SUMMARYThis paper describes an Eulerian formulation for large deformation solid dynamics. In the present Eulerian approach, an advective equation is solved using the Stream-Upwind/Petrov-Galerkin finite element method. The Eulerian finite element method is applied to path-dependent solid analyses such as impact bar and ductile necking problems. These computational results using the Eulerian finite element method are compared with the results obtained from using the Lagrangian finite element method and an Eulerian formulation based on a finite difference method.
Behavior of fine sediment transport and sedimentation process in the estuarine channel of the Chikugogawa River were observed during the period June 2006-March 2007. The elevation of channel bed increased about lm in few days during the period very high suspended sediment concentrations were measured frequently, exceeding 40kg/m3. The suspended cohesive sediment accumulated at the region where the current becomes slow and settled on the bed. The viscosity of surface fluid mud was greater than that of disturbed sample. This result suggests that the settled particles consolidates at early stage of deposition, and relatively large particles don't resuspend by tidal current, then they becomes sedimentation layer.
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