{"title":"A novel friction model for steel-polymer interfaces in sliding seismic isolation bearings","authors":"Armando Messina, Eduardo Miranda","doi":"10.1002/eqe.4128","DOIUrl":null,"url":null,"abstract":"<p>Experiments have shown that the coefficient of friction in steel-polymer interfaces is influenced by several interacting parameters, making it difficult to accurately model the instantaneously varying coefficient of friction in sliding seismic isolation bearings. A new model to characterize the variation of the coefficient of friction in sliding seismic isolation bearings in which a thermoplastic slides relative to a steel surface is presented. The model takes into account the variation in the coefficient of friction produced by changes in sliding velocity, normal pressure, and stick-slip phenomena, as well as degradation due to frictional heating. In particular, the model takes into account the differences in behavior during reversing and nonreversing stick-slip transitions. It is shown that the proposed model is able to reproduce very well experimental results of friction tests using various steel-polymer interfaces.</p>","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"53 8","pages":"2592-2606"},"PeriodicalIF":4.3000,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Earthquake Engineering & Structural Dynamics","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/eqe.4128","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0
Abstract
Experiments have shown that the coefficient of friction in steel-polymer interfaces is influenced by several interacting parameters, making it difficult to accurately model the instantaneously varying coefficient of friction in sliding seismic isolation bearings. A new model to characterize the variation of the coefficient of friction in sliding seismic isolation bearings in which a thermoplastic slides relative to a steel surface is presented. The model takes into account the variation in the coefficient of friction produced by changes in sliding velocity, normal pressure, and stick-slip phenomena, as well as degradation due to frictional heating. In particular, the model takes into account the differences in behavior during reversing and nonreversing stick-slip transitions. It is shown that the proposed model is able to reproduce very well experimental results of friction tests using various steel-polymer interfaces.
期刊介绍：
Earthquake Engineering and Structural Dynamics provides a forum for the publication of papers on several aspects of engineering related to earthquakes. The problems in this field, and their solutions, are international in character and require knowledge of several traditional disciplines; the Journal will reflect this. Papers that may be relevant but do not emphasize earthquake engineering and related structural dynamics are not suitable for the Journal. Relevant topics include the following:
ground motions for analysis and design
geotechnical earthquake engineering
probabilistic and deterministic methods of dynamic analysis
experimental behaviour of structures
seismic protective systems
system identification
risk assessment
seismic code requirements
methods for earthquake-resistant design and retrofit of structures.
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