Article(id=1227620265962701681, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227620260010979924, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.2024.05.015, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1655308800000, receivedDateStr=2022-06-16, revisedDate=1660924800000, revisedDateStr=2022-08-20, acceptedDate=null, acceptedDateStr=null, onlineDate=1770617079486, onlineDateStr=2026-02-09, pubDate=1716825600000, pubDateStr=2024-05-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770617079486, onlineIssueDateStr=2026-02-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770617079486, creator=13701087609, updateTime=1770617079486, updator=13701087609, issue=Issue{id=1227620260010979924, tenantId=1146029695717560320, journalId=1225147924628267009, year='2024', volume='37', issue='5', pageStart='729', pageEnd='902', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1770617078068, creator=13701087609, updateTime=1770795280844, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228367696677499202, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227620260010979924, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228367696677499203, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227620260010979924, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=864, endPage=874, ext={EN=ArticleExt(id=1227620266180805494, articleId=1227620265962701681, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Study on the steady state statistical characteristics of variable-section piezoelectric cantilever energy harvester under Gaussian white noise excitation, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Environmental vibration is one of the non-periodic and random broadband excitations. It is of great significance to study the characteristics of vibration energy harvesters under environmental vibrations. In this paper,the modified stochastic averaging method is used to solve the following parameters of piezoelectric beam with a variable cross-section: steady-state probability density function of equivalent amplitude,displacement and velocity,joint probability density function of displacement,and velocity and steady-state mean square output voltage. Then the study investigates the energy acquisition efficiency of a piezoelectric beam with a variable cross-section under Gaussian white noise excitation. The results show that when the load resistance reaches a certain value,the variable section piezoelectric beam with a section coefficient β>0 can produce better steady-state mean square output voltage than the constant section piezoelectric beam with β=0; when the section coefficient β>0,with the increase of the reciprocal of the product of resistance and capacitance,the mean square voltage of the variable-section piezoelectric beam shows a gradually decreasing trend. The trend shows the following rules: when the reciprocal value of the resistance and capacitance reaches a certain value,the larger the β value is,the higher the mean square voltage will become; with the increase of the noise intensity,the mean square voltage of the variable-section piezoelectric beams shows a trend of increasing gradually; when the noise intensity reaches a certain value,the larger the β value is,the higher the mean square voltage will become. The research results in this paper can provide a theoretical basis for the design and application of the variable-section piezoelectric cantilever energy harvesting system.
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环境振动是一种非周期、随机的宽频激励,研究振动能量采集器在环境振动下的能量采集特性具有重要意义。本文采用改进随机平均法,求解了变截面压电梁在高斯白噪声激励下的等效振幅、位移、速度的稳态概率密度函数,位移与速度的联合概率密度函数以及稳态均方输出电压,随后研究了变截面压电梁的能量采集效能。结果表明:负载电阻一定时,截面系数β>0时的变截面压电梁相比β=0时的等截面压电梁有更好的稳态均方输出电压;截面系数β>0时,随着电阻电容乘积的倒数的增加,变截面压电梁的均方电压均呈现逐渐减小的趋势,当电阻电容乘积的倒数值一定时,β值越大,均方电压也越高;随着噪声强度的增加,变截面压电梁的均方电压均呈现逐渐增大的趋势,当噪声强度一定时,β值越大,均方电压也越高。本文研究结果可为变截面压电悬臂梁能量采集系统的设计及应用提供理论依据。
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, authorsList=周坤涛, 杨涛, 葛根, 郝淑英, 冯晶晶, 张琪昌)}, authors=[Author(id=1227675699272680273, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=kuntaozhou@tjut.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1227675699385926488, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, authorId=1227675699272680273, language=EN, stringName=Kun-tao ZHOU, firstName=Kun-tao, middleName=null, lastName=ZHOU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1School of Mechanical Engineering, Tiangong University, Tianjin 300387, China
2Engineering Training Center, Tianjin University of Technology, Tianjin 300384, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1227675699486589786, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, authorId=1227675699272680273, language=CN, stringName=周坤涛, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1天津工业大学机械工程学院,天津 300387
2天津理工大学工程训练中心,天津 300384, bio={"content":"
周坤涛(1985—),男,博士研究生,实验师。电话:(022)60214595;E-mail:kuntaozhou@tjut.edu.cn。
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周坤涛(1985—),男,博士研究生,实验师。电话:(022)60214595;E-mail:kuntaozhou@tjut.edu.cn。
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3School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300384, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1227675700321256309, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, authorId=1227675700119929715, language=CN, stringName=郝淑英, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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International Journal of Non-linear Mechanics,
2004,
39(9): 1421-1434., articleTitle=Stochastic averaging of quasi-integrable Hamiltonian systems under combined harmonic and white noise excitations, refAbstract=null)], funds=[Fund(id=1227675707615151062, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, awardId=12072234, language=CN, fundingSource=国家自然科学基金资助项目(12072234), fundOrder=null, country=null), Fund(id=1227675707703231448, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, awardId=12072233, language=CN, fundingSource=国家自然科学基金资助项目(12072233), fundOrder=null, country=null), Fund(id=1227675707761951706, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, awardId=11872044, language=CN, fundingSource=国家自然科学基金资助项目(11872044), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1227675698844861246, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, xref=1, ext=[AuthorCompanyExt(id=1227675698853249855, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, companyId=1227675698844861246, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1School of Mechanical Engineering, Tiangong University, Tianjin 300387, China), AuthorCompanyExt(id=1227675698861638464, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, companyId=1227675698844861246, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1天津工业大学机械工程学院,天津 300387)]), AuthorCompany(id=1227675698945524548, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, xref=2, ext=[AuthorCompanyExt(id=1227675698958107460, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, companyId=1227675698945524548, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4School of Mechanical Engineering, Tianjin University, Tianjin 300072, China), AuthorCompanyExt(id=1227675699176211277, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, companyId=1227675699155239755, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Structural model of the variable-section piezoelectric cantilever, figureFileSmall=3/wRujnu9om4l2jLU8cVYA==, figureFileBig=kRKO/Qj7FHF89h4BSIJTdg==, tableContent=null), ArticleFig(id=1227675703605396378, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图1, caption=
变截面压电悬臂梁结构模型, figureFileSmall=3/wRujnu9om4l2jLU8cVYA==, figureFileBig=kRKO/Qj7FHF89h4BSIJTdg==, tableContent=null), ArticleFig(id=1227675703689282460, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Fig.2, caption=
Gaussian white noise signal when D=0.002, figureFileSmall=FwjnY9hHJeQnon+rFyM1qw==, figureFileBig=bmTCPDyaV/8E1f6Rajpx7w==, tableContent=null), ArticleFig(id=1227675703764779934, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图2, caption=
D=0.002时的高斯白噪声信号, figureFileSmall=FwjnY9hHJeQnon+rFyM1qw==, figureFileBig=bmTCPDyaV/8E1f6Rajpx7w==, tableContent=null), ArticleFig(id=1227675703836083104, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Fig.3, caption=
Phase diagrams and instantaneous power diagrams of piezoelectric beam with different β when D=0.002, figureFileSmall=vzdL9Uq3CvqRUSfCleXJ3Q==, figureFileBig=1bORK7U809zKmb0D5dhq8g==, tableContent=null), ArticleFig(id=1227675703915774882, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图3, caption=
D=0.002时,不同β下的压电梁的相图和瞬时功率图, figureFileSmall=vzdL9Uq3CvqRUSfCleXJ3Q==, figureFileBig=1bORK7U809zKmb0D5dhq8g==, tableContent=null), ArticleFig(id=1227675703978689444, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Fig.4, caption=
The steady-state probability density diagrams of piezoelectric beams with variable- and constant-section, figureFileSmall=zP48/vYE8W/hyTabNkgBIg==, figureFileBig=STiywtRZ2VSIyt0gqHORyw==, tableContent=null), ArticleFig(id=1227675704108712870, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图4, caption=
变截面与等截面压电梁的稳态概率密度图, figureFileSmall=zP48/vYE8W/hyTabNkgBIg==, figureFileBig=STiywtRZ2VSIyt0gqHORyw==, tableContent=null), ArticleFig(id=1227675704175821736, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Fig.5, caption=
The joint probability density diagrams of displacement and velocity, figureFileSmall=H76xNOL8hJmxJ6Ax+Dzg2A==, figureFileBig=WgguG0XbLTNv5rlVySfmDA==, tableContent=null), ArticleFig(id=1227675704234541994, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图5, caption=
位移和速度的联合概率密度图, figureFileSmall=H76xNOL8hJmxJ6Ax+Dzg2A==, figureFileBig=WgguG0XbLTNv5rlVySfmDA==, tableContent=null), ArticleFig(id=1227675704305845164, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Fig.6, caption=
Variation of the mean square voltage with reciprocal of product of the resistance-capacitance, figureFileSmall=P2O2sNNpOVRdL6bSQiVd/A==, figureFileBig=qozIbUVF7rD1DyOFUNk2Rg==, tableContent=null), ArticleFig(id=1227675704393925550, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图6, caption=
均方电压随电阻电容乘积的倒数的变化, figureFileSmall=P2O2sNNpOVRdL6bSQiVd/A==, figureFileBig=qozIbUVF7rD1DyOFUNk2Rg==, tableContent=null), ArticleFig(id=1227675704461034416, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Fig.7, caption=
Variation of the mean square voltage with excitation intensity, figureFileSmall=tYcs3iC9IiKGSypr2oyqoA==, figureFileBig=twQul3c5/NIRiLbmQYW9eA==, tableContent=null), ArticleFig(id=1227675704549114802, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图7, caption=
均方电压随噪声强度的变化, figureFileSmall=tYcs3iC9IiKGSypr2oyqoA==, figureFileBig=twQul3c5/NIRiLbmQYW9eA==, tableContent=null), ArticleFig(id=1227675704633000884, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Fig.8, caption=
Experimental device of variable-section piezoelectric energy harvester, figureFileSmall=6ZTmvROBnRaf2KDLuanblg==, figureFileBig=zXRId4+vzKYqmqnPZgsRPw==, tableContent=null), ArticleFig(id=1227675704708498358, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图8, caption=
变截面压电能量采集器试验装置, figureFileSmall=6ZTmvROBnRaf2KDLuanblg==, figureFileBig=zXRId4+vzKYqmqnPZgsRPw==, tableContent=null), ArticleFig(id=1227675704813355960, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Fig.9, caption=
Test system of piezoelectric energy harvester, figureFileSmall=YB6BEaE5VATDk5wfIIpXYA==, figureFileBig=tCkdv06vjjlOoEUQ0RaWTQ==, tableContent=null), ArticleFig(id=1227675704947573690, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图9, caption=
压电能量采集器测试系统, figureFileSmall=YB6BEaE5VATDk5wfIIpXYA==, figureFileBig=tCkdv06vjjlOoEUQ0RaWTQ==, tableContent=null), ArticleFig(id=1227675705018876859, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Fig.10, caption=
Displacement time-history diagram, figureFileSmall=fqdua7nty2OplBqrYD3l+Q==, figureFileBig=9Tys31uRVvk+h80Ft76hlA==, tableContent=null), ArticleFig(id=1227675705081791421, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图10, caption=
位移时间历程图, figureFileSmall=fqdua7nty2OplBqrYD3l+Q==, figureFileBig=9Tys31uRVvk+h80Ft76hlA==, tableContent=null), ArticleFig(id=1227675705136317375, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Fig.11, caption=
Output voltage time-history diagram, figureFileSmall=B0kaqDZi77wdoYqkrC6EBA==, figureFileBig=PFKOPqGpNqe4mqIGsRnm7Q==, tableContent=null), ArticleFig(id=1227675705216009153, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=图11, caption=
输出电压时间历程图, figureFileSmall=B0kaqDZi77wdoYqkrC6EBA==, figureFileBig=PFKOPqGpNqe4mqIGsRnm7Q==, tableContent=null), ArticleFig(id=1227675705287312323, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Tab.1, caption=
Physical parameters of the piezoelectric energy harvester
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 变截面梁长度Lb/m | 200×10-3 |
| 变截面梁固定端宽度b0/m | 10×10-3 |
| 变截面梁厚度hb/m | 0.7×10-3 |
| 压电片长度Lp/m | 60×10-3 |
| 压电片宽度bp/m | 7×10-3 |
| 压电片厚度hp/m | 0.3×10-3 |
| 变截面梁密度ρb/(kg·m-3) | 8.3×103 |
| 压电片密度ρp/(kg·m-3) | 5.4×103 |
| 变截面梁弹性模量Eb/Pa | 128×109 |
| 压电片弹性模量Ep/Pa | 30.336×109 |
| 压电片压电常数e31/(C·m-2) | -5.2 |
| 压电片介电常数ε33/(nF·m-1) | 13.28 |
), ArticleFig(id=1227675705362809797, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=表1, caption=
压电能量采集器的物理参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 变截面梁长度Lb/m | 200×10-3 |
| 变截面梁固定端宽度b0/m | 10×10-3 |
| 变截面梁厚度hb/m | 0.7×10-3 |
| 压电片长度Lp/m | 60×10-3 |
| 压电片宽度bp/m | 7×10-3 |
| 压电片厚度hp/m | 0.3×10-3 |
| 变截面梁密度ρb/(kg·m-3) | 8.3×103 |
| 压电片密度ρp/(kg·m-3) | 5.4×103 |
| 变截面梁弹性模量Eb/Pa | 128×109 |
| 压电片弹性模量Ep/Pa | 30.336×109 |
| 压电片压电常数e31/(C·m-2) | -5.2 |
| 压电片介电常数ε33/(nF·m-1) | 13.28 |
), ArticleFig(id=1227675705488638919, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Tab. 2, caption=
Parameter values during numerical simulation
, figureFileSmall=null, figureFileBig=null, tableContent=
| β | α | χ | γ | λ | κ |
|---|
| 0.5 | 16.2924 | 0.0039 | 0.2916 | 0.9582 | 6.8428 |
| 0 | 9.6556 | 0.0059 | 0.3545 | 1.1860 | 4.3129 |
| -0.5 | 6.8090 | 0.0078 | 0.4087 | 1.3533 | 3.2058 |
), ArticleFig(id=1227675705589302217, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=表2, caption=
数值模拟时的参数值
, figureFileSmall=null, figureFileBig=null, tableContent=
| β | α | χ | γ | λ | κ |
|---|
| 0.5 | 16.2924 | 0.0039 | 0.2916 | 0.9582 | 6.8428 |
| 0 | 9.6556 | 0.0059 | 0.3545 | 1.1860 | 4.3129 |
| -0.5 | 6.8090 | 0.0078 | 0.4087 | 1.3533 | 3.2058 |
), ArticleFig(id=1227675705698354123, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Tab.3, caption=
Mean square voltage values of piezoelectric beams with variable- and constant-section
, figureFileSmall=null, figureFileBig=null, tableContent=
| β | 解析解E<u2> | 数值解E<u2> |
|---|
| 0.5 | 0.030 | 0.028 |
| 0 | 0.013 | 0.013 |
| -0.5 | 0.007 | 0.008 |
), ArticleFig(id=1227675705794823117, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=表3, caption=
变截面与等截面压电梁的均方电压值
, figureFileSmall=null, figureFileBig=null, tableContent=
| β | 解析解E<u2> | 数值解E<u2> |
|---|
| 0.5 | 0.030 | 0.028 |
| 0 | 0.013 | 0.013 |
| -0.5 | 0.007 | 0.008 |
), ArticleFig(id=1227675707137000399, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Tab.4, caption=
Mean square voltage values of piezoelectric beams with variable- and constant-section when λ=0.2
, figureFileSmall=null, figureFileBig=null, tableContent=
| β | 解析解E<u2> | 数值解E<u2> | 变化率/% |
|---|
| 0 | 0.0320 | 0.0334 | — |
| 0.5 | 0.0607 | 0.0563 | 89 |
| 0.7 | 0.0916 | 0.0821 | 186 |
| 0.9 | 0.1843 | 0.1623 | 475 |
), ArticleFig(id=1227675707233469392, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=表4, caption=
λ=0.2时,变截面与等截面压电梁的均方电压值
, figureFileSmall=null, figureFileBig=null, tableContent=
| β | 解析解E<u2> | 数值解E<u2> | 变化率/% |
|---|
| 0 | 0.0320 | 0.0334 | — |
| 0.5 | 0.0607 | 0.0563 | 89 |
| 0.7 | 0.0916 | 0.0821 | 186 |
| 0.9 | 0.1843 | 0.1623 | 475 |
), ArticleFig(id=1227675707321549778, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=EN, label=Tab.5, caption=
Mean square voltage values of piezoelectric beams with variable- and constant-section when D=0.005
, figureFileSmall=null, figureFileBig=null, tableContent=
| β | 解析解E<u2> | 数值解E<u2> | 变化率/% |
|---|
| 0 | 0.0871 | 0.0773 | — |
| 0.5 | 0.1497 | 0.1288 | 71.9 |
| 0.7 | 0.2138 | 0.1867 | 145.5 |
| 0.9 | 0.4085 | 0.3657 | 369 |
), ArticleFig(id=1227675707443184596, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227620265962701681, language=CN, label=表5, caption=
D=0.005时,变截面与等截面压电梁的均方电压值
, figureFileSmall=null, figureFileBig=null, tableContent=
| β | 解析解E<u2> | 数值解E<u2> | 变化率/% |
|---|
| 0 | 0.0871 | 0.0773 | — |
| 0.5 | 0.1497 | 0.1288 | 71.9 |
| 0.7 | 0.2138 | 0.1867 | 145.5 |
| 0.9 | 0.4085 | 0.3657 | 369 |
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