Article(id=1241831202802439149, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1241831200843699167, articleNumber=null, orderNo=null, doi=10.19636/j.cnki.cjsm42-1250/o3.2025.022, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1753459200000, receivedDateStr=2025-07-26, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774005230856, onlineDateStr=2026-03-20, pubDate=1761494400000, pubDateStr=2025-10-27, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774005230856, onlineIssueDateStr=2026-03-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774005230856, creator=13701087609, updateTime=1774005230856, updator=13701087609, issue=Issue{id=1241831200843699167, tenantId=1146029695717560320, journalId=1241755870837649424, year='2025', volume='46', issue='5', pageStart='571', pageEnd='706', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1774005230388, creator=13701087609, updateTime=1774005316875, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241831563734881184, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1241831200843699167, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241831563739075489, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1241831200843699167, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=610, endPage=625, ext={EN=ArticleExt(id=1241831203049903086, articleId=1241831202802439149, tenantId=1146029695717560320, journalId=1241755870837649424, language=EN, title=Parameter Optimization and Experimental Study of a Damped Dynamic Vibration Absorber with Negative Stiffness, columnId=1241831201674171363, journalTitle=Chinese Journal of Solid Mechanics, columnName=Research Papers, runingTitle=null, highlight=null, articleAbstract=
In the field of engineering vibration control, the parameter design of traditional dynamic vibration absorbers typically neglects the damping inherent in the primary system. However, structural damping is unavoidable in practical applications, and disregarding this factor introduces significant errors and diminishes vibration suppression effectiveness. To resolve this limitation and enhance engineering applicability, this study aims to solve the optimization design problem of a negative-stiffness dynamic vibration absorber incorporating an amplification mechanism under the condition of primary system damping. The research first establishes the precise governing differential equations of the system and derives its analytical solution. Given that the presence of primary system damping invalidates the classical fixed-point theory, a numerical optimization approach is employed: the primary system amplitude is normalized and based on the criterion of minimizing the maximum primary system amplitude, optimal parameters including the stiffness ratio and damping ratio are determined through numerical search techniques. The accuracy of the analytical solution is subsequently verified using numerical simulations. The results demonstrate that, compared to traditional dynamic vibration absorber designs ignoring primary system damping, the proposed method significantly improves the overall vibration reduction efficiency of the negative-stiffness dynamic vibration absorber with amplification mechanism and effectively reduces the sensitivity of the primary system's resonant amplitude to variations in excitation frequency. Comparative vibration suppression experiments between the grounded negative-stiffness dynamic vibration absorber with amplification mechanism and conventional dynamic vibration absorbers further validate that the proposed negative-stiffness device exhibits significantly superior performance in both effective bandwidth and vibration reduction depth. This study provides a solid theoretical foundation and a practical optimization methodology for negative-stiffness dynamic vibration absorbers incorporating amplification mechanisms. Its optimization strategy, which explicitly considers primary damping, markedly enhances the practical effectiveness and adaptability of the absorber. Consequently, the proposed negative-stiffness dynamic vibration absorber demonstrates broad application prospects in engineering fields requiring efficient broadband vibration suppression, such as precision instruments, offering a novel solution for high-performance vibration control.
, correspAuthors=Yanying Zhao, 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, authorCompany=null, fund=null, authors=null, authorsList=Hao Wu, Yanying Zhao, Qingrui Wang, Tao Sun, Dashuai Zhang), CN=ArticleExt(id=1241831216341651767, articleId=1241831202802439149, tenantId=1146029695717560320, journalId=1241755870837649424, language=CN, title=主系统有阻尼的负刚度动力吸振器的参数优化与实验研究, columnId=1241831201896469478, journalTitle=固体力学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
传统的动力吸振器参数设计通常忽略主系统阻尼,但在实际结构中,阻尼是不可避免的,忽视这一因素可能导致结果的显著误差. 本研究针对含放大机构的负刚度动力吸振器,首先建立了系统的运动微分方程并求得其解析解. 由于主系统存在阻尼,固定点理论失效,只能通过数值方法求解出系统的最优参数. 随后,对主系统振幅的表达式进行无量纲化,采用最小化-最大振幅的优化方法得到了系统的最优参数,并通过数值仿真验证了解析解的准确性. 研究表明,与传统的动力吸振器相比,考虑主系统阻尼可有效提高系统减振效率,并减少主系统振幅对激振频率的依赖性. 最后,设计了含放大机构的动力吸振器减振实验,通过采用不同类型动力吸振器和不同阻尼值的对比验证了接地负刚度装置良好的减振性能.
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33(05): 57-62. (in Chinese), articleTitle=Stability analysis of supersonic plate with negative stiffness mechanism, refAbstract=null)], funds=[Fund(id=1241831227875988118, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, awardId=12072140, language=CN, fundingSource=国家自然科学基金资助项目(12072140), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1241831216580727103, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, xref=null, ext=[AuthorCompanyExt(id=1241831216589115712, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, companyId=1241831216580727103, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Aeronautics and Astronautics, Nanchang Hangkong University, Nanchang, 330063), AuthorCompanyExt(id=1241831216597504321, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, companyId=1241831216580727103, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=南昌航空大学航空宇航学院,南昌,330063)])], figs=[ArticleFig(id=1241831220435292587, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.1, caption=
Negative stiffness vibration absorber model, figureFileSmall=H7h3eKbxhq9t5wOLELcHHQ==, figureFileBig=TzeKbzzEs3KrmjhurXX4ug==, tableContent=null), ArticleFig(id=1241831220573704626, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图1, caption=
负刚度吸振器模型, figureFileSmall=H7h3eKbxhq9t5wOLELcHHQ==, figureFileBig=TzeKbzzEs3KrmjhurXX4ug==, tableContent=null), ArticleFig(id=1241831220791808447, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.2, caption=
The amplitude-frequency curves for different damping ratios (ξ1=0), figureFileSmall=htM7Q2NV9dekg5Hr5rHNkA==, figureFileBig=36ivK3bqdIeTJHbZhe3UnA==, tableContent=null), ArticleFig(id=1241831220854723013, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图2, caption=
不同阻尼比下的振幅响应曲线(ξ1=0), figureFileSmall=htM7Q2NV9dekg5Hr5rHNkA==, figureFileBig=36ivK3bqdIeTJHbZhe3UnA==, tableContent=null), ArticleFig(id=1241831220951192012, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.3, caption=
The amplitude-frequency curves for different damping ratios (ξ1≠0), figureFileSmall=/j5Isus2Du+MpPCYtz5Udw==, figureFileBig=fY7vEMWETuFRAFI31+4zIQ==, tableContent=null), ArticleFig(id=1241831221060243922, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图3, caption=
不同阻尼比下的振幅响应曲线(ξ1≠0), figureFileSmall=/j5Isus2Du+MpPCYtz5Udw==, figureFileBig=fY7vEMWETuFRAFI31+4zIQ==, tableContent=null), ArticleFig(id=1241831221152518616, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.4, caption=
Flowchart of genetic algorithm, figureFileSmall=/UmG9jqIFBUZz4rNZirpOQ==, figureFileBig=SdUxCi3GhhlcqoRi7yjsLA==, tableContent=null), ArticleFig(id=1241831221223821788, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图4, caption=
遗传算法流程图, figureFileSmall=/UmG9jqIFBUZz4rNZirpOQ==, figureFileBig=SdUxCi3GhhlcqoRi7yjsLA==, tableContent=null), ArticleFig(id=1241831221345456610, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.5, caption=
Surface plots of β1-max under different α and ξ2, figureFileSmall=ouRjzzsaZpbz1NY13NzSNw==, figureFileBig=GpOnj4VqUY4YhBjsTTacpQ==, tableContent=null), ArticleFig(id=1241831221416759782, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图5, caption=
不同α和ξ2下β1-max的曲面图, figureFileSmall=ouRjzzsaZpbz1NY13NzSNw==, figureFileBig=GpOnj4VqUY4YhBjsTTacpQ==, tableContent=null), ArticleFig(id=1241831221504840171, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.6, caption=
Optimal curves for prescribed ξ1 and μ, figureFileSmall=yfp8tLR89+VvSwcq5pw3WQ==, figureFileBig=Ni42BsqVd3xgKhVZ/N/wtg==, tableContent=null), ArticleFig(id=1241831221639057902, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图6, caption=
固定ξ1和μ下的最优曲线, figureFileSmall=yfp8tLR89+VvSwcq5pw3WQ==, figureFileBig=Ni42BsqVd3xgKhVZ/N/wtg==, tableContent=null), ArticleFig(id=1241831221714555377, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.7, caption=
The amplitude-frequency curves for different negative stiffness ratios n, figureFileSmall=8eKLteyNJ5tyHFOfhcDuWQ==, figureFileBig=A47G+UDBBRZ+SfoW8ffxPA==, tableContent=null), ArticleFig(id=1241831223165784566, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图7, caption=
不同负刚度比n下的幅频响应曲线, figureFileSmall=8eKLteyNJ5tyHFOfhcDuWQ==, figureFileBig=A47G+UDBBRZ+SfoW8ffxPA==, tableContent=null), ArticleFig(id=1241831223258059259, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.8, caption=
The amplitude-frequency curves for different magnification ratio L, figureFileSmall=rHTCmb7xUF0eqSqiymshTg==, figureFileBig=D37mTIFooN8aMoyJCeoHxw==, tableContent=null), ArticleFig(id=1241831223337751039, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图8, caption=
不同放大比L下的幅频响应曲线, figureFileSmall=rHTCmb7xUF0eqSqiymshTg==, figureFileBig=D37mTIFooN8aMoyJCeoHxw==, tableContent=null), ArticleFig(id=1241831223455191559, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.9, caption=
Comparison of frequency domain response curves under numerical optimization, figureFileSmall=QelO7kxA0WbNyeVU+y8FlQ==, figureFileBig=FYPzVlewa5rNJFWwQlfDtA==, tableContent=null), ArticleFig(id=1241831223539077641, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图9, caption=
数值优化下的频域响应曲线对比, figureFileSmall=QelO7kxA0WbNyeVU+y8FlQ==, figureFileBig=FYPzVlewa5rNJFWwQlfDtA==, tableContent=null), ArticleFig(id=1241831223618769420, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.10, caption=
Comparison of numerical and analytical solution under optimal parameters, figureFileSmall=MPW/glbMBoO/MMDvr3RzQg==, figureFileBig=utPRblzav65pz8dc991O6g==, tableContent=null), ArticleFig(id=1241831223719432720, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图10, caption=
最优参数下数值解与解析解的对比, figureFileSmall=MPW/glbMBoO/MMDvr3RzQg==, figureFileBig=utPRblzav65pz8dc991O6g==, tableContent=null), ArticleFig(id=1241831223828484631, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.11, caption=
Schematic diagram of negative stiffness device, figureFileSmall=oa0t5RSoZ9fg+5Yuj3wPMQ==, figureFileBig=1Mnn4TvrPbOqyYDgQ5p3HA==, tableContent=null), ArticleFig(id=1241831223916565021, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图11, caption=
负刚度装置示意图, figureFileSmall=oa0t5RSoZ9fg+5Yuj3wPMQ==, figureFileBig=1Mnn4TvrPbOqyYDgQ5p3HA==, tableContent=null), ArticleFig(id=1241831224046588449, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.12, caption=
Negative stiffness-dimensionless displacement curve, figureFileSmall=zIZZYOHlIFPMTj88XXEeJg==, figureFileBig=IpEShY6SbB9W3TTP3rJb1Q==, tableContent=null), ArticleFig(id=1241831224126280230, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图12, caption=
负刚度-无量纲位移曲线, figureFileSmall=zIZZYOHlIFPMTj88XXEeJg==, figureFileBig=IpEShY6SbB9W3TTP3rJb1Q==, tableContent=null), ArticleFig(id=1241831224218554923, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.13, caption=
Knob adjustable damper, figureFileSmall=dsjTAREy6WzeArxGxw3eNg==, figureFileBig=MphQi6DOLXQLEjCefFVRSw==, tableContent=null), ArticleFig(id=1241831224302441007, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图13, caption=
旋钮调节式阻尼器, figureFileSmall=dsjTAREy6WzeArxGxw3eNg==, figureFileBig=MphQi6DOLXQLEjCefFVRSw==, tableContent=null), ArticleFig(id=1241831224394715699, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.14, caption=
Experimental model and experimental equipment, figureFileSmall=CvTNNsoSgiXERd/X4/uUWA==, figureFileBig=4Z8/HAgQyzqOtSrDeATIjQ==, tableContent=null), ArticleFig(id=1241831224457630263, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图14, caption=
实验模型和实验设备, figureFileSmall=CvTNNsoSgiXERd/X4/uUWA==, figureFileBig=4Z8/HAgQyzqOtSrDeATIjQ==, tableContent=null), ArticleFig(id=1241831224549904956, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.15, caption=
Frequency spectrum at the first mode of the main system, figureFileSmall=ZlFQU2sSvV58l9tUV/zEbA==, figureFileBig=XDvJ5Xw2PtBXiyxDG7LL4A==, tableContent=null), ArticleFig(id=1241831224637985344, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图15, caption=
主系统一阶模态处频谱图, figureFileSmall=ZlFQU2sSvV58l9tUV/zEbA==, figureFileBig=XDvJ5Xw2PtBXiyxDG7LL4A==, tableContent=null), ArticleFig(id=1241831224738648645, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.16, caption=
Comparison of sweep time domain response of vibration absorber to main system, figureFileSmall=rQZuBfgm5LHb6+iQsBPesA==, figureFileBig=Qzj68Tw59PZs4rtqK/CWgw==, tableContent=null), ArticleFig(id=1241831224839311945, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图16, caption=
吸振器对主系统扫频时域响应的影响对比, figureFileSmall=rQZuBfgm5LHb6+iQsBPesA==, figureFileBig=Qzj68Tw59PZs4rtqK/CWgw==, tableContent=null), ArticleFig(id=1241831224914809421, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.17, caption=
Comparison of time-domain response of the main system with a fixed frequency by the vibration absorber, figureFileSmall=R17BzpC48Iy3y1KuRvLGLA==, figureFileBig=ZYI5KSNIKvam00RY1+YV0w==, tableContent=null), ArticleFig(id=1241831225007084114, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图17, caption=
吸振器对主系统定频时域响应对比, figureFileSmall=R17BzpC48Iy3y1KuRvLGLA==, figureFileBig=ZYI5KSNIKvam00RY1+YV0w==, tableContent=null), ArticleFig(id=1241831225095164501, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.18, caption=
Comparison of time-domain response of the main system with a fixed frequency under different damping ratios, figureFileSmall=KOfrtoG0Ik1l1od7BJbF3A==, figureFileBig=K0YLWmtbhwv6HbYGveC6ng==, tableContent=null), ArticleFig(id=1241831225200022108, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图18, caption=
不同阻尼比下主系统定频时域响应对比, figureFileSmall=KOfrtoG0Ik1l1od7BJbF3A==, figureFileBig=K0YLWmtbhwv6HbYGveC6ng==, tableContent=null), ArticleFig(id=1241831225292296802, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.19, caption=
Time domain comparison of theoretical and experimental values, figureFileSmall=YIIJUwz0TpZUCDNgsGLf6Q==, figureFileBig=Zn0EGPFte1BygO4XxDTORw==, tableContent=null), ArticleFig(id=1241831225392960105, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图19, caption=
负刚度装置理论值与实验值的时域对比, figureFileSmall=YIIJUwz0TpZUCDNgsGLf6Q==, figureFileBig=Zn0EGPFte1BygO4XxDTORw==, tableContent=null), ArticleFig(id=1241831225472651885, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Fig.20, caption=
Comparison of amplitude-frequency response curves of different vibration-absorber models, figureFileSmall=2beGTQrFPAW+MlzKLg8D6A==, figureFileBig=t2B3sTYdZ+uLMnXd3d1SoA==, tableContent=null), ArticleFig(id=1241831225564926578, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=图20, caption=
不同吸振器模型的幅频响应曲线对比, figureFileSmall=2beGTQrFPAW+MlzKLg8D6A==, figureFileBig=t2B3sTYdZ+uLMnXd3d1SoA==, tableContent=null), ArticleFig(id=1241831225665589878, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Table 1, caption=
Values of experimental parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 符号 | 数值 |
|---|
| 主系统质量块(g) | m1 | 100 g |
| 吸振器质量块(g) | m2 | 10 g |
| 主系统弹簧刚度(N/m) | k1 | 120 N/m |
| 吸振器弹簧刚度(N/m) | k2 | 40 N/m |
| 接地弹簧刚度(N/m) | k3 | 20 N/m |
| 水平弹簧刚度(N/m) | ka | 23 N/m |
| 竖直弹簧刚度(N/m) | kb | 20 N/m |
| 主系统到支点距离(cm) | r1 | 17 cm |
| 吸振器到支点距离(cm) | r2 | 43 cm |
| 水平弹簧原长(cm) | L0 | 10 cm |
| 水平弹簧压缩量(cm) | h | 5 cm |
| 连杆长度(cm) | a | 3 cm |
| 竖直弹簧位移(cm) | x | 2 cm |
), ArticleFig(id=1241831225745281658, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=CN, label=表1, caption=
实验参数值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 符号 | 数值 |
|---|
| 主系统质量块(g) | m1 | 100 g |
| 吸振器质量块(g) | m2 | 10 g |
| 主系统弹簧刚度(N/m) | k1 | 120 N/m |
| 吸振器弹簧刚度(N/m) | k2 | 40 N/m |
| 接地弹簧刚度(N/m) | k3 | 20 N/m |
| 水平弹簧刚度(N/m) | ka | 23 N/m |
| 竖直弹簧刚度(N/m) | kb | 20 N/m |
| 主系统到支点距离(cm) | r1 | 17 cm |
| 吸振器到支点距离(cm) | r2 | 43 cm |
| 水平弹簧原长(cm) | L0 | 10 cm |
| 水平弹簧压缩量(cm) | h | 5 cm |
| 连杆长度(cm) | a | 3 cm |
| 竖直弹簧位移(cm) | x | 2 cm |
), ArticleFig(id=1241831225854333567, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Table 2, caption=
Comparison of the reduction amplitudes of theoretical and experimental amplitudes under different damping ratios
, figureFileSmall=null, figureFileBig=null, tableContent=
| 阻尼比ξ1 | 理论值β1 | 实验值β2 | 绝对误差 | 降幅ρ1 | 降幅ρ2 |
|---|
| ξ1-1 | 0.15 | 1.42 | 1.43 | 0.7% | / | / |
| ξ1-2 | 0.25 | 1.27 | 1.30 | 2.4% | 10.56% | 9.09% |
| ξ1-3 | 0.35 | 1.15 | 1.19 | 3.5% | 19.01% | 16.78% |
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不同阻尼比下理论幅值和实验振幅的降幅对比
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| 阻尼比ξ1 | 理论值β1 | 实验值β2 | 绝对误差 | 降幅ρ1 | 降幅ρ2 |
|---|
| ξ1-1 | 0.15 | 1.42 | 1.43 | 0.7% | / | / |
| ξ1-2 | 0.25 | 1.27 | 1.30 | 2.4% | 10.56% | 9.09% |
| ξ1-3 | 0.35 | 1.15 | 1.19 | 3.5% | 19.01% | 16.78% |
), ArticleFig(id=1241831226034688643, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241831202802439149, language=EN, label=Table 3, caption=
Comparison of errors between theoretical values and experimental values
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| 时间t(s) | 实验值x(mm) | 理论值x(mm) | 绝对误差σ | 相对误差σ1 |
|---|
| 0 | 1.42 | 1.27 | 0.15 | 11.81% |
| 5 | 1.38 | 1.24 | 0.14 | 11.29% |
| 10 | 1.36 | 1.26 | 0.10 | 7.94% |
| 15 | 1.41 | 1.26 | 0.15 | 11.90% |
| 20 | 1.39 | 1.23 | 0.16 | 13.09% |
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理论值与实验值的误差对比
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| 时间t(s) | 实验值x(mm) | 理论值x(mm) | 绝对误差σ | 相对误差σ1 |
|---|
| 0 | 1.42 | 1.27 | 0.15 | 11.81% |
| 5 | 1.38 | 1.24 | 0.14 | 11.29% |
| 10 | 1.36 | 1.26 | 0.10 | 7.94% |
| 15 | 1.41 | 1.26 | 0.15 | 11.90% |
| 20 | 1.39 | 1.23 | 0.16 | 13.09% |
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Optimal structural parameters of different dynamic vibration absorbers
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| 参数 | PF | PX | PP |
|---|
| μ | 0.1 | 0.1 | 0.1 |
| ξ1 | 0.100 | 0 | 0.1500 |
| ξ2 | 0.1970 | 0.5415 | 0.5300 |
| α | 0.8620 | 0.6931 | 0.5800 |
| L | 0 | 2.5 | 2.5 |
| n | 0 | -0.5592 | -0.5000 |
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不同动力吸振器的最优结构参数
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| 参数 | PF | PX | PP |
|---|
| μ | 0.1 | 0.1 | 0.1 |
| ξ1 | 0.100 | 0 | 0.1500 |
| ξ2 | 0.1970 | 0.5415 | 0.5300 |
| α | 0.8620 | 0.6931 | 0.5800 |
| L | 0 | 2.5 | 2.5 |
| n | 0 | -0.5592 | -0.5000 |
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