From computed tomography to mechanics of granular materials via level set bridge

详细信息    查看全文

• 作者：Ivan Vlahinić ; Reid Kawamoto ; Edward Andò ; Gioacchino Viggiani…
• 关键词：Fabric ; Granular ; Level sets ; Multi scale ; Tomography
• 刊名：Acta Geotechnica
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：12
• 期：1
• 页码：85-95
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Geoengineering, Foundations, Hydraulics; Continuum Mechanics and Mechanics of Materials; Geotechnical Engineering & Applied Earth Sciences; Soil Science & Conservation; Soft and Granular Matter, Compl
• 出版者：Springer Berlin Heidelberg
• ISSN：1861-1133
• 卷排序：12

文摘

This paper details the ‘level set bridge’: a single platform for the characterization of various aspects of granular micro-mechanics, including grain morphology, grain kinematics, and inter-granular contact. This platform is studied and verified for accuracy using synthetic examples, in particular, its robustness with respect to the variables of image resolution and noise. The level set bridge is then applied to analysis of XRCT images of real 3D triaxial experiments of two types of granular materials. Contact statistics and kinematics are reported inside and outside of the failure band of one, and kinematics inside a failure band are reported in the other, from preload to critical state.