A method for microscopic unsaturated soil-water interaction analysis based on DDA

Longxiao Guo, Tonglu Li, Guangqi Chen, Pengcheng Yu, Xinyan Peng, Deguang Yang

Research output: Contribution to journalArticle

Abstract

Unsaturated soil is a three-phase discontinues system, and microscopic analysis can provide an intrinsic understanding for macroscopic mechanical behavior of the soil. Discontinuous Deformation Analysis (DDA) has the advantage for analyzing the material like granular aggregates. Based on capillary mechanics, a newly developed algorithm is applied in conventional DDA code, which treats a DDA element as an ideal soil particle and exerts capillary force among elements. Then, to validate the extended method, an ideal microscopic soil model is established, and the simulation results are in good agreement with typical analytical solutions. It indicates that the developed DDA is reliable and applicable to explore unsaturated soil behaviors microscopically.

LanguageEnglish
Pages143-151
Number of pages9
JournalComputers and Geotechnics
Volume108
DOIs
Publication statusPublished - Apr 1 2019

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soil water
Soils
Water
soil
mechanics
Mechanics
analysis
method
simulation

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications

Cite this

A method for microscopic unsaturated soil-water interaction analysis based on DDA. / Guo, Longxiao; Li, Tonglu; Chen, Guangqi; Yu, Pengcheng; Peng, Xinyan; Yang, Deguang.

In: Computers and Geotechnics, Vol. 108, 01.04.2019, p. 143-151.

Research output: Contribution to journalArticle

Guo, Longxiao ; Li, Tonglu ; Chen, Guangqi ; Yu, Pengcheng ; Peng, Xinyan ; Yang, Deguang. / A method for microscopic unsaturated soil-water interaction analysis based on DDA. In: Computers and Geotechnics. 2019 ; Vol. 108. pp. 143-151.
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