Abstract
Shear banding, the localization of deformation into thin zones of intense shearing, is a phenomenon commonly observed in soils, yet it is still poorly understood. Stereophotogrammetry was used to study the deformation in a shear band as observed in plane strain compression tests of loose, moist-tamped specimens of saturated sand. A new analysis of shear band behavior is presented to evaluate the behavior inside a shear band. The analysis consists of determining displacement functions by applying a least-squares linear regression to discrete sets of grain displacements with the shear band. Deformation gradients are then determined from a finite strain formulation. Estimates of accuracy of the method follow directly from the statistically based regression analysis. The mechanism of shear band deformation was found to be one of simple shear; that is, the band is inextensible along its length. During globally undrained plane strain compression of loose sands, the shear band deformed at constant volume, within the accuracy of the method, despite achieving magnitudes of shear strain of 50%–70%.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
