator=13701087609, issue=Issue{id=1319293542573392487, tenantId=1146029695717560320, journalId=1316781260334530699, year='2025', volume='53', issue='7', pageStart='1', pageEnd='118', issueExtLink='null', onlineDate='null', pubDate='1753804800000', pubDateStr='2025-07-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792473691838, creator='13701087609', updateTime=1792473691838, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=111, endPage=118, ext={EN=ArticleExt(id=1319293600425427015, articleId=1319293600240877638, tenantId=1146029695717560320, journalId=1316781260334530699, language=EN, title=Research on the virtual‑real mapping method of three‑dimensional model of nuclear power valve piping system based on inverse response surface, columnId=null, journalTitle=Fluid Machinery, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To enhance the efficiency and accuracy of three‑dimensional finite element model updating for nuclear power valve piping systems and ensure the reliability of analysis results,a three‑dimensional finite element model updating technique based on an inverse response surface model is proposed. First,a radial basis function‑backpropagation neural network is employed to fit an inverse response surface model that directly maps the resonant frequencies,anti‑resonant frequencies,and structural parameters of the valve piping system. Then,the measured frequencies are used as inputs to solve for the correction parameters,addressing challenges such as the difficulty in modeling vibration control equations for the three‑dimensional finite element model,the uncertainty of results from intelligent optimization algorithms,and the inefficiency of iterative updating processes. The proposed method is validated using an actual valve piping system. The results demonstrate that after measuring the actual dynamic characteristics,the trained inverse response surface model can complete the three‑dimensional model updating within seconds. The maximum error between the calculated frequencies of the updated model and the measured frequencies is reduced from 15.43% to 3.53%.The proposed method can be applied in engineering practice to update the three‑dimensional finite element model of nuclear power valve piping systems using measured frequencies.
, authors=Ruiyuan XUE
1, 2, Xiaoqiao MENG
1, Rurong WU
3, Xiheng ZHANG
1, 2, Yongnan ZHANG
1, authorsList=Ruiyuan XUE, Xiaoqiao MENG, Rurong WU, Xiheng ZHANG, Yongnan ZHANG, authorCompany=null, correspAuthors=Xiaoqiao MENG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1319293602476441692, articleId=1319293600240877638, tenantId=1146029695717560320, journalId=1316781260334530699, language=CN, title=基于逆响应面的核电阀门管系三维模型虚实映射方法研究, columnId=1317484300472271469, journalTitle=流体机械, columnName=应用技术, runingTitle=null, highlight=null, articleAbstract=
为了提高核电阀门管系三维有限元模型修正的效率和精度,确保分析结果的准确性,提出一种基于逆响应面模型的三维有限元模型修正(FEMU)技术。通过径向基函数-反向传播神经网络拟合阀门管系共振频率、反共振频率与结构参数直接映射的逆响应面模型,以实测频率为输入求解修正参数,解决了三维有限元模型振动控制方程建模难度大、智能优化算法计算结果不确定、修正过程反复迭代效率低的问题。以某实际阀门管系为例,对提出方法(FEMU方法)进行验证,结果表明,在试验测得实际动态特性后,通过训练后的逆向响应面模型,数秒后便可完成三维模型修正,修正后模型的计算频率与实测频率最大误差由15.43%降低至3.53%。该方法可在工程实践中利用实测频率实现核电阀门管系三维有限元模型修正。
, authors=薛睿渊
1, 2, 孟晓桥
1, 吴如荣
3, 张希恒
1, 2, 张永楠
1, authorsList=薛睿渊, 孟晓桥, 吴如荣, 张希恒, 张永楠, authorCompany=null, correspAuthors=孟晓桥, authorNote=
, correspAuthorsNote=
孟晓桥(1997),男,硕士研究生,主要从事阀门本质安全方面的研究工作,通信地址:730050甘肃省兰州市七里河区龚家坪北路211号兰州理工大学彭家坪校区,E-mail:
mxqsuper@163.com。
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作者向本刊所投稿件一经本刊录用,则该论文的复制权、发行权、信息网络传播权、翻译权、汇编权等权利视为自动转让给本刊。本刊为国内各主要数据库收录期刊,本刊所发表的稿件将同时通过互联网进行网络出版或提供信息服务。, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=ZgqWmKrUoEB761zBsGREwA==, magXml=fLBJ74zPfVajHu//MNvwbA==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=sQ4KOnVb5ZsFB1kP4gnHNw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=CfhkrWjU0aTXtywD50kuDg==, mapNumber=null, fund=null)}, authors=[Author(id=1319293684126958332, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=xrywyy@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1319293684240204543, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, authorId=1319293684126958332, language=EN, stringName=Ruiyuan XUE, firstName=Ruiyuan, middleName=null, lastName=XUE, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1School of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050,China
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1兰州理工大学 石油化工学院,兰州 730050
2兰州理工大学 温州泵阀工程研究院,浙江 温州 325024, bio={"content":"
薛睿渊(1993),男,副教授,主要从事阀门与密封技术方面的研究工作,E-mail:xrywyy@163.com。
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薛睿渊(1993),男,副教授,主要从事阀门与密封技术方面的研究工作,E-mail:xrywyy@163.com。
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1兰州理工大学 石油化工学院,兰州 730050
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Flowchart of the FEMU process based on the RBF-BPNN inverse response surface model, figureFileSmall=O2M6xHxHN+8Y/6wyaXifBA==, figureFileBig=sQ4KOnVb5ZsFB1kP4gnHNw==, tableContent=null), ArticleFig(id=1319293686001812255, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=图1, caption=
基于RBF-BPNN逆响应面模型的FEMU流程, figureFileSmall=O2M6xHxHN+8Y/6wyaXifBA==, figureFileBig=sQ4KOnVb5ZsFB1kP4gnHNw==, tableContent=null), ArticleFig(id=1319293686110864160, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Fig.2, caption=
Vibration test bench for valve pipeline system and associated measurement points, figureFileSmall=lqR93OxyEuqkJbJGTlyBBw==, figureFileBig=g9AwmxNEYl7YVgPl7PdjCw==, tableContent=null), ArticleFig(id=1319293686182167329, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=图2, caption=
阀门管系振动试验台及相关测点, figureFileSmall=lqR93OxyEuqkJbJGTlyBBw==, figureFileBig=g9AwmxNEYl7YVgPl7PdjCw==, tableContent=null), ArticleFig(id=1319293686249276194, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Fig.3, caption=
Valve piping system fem and constraints, figureFileSmall=1DrLxNb/Zb6ZyN3/pF1l9A==, figureFileBig=9uUZ9/2TKvROlUfv6oFAMQ==, tableContent=null), ArticleFig(id=1319293686333162275, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=图3, caption=
阀门管系FEM及约束条件, figureFileSmall=1DrLxNb/Zb6ZyN3/pF1l9A==, figureFileBig=9uUZ9/2TKvROlUfv6oFAMQ==, tableContent=null), ArticleFig(id=1319293686404465444, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Fig.4, caption=
Modal frequencies and modal shapes of the DN80 valve piping system, figureFileSmall=zhyKLlvOtZ/iliOAYygLOg==, figureFileBig=Qkr4TKUur/fU0IULzjQS2w==, tableContent=null), ArticleFig(id=1319293686475768613, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=图4, caption=
DN80阀门管系模态频率和模态振型, figureFileSmall=zhyKLlvOtZ/iliOAYygLOg==, figureFileBig=Qkr4TKUur/fU0IULzjQS2w==, tableContent=null), ArticleFig(id=1319293686563848998, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Fig.5, caption=
Spearman correlation matrix, figureFileSmall=g5FIYTuHWvl4dWGK+iHRXw==, figureFileBig=AYFrlWp9K7vh2znIEH6QWw==, tableContent=null), ArticleFig(id=1319293686664512295, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=图5, caption=
Spearman相关性矩阵, figureFileSmall=g5FIYTuHWvl4dWGK+iHRXw==, figureFileBig=AYFrlWp9K7vh2znIEH6QWw==, tableContent=null), ArticleFig(id=1319293686727426856, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Fig.6, caption=
Evaluation results of the effectiveness of RBF-BPNN, figureFileSmall=cCWsEpx+xnz6sZMa6WsI8A==, figureFileBig=9dYhtZQUsrf+WRyU1Npazw==, tableContent=null), ArticleFig(id=1319293686790341417, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=图6, caption=
RBF-BPNN有效性评价结果, figureFileSmall=cCWsEpx+xnz6sZMa6WsI8A==, figureFileBig=9dYhtZQUsrf+WRyU1Npazw==, tableContent=null), ArticleFig(id=1319293686857450282, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Fig.7, caption=
Fitting results of RBF-BPNN, figureFileSmall=iFdwZ26t5rMwg9XAVHe5UQ==, figureFileBig=1Hqe/yYoU4w2WoxesWp7Kw==, tableContent=null), ArticleFig(id=1319293686932947755, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=图7, caption=
RBF-BPNN拟合结果, figureFileSmall=iFdwZ26t5rMwg9XAVHe5UQ==, figureFileBig=1Hqe/yYoU4w2WoxesWp7Kw==, tableContent=null), ArticleFig(id=1319293687000056620, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Fig.8, caption=
Evaluation results of the effectiveness of different surrogate models, figureFileSmall=jvp8xJvfnk1bPxwFUHdx8Q==, figureFileBig=LLgsPK8oT5q2W2OhZuOjog==, tableContent=null), ArticleFig(id=1319293687079748397, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=图8, caption=
不同代理模型有效性评价结果, figureFileSmall=jvp8xJvfnk1bPxwFUHdx8Q==, figureFileBig=LLgsPK8oT5q2W2OhZuOjog==, tableContent=null), ArticleFig(id=1319293687163634478, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Fig.9, caption=
Prediction results of different surrogate models for T1, figureFileSmall=0omXVZIWxRit1gzFtJ2Kww==, figureFileBig=Arwft3ywwqitmcJvJSuaig==, tableContent=null), ArticleFig(id=1319293687268492079, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=图9, caption=
不同代理模型对T1的预测结果, figureFileSmall=0omXVZIWxRit1gzFtJ2Kww==, figureFileBig=Arwft3ywwqitmcJvJSuaig==, tableContent=null), ArticleFig(id=1319293687343989552, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Fig.10, caption=
Measured and simulated modal frequencies and relative errors of piping system Ⅰ, figureFileSmall=VB7h6ySH9iyh4kesO6VCGQ==, figureFileBig=wVFOr8KUiyj4MCwsAQT+Aw==, tableContent=null), ArticleFig(id=1319293687406904113, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=图10, caption=
管系Ⅰ实测、仿真模态频率及相对误差, figureFileSmall=VB7h6ySH9iyh4kesO6VCGQ==, figureFileBig=wVFOr8KUiyj4MCwsAQT+Aw==, tableContent=null), ArticleFig(id=1319293687490790194, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Tab.1, caption=
Material parameters of DN80 valve piping system
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 材料参数 | 初始值 | 初始设计变量 | 上限/下限 |
|---|
| 阀门 | 弹性模量/Pa | 1.85×1011 | T1 | 1.48×1011/2.22×1011 |
| 材料密度/(kg⋅m-3) | 7 619.4 | | |
| 泊松比 | 0.3 | | |
| 法兰 | 弹性模量/Pa | 2×1011 | T2 | 1.6×1011/2.4×1011 |
| 材料密度/(kg⋅m-3) | 7 850 | | |
| 泊松比 | 0.3 | | |
| 管道 | 弹性模量/Pa | 2.05×1011 | | |
| 材料密度/(kg⋅m-3) | 7 393 | | |
| 泊松比 | 0.31 | | |
| 扭动弹簧 | 左端y方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S1 | 5×105/1.5×106 |
| 左端x方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S2 | 5×105/1.5×106 |
| 左端z方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S3 | 5×105/1.5×106 |
| 右端y方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S4 | 5×105/1.5×106 |
| 右端x方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S5 | 5×105/1.5×106 |
| 右端z方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S6 | 5×105/1.5×106 |
| 平动弹簧 | 左端y方向-刚度系数/(N⋅mm-1) | 1×1010 | P1 | 5×109/1.5×1010 |
| 左端x方向-刚度系数/(N⋅mm-1) | 1×1010 | P2 | 5×109/1.5×1010 |
| 左端z方向-刚度系数/(N⋅mm-1) | 1×1010 | P3 | 5×109/1.5×1010 |
| 右端y方向-刚度系数/(N⋅mm-1) | 1×1010 | P4 | 5×109/1.5×1010 |
| 右端x方向-刚度系数/(N⋅mm-1) | 1×1010 | P5 | 5×109/1.5×1010 |
| 右端z方向-刚度系数/(N⋅mm-1) | 1×1010 | P6 | 5×109/1.5×1010 |
), ArticleFig(id=1319293687557899059, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=表1, caption=
DN80阀门管系材料参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 材料参数 | 初始值 | 初始设计变量 | 上限/下限 |
|---|
| 阀门 | 弹性模量/Pa | 1.85×1011 | T1 | 1.48×1011/2.22×1011 |
| 材料密度/(kg⋅m-3) | 7 619.4 | | |
| 泊松比 | 0.3 | | |
| 法兰 | 弹性模量/Pa | 2×1011 | T2 | 1.6×1011/2.4×1011 |
| 材料密度/(kg⋅m-3) | 7 850 | | |
| 泊松比 | 0.3 | | |
| 管道 | 弹性模量/Pa | 2.05×1011 | | |
| 材料密度/(kg⋅m-3) | 7 393 | | |
| 泊松比 | 0.31 | | |
| 扭动弹簧 | 左端y方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S1 | 5×105/1.5×106 |
| 左端x方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S2 | 5×105/1.5×106 |
| 左端z方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S3 | 5×105/1.5×106 |
| 右端y方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S4 | 5×105/1.5×106 |
| 右端x方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S5 | 5×105/1.5×106 |
| 右端z方向-刚度系数/[N⋅mm⋅(°)-1] | 1×106 | S6 | 5×105/1.5×106 |
| 平动弹簧 | 左端y方向-刚度系数/(N⋅mm-1) | 1×1010 | P1 | 5×109/1.5×1010 |
| 左端x方向-刚度系数/(N⋅mm-1) | 1×1010 | P2 | 5×109/1.5×1010 |
| 左端z方向-刚度系数/(N⋅mm-1) | 1×1010 | P3 | 5×109/1.5×1010 |
| 右端y方向-刚度系数/(N⋅mm-1) | 1×1010 | P4 | 5×109/1.5×1010 |
| 右端x方向-刚度系数/(N⋅mm-1) | 1×1010 | P5 | 5×109/1.5×1010 |
| 右端z方向-刚度系数/(N⋅mm-1) | 1×1010 | P6 | 5×109/1.5×1010 |
), ArticleFig(id=1319293687637590836, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Tab.2, caption=
Initial ERM modal error analysis results
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 实测值/Hz | 仿真值/Hz | R/% | MAC |
|---|
共振 频率 | ωt1 | 8.91 | ωf1 | 8.08 | 9.28 | 0.91 |
| ωt2 | 9.03 | ωf2 | 9.76 | 8.13 | 0.98 |
| ωt3 | 30.52 | ωf3 | 26.55 | 13.00 | 0.94 |
| — | — | ωf4 | 32.36 | — | — |
| ωt4 | 39.79 | ωf5 | 43.74 | 9.94 | 0.94 |
| — | — | ωf6 | 52.47 | — | — |
| — | — | ωf7 | 72.54 | — | — |
| — | — | ωf8 | 102.93 | — | — |
| 反共振频率 | ωat1 | 28.82 | ωaf1 | 25.91 | 10.09 | — |
| ωat2 | 37.03 | ωaf2 | 42.74 | 15.43 | — |
), ArticleFig(id=1319293687717282613, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=表2, caption=
初始ERM模态误差分析结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 实测值/Hz | 仿真值/Hz | R/% | MAC |
|---|
共振 频率 | ωt1 | 8.91 | ωf1 | 8.08 | 9.28 | 0.91 |
| ωt2 | 9.03 | ωf2 | 9.76 | 8.13 | 0.98 |
| ωt3 | 30.52 | ωf3 | 26.55 | 13.00 | 0.94 |
| — | — | ωf4 | 32.36 | — | — |
| ωt4 | 39.79 | ωf5 | 43.74 | 9.94 | 0.94 |
| — | — | ωf6 | 52.47 | — | — |
| — | — | ωf7 | 72.54 | — | — |
| — | — | ωf8 | 102.93 | — | — |
| 反共振频率 | ωat1 | 28.82 | ωaf1 | 25.91 | 10.09 | — |
| ωat2 | 37.03 | ωaf2 | 42.74 | 15.43 | — |
), ArticleFig(id=1319293687851500342, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Tab.3, caption=
Correlation judgment
, figureFileSmall=null, figureFileBig=null, tableContent=
| 相关性绝对值取值 | 反应程度 |
|---|
| 0.8~1 | 极强 |
| 0.6~0.8 | 强 |
| 0.4~0.6 | 中等 |
| 0.2~0.4 | 弱 |
| 0~0.2 | 极弱或无关 |
), ArticleFig(id=1319293688023466807, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=表3, caption=
相关性判断
, figureFileSmall=null, figureFileBig=null, tableContent=
| 相关性绝对值取值 | 反应程度 |
|---|
| 0.8~1 | 极强 |
| 0.6~0.8 | 强 |
| 0.4~0.6 | 中等 |
| 0.2~0.4 | 弱 |
| 0~0.2 | 极弱或无关 |
), ArticleFig(id=1319293688157684536, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Tab.4, caption=
Comparison of parameters to be corrected before and after correction
, figureFileSmall=null, figureFileBig=null, tableContent=
| 待修正参数 | 修正前 | 修正后 | 相对变化率/% |
|---|
| T1 | 弹性模量/Pa | 1.85×1011 | 1.76×1011 | 4.40 |
| S1 | 扭簧刚度/[N·mm·(°)-1] | 1.00×106 | 9.54×105 | 4.60 |
| S3 | 扭簧刚度/[N·mm·(°)-1] | 1.00×106 | 9.65×105 | 3.50 |
| S4 | 扭簧刚度/[N·mm·(°)-1] | 1.00×106 | 9.25×105 | 7.48 |
| S6 | 扭簧刚度/[N·mm·(°)-1] | 1.00×106 | 9.75×105 | 2.46 |
), ArticleFig(id=1319293688455480121, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=表4, caption=
待修正参数修正前后对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 待修正参数 | 修正前 | 修正后 | 相对变化率/% |
|---|
| T1 | 弹性模量/Pa | 1.85×1011 | 1.76×1011 | 4.40 |
| S1 | 扭簧刚度/[N·mm·(°)-1] | 1.00×106 | 9.54×105 | 4.60 |
| S3 | 扭簧刚度/[N·mm·(°)-1] | 1.00×106 | 9.65×105 | 3.50 |
| S4 | 扭簧刚度/[N·mm·(°)-1] | 1.00×106 | 9.25×105 | 7.48 |
| S6 | 扭簧刚度/[N·mm·(°)-1] | 1.00×106 | 9.75×105 | 2.46 |
), ArticleFig(id=1319293688535171898, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=EN, label=Tab.5, caption=
Modal frequencies,equivalent masses of the vibration modes and MAC distributions of pipeline system Ⅱ
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模态参数 | z方向1阶 | z方向2阶 |
|---|
| 实测频率/Hz | 8.85 | 25.62 |
| FEM频率/Hz | 8.56 | 24.75 |
| 频率误差/% | 3.20 | 3.40 |
| FEM等效质量/kg | 56.55 | 0.41 |
| 二维等效质量/kg | 55.92 | 0.42 |
| 等效质量误差/% | 1.10 | 2.70 |
| MAC | 0.95 | 0.96 |
), ArticleFig(id=1319293688619057979, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1319293600240877638, language=CN, label=表5, caption=
管系Ⅱ模态频率、振型等效质量和MAC分布
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模态参数 | z方向1阶 | z方向2阶 |
|---|
| 实测频率/Hz | 8.85 | 25.62 |
| FEM频率/Hz | 8.56 | 24.75 |
| 频率误差/% | 3.20 | 3.40 |
| FEM等效质量/kg | 56.55 | 0.41 |
| 二维等效质量/kg | 55.92 | 0.42 |
| 等效质量误差/% | 1.10 | 2.70 |
| MAC | 0.95 | 0.96 |
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