TITLE:
DDA Simulations of Large Flume Tests and Large Landslides Triggered by the Wenchuan Earthquake
AUTHORS:
Qingqing Yang, Zhiman Su, Fei Cai
KEYWORDS:
Discontinuous Deformation Analysis, Flume Test, Lansdslide
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.2 No.6,
May
16,
2014
ABSTRACT: This paper presents some numerical
simulations using Discontinuous Deformation Analysis (DDA). First, DDA was
applied to reproduce a series of granular flows released in a large flume. The
comparison between simulated velocity and that measured in the tests
demonstrates the effectiveness of DDA on description of kinematic behavior of
blocky assembly. Simulated results were highly sensitive to the shape and
angularity of blocky elements. Employing unrealistic block might result in
different behavior from real situation. Second, three large landslides
triggered by the Wenchuan earthquake were simulated. A well agreement with
field data was obtained if apparent friction coefficient determined by
post-analysis was adopted.