教師資料查詢 | 類別: 期刊論文 | 教師: 楊長義 Yang Zon-yee (瀏覽個人網頁)

標題:A discrete element model for predicting shear strength and degradation of rock joint by using compressive and tensile test data
學年101
學期1
出版(發表)日期2012/09/01
作品名稱A discrete element model for predicting shear strength and degradation of rock joint by using compressive and tensile test data
作品名稱(其他語言)
著者T. Kazerani; Yang, Z. Y.; Zhao, J.
單位淡江大學土木工程學系
出版者Vienna: Springer Vienna
著錄名稱、卷期、頁數Rock Mechanics and Rock Engineering 45(5), pp.695-709
摘要A discrete element model is proposed to examine rock strength and failure. The model is implemented by UDEC, which is developed for this purpose. The material is represented as a collection of irregular-sized deformable particles interacting at their cohesive boundaries. The interface between two adjacent particles is viewed as a flexible contact whose constitutive law controls the material fracture and fragmentation properties. To reproduce rock anisotropy, an orthotropic cohesive law is developed for the contacts, which allows their shear and tensile behaviors to be different from each other. Using a combination of original closed-form expressions and statistical calibrations, a unique set of the contact microparameters are found based on the uniaxial/triaxial compression and Brazilian tension test data of a plaster. Applying the obtained microparameters, joint specimens, made of the same plaster, are simulated, where the comparison of the obtained results to laboratory data shows a reasonable agreement.
關鍵字Discrete element method;Orthotropic cohesive contact model;Microparameter;Rock joint;Degradation
語言英文
ISSN1434-453X
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別奧地利
公開徵稿
出版型式,電子版,紙本
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