{"title":"由菱形连杆机构驱动的再定心自平衡入射器的抗震性能分析与优化","authors":"","doi":"10.1016/j.soildyn.2024.108898","DOIUrl":null,"url":null,"abstract":"<div><p>This paper proposes a re-centring and self-balanced inerter (RSBI). The rhombic linkage achieves self-balanced of the torque on the screw, which releases the constraints demanded at the end of the screw and reduces the working wastage and cost of the screw. The flywheel's re-centring feature is guaranteed by introducing a self-resetting spring and enhances the stability of the system. More specifically, firstly, the resonance analysis method provides the optimized mounting angle of the RSBI's rhombic linkage. Then, the user-friendly optimal design strategy of the four-parameter inerter system, are derived by applying the fixed-point theory, and the validity of the optimized parameters is verified by parameter and time history analysis. Finally, nonlinear model of the RSBI is performed to account for the nonlinearity due to the variation of the rhombic linkage angle at large working strokes. The nonlinear amplitude frequency response function of the system is obtained using the harmonic balance method and the working stroke of the inerter is classified by comparing it with the linear frequency response function. The device proposed in this paper provides a good control effect on the displacement and acceleration control of the main structure under multiple seismic waves. The nonlinearity of the device is appropriately exploited to almost double the working stroke of the inerter, which can effectively reduce the size of the device.</p></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Seismic performance analysis and optimization of a re-centring and self-balanced inerter driven by a rhombic linkage\",\"authors\":\"\",\"doi\":\"10.1016/j.soildyn.2024.108898\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This paper proposes a re-centring and self-balanced inerter (RSBI). The rhombic linkage achieves self-balanced of the torque on the screw, which releases the constraints demanded at the end of the screw and reduces the working wastage and cost of the screw. The flywheel's re-centring feature is guaranteed by introducing a self-resetting spring and enhances the stability of the system. More specifically, firstly, the resonance analysis method provides the optimized mounting angle of the RSBI's rhombic linkage. Then, the user-friendly optimal design strategy of the four-parameter inerter system, are derived by applying the fixed-point theory, and the validity of the optimized parameters is verified by parameter and time history analysis. Finally, nonlinear model of the RSBI is performed to account for the nonlinearity due to the variation of the rhombic linkage angle at large working strokes. The nonlinear amplitude frequency response function of the system is obtained using the harmonic balance method and the working stroke of the inerter is classified by comparing it with the linear frequency response function. The device proposed in this paper provides a good control effect on the displacement and acceleration control of the main structure under multiple seismic waves. The nonlinearity of the device is appropriately exploited to almost double the working stroke of the inerter, which can effectively reduce the size of the device.</p></div>\",\"PeriodicalId\":49502,\"journal\":{\"name\":\"Soil Dynamics and Earthquake Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Soil Dynamics and Earthquake Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0267726124004500\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, GEOLOGICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Soil Dynamics and Earthquake Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0267726124004500","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
Seismic performance analysis and optimization of a re-centring and self-balanced inerter driven by a rhombic linkage
This paper proposes a re-centring and self-balanced inerter (RSBI). The rhombic linkage achieves self-balanced of the torque on the screw, which releases the constraints demanded at the end of the screw and reduces the working wastage and cost of the screw. The flywheel's re-centring feature is guaranteed by introducing a self-resetting spring and enhances the stability of the system. More specifically, firstly, the resonance analysis method provides the optimized mounting angle of the RSBI's rhombic linkage. Then, the user-friendly optimal design strategy of the four-parameter inerter system, are derived by applying the fixed-point theory, and the validity of the optimized parameters is verified by parameter and time history analysis. Finally, nonlinear model of the RSBI is performed to account for the nonlinearity due to the variation of the rhombic linkage angle at large working strokes. The nonlinear amplitude frequency response function of the system is obtained using the harmonic balance method and the working stroke of the inerter is classified by comparing it with the linear frequency response function. The device proposed in this paper provides a good control effect on the displacement and acceleration control of the main structure under multiple seismic waves. The nonlinearity of the device is appropriately exploited to almost double the working stroke of the inerter, which can effectively reduce the size of the device.
期刊介绍:
The journal aims to encourage and enhance the role of mechanics and other disciplines as they relate to earthquake engineering by providing opportunities for the publication of the work of applied mathematicians, engineers and other applied scientists involved in solving problems closely related to the field of earthquake engineering and geotechnical earthquake engineering.
Emphasis is placed on new concepts and techniques, but case histories will also be published if they enhance the presentation and understanding of new technical concepts.