The shape of sedimentary particles is an important property, from which geographical hypotheses related to abrasion, distance of transport, river behavior, etc. can be formulated. In this paper, we use digital image analysis, especially discrete geometry, to automatically compute some shape parameters such as roundness, i.e. a measure of howmuch the corners and edges of a particle have been wor...

Article history: Received 29 October 2015 Received in revised form 18 December 2015 Accepted 19 December 2015 Available online 29 December 2015 Particle shape plays an important role in determining the engineering behaviour of granular materials. In this regard, characterisation and quantification of particle shape are essential for understanding the behaviour of granular materials. X-ray micro...

Abstract Roundness/angularity is a vital shape descriptor that significantly impacts the mechanical response of granular materials and closely associated with many geotechnical problems, such as liquefaction, slope stability, bearing capacity. In this study, series biaxial shearing tests are conducted on dual-size aluminum circular hexagonal rod material. A novel image analysis technique used t...

This paper addresses the mechanical behavior of buried steel pipeline crossing subsidence strata. The investigation is based on numerical simulation of the nonlinear response of the pipeline-soil system through finite element method, considering large strain and displacement, inelastic material behavior of buried pipeline and the surrounding soil, as well as contact and friction on the pipeline...