{"title":"Accelerated creep model based on the law of energy conservation and analysis of creep parameters","authors":"Wenbo Liu, Shuguang Zhang","doi":"10.1007/s11043-023-09628-6","DOIUrl":null,"url":null,"abstract":"<div><p>This study presents a model to accurately describe the nonlinear deformation pattern of rock creep damage process by incorporating energy principles. The model captures the accelerated creep deformation pattern by considering the relationship between time and creep parameters at each stage of rock creep. A nonlinear creep model based on energy conservation is developed by integrating the time-dependent creep parameters into the model. The identified parameters of the model are compared to validate its feasibility and accuracy. The correlation coefficient between the fitted curve and the test curve exceeds 0.90, confirming the validity of the nonlinear creep energy damage model. Utilizing the energy conservation law, the model effectively characterizes the damage evolution throughout the whole creep process and accurately represents the nonlinear deformation behavior during the accelerated creep stage of rocks. Compared with the Nishihara model, the model presented in this study demonstrates a better fit with the test curve, serving as a novel approach for creep modeling.</p></div>","PeriodicalId":698,"journal":{"name":"Mechanics of Time-Dependent Materials","volume":null,"pages":null},"PeriodicalIF":2.1000,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mechanics of Time-Dependent Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11043-023-09628-6","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}
引用次数: 0
Abstract
This study presents a model to accurately describe the nonlinear deformation pattern of rock creep damage process by incorporating energy principles. The model captures the accelerated creep deformation pattern by considering the relationship between time and creep parameters at each stage of rock creep. A nonlinear creep model based on energy conservation is developed by integrating the time-dependent creep parameters into the model. The identified parameters of the model are compared to validate its feasibility and accuracy. The correlation coefficient between the fitted curve and the test curve exceeds 0.90, confirming the validity of the nonlinear creep energy damage model. Utilizing the energy conservation law, the model effectively characterizes the damage evolution throughout the whole creep process and accurately represents the nonlinear deformation behavior during the accelerated creep stage of rocks. Compared with the Nishihara model, the model presented in this study demonstrates a better fit with the test curve, serving as a novel approach for creep modeling.
期刊介绍:
Mechanics of Time-Dependent Materials accepts contributions dealing with the time-dependent mechanical properties of solid polymers, metals, ceramics, concrete, wood, or their composites. It is recognized that certain materials can be in the melt state as function of temperature and/or pressure. Contributions concerned with fundamental issues relating to processing and melt-to-solid transition behaviour are welcome, as are contributions addressing time-dependent failure and fracture phenomena. Manuscripts addressing environmental issues will be considered if they relate to time-dependent mechanical properties.
The journal promotes the transfer of knowledge between various disciplines that deal with the properties of time-dependent solid materials but approach these from different angles. Among these disciplines are: Mechanical Engineering, Aerospace Engineering, Chemical Engineering, Rheology, Materials Science, Polymer Physics, Design, and others.