Simulation of the Cutting Process in Softening and Hardening Soils

Zhefei Jin, James P. Hambleton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Simulation of plowing and cutting processes in soils is challenging and time-consuming due to large deformations and contact interactions. Recent studies on sand have suggested that a simplified, efficient approach based on incremental plastic analysis can capture the essential physics and features of the problem. The present study refines this technique by enhancing the kinematics and implementing a more sophisticated material law. The effects of hardening and softening, as well as dilatancy and compaction, are introduced. With the modified model, it is observed in the case of hardening (compaction) that the occurrence of multiple successive shear bands at variable locations gives the appearance of continuous shearing in the final pattern of deformation. This is markedly different from the previously predicted response in the case of softening (dilatancy), where shear bands appear at distinct locations and transition from one discrete location to the next. The computed results are compared with preliminary experimental data gathered in the Soil-Structure and Soil-Machine Interaction Laboratory (SSI-SMI Laboratory) at Northwestern University.

Original languageEnglish (US)
Title of host publicationGeotechnical Special Publication
EditorsJoseph T. Coe, Sanjeev Kumar, Christopher L. Meehan, Miguel A. Pando
PublisherAmerican Society of Civil Engineers (ASCE)
Pages11-19
Number of pages9
EditionGSP 310
ISBN (Electronic)9780784482070, 9780784482087, 9780784482094, 9780784482100, 9780784482117, 9780784482124, 9780784482131, 9780784482148, 9780784482155, 9780784482162
DOIs
StatePublished - Jan 1 2019
Event8th International Conference on Case Histories in Geotechnical Engineering: Geotechnical Materials, Modeling, and Testing, Geo-Congress 2019 - Philadelphia, United States
Duration: Mar 24 2019Mar 27 2019

Publication series

NameGeotechnical Special Publication
NumberGSP 310
Volume2019-March
ISSN (Print)0895-0563

Conference

Conference8th International Conference on Case Histories in Geotechnical Engineering: Geotechnical Materials, Modeling, and Testing, Geo-Congress 2019
CountryUnited States
CityPhiladelphia
Period3/24/193/27/19

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Jin, Z., & Hambleton, J. P. (2019). Simulation of the Cutting Process in Softening and Hardening Soils. In J. T. Coe, S. Kumar, C. L. Meehan, & M. A. Pando (Eds.), Geotechnical Special Publication (GSP 310 ed., pp. 11-19). (Geotechnical Special Publication; Vol. 2019-March, No. GSP 310). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784482124.002