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Model predictions exhibit both quantitative and qualitative consistency with the observed behavior of cohesive material.
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The capabilities of the contact model to capture the mechanical macroscopic behavior of cohesive materials were investigated by means of cone penetration and unconfined compression simulations.
The derived relationship is utilized to study the stress strain and failure behavior including the volume change and "brittle" to "ductile" transition behavior of cohesive materials under multi-axial loading condition.
Flow aid devices, such as aeration pads, are commonly used in the industry to achieve proper flow of cohesive materials.
Overall, these examples exhibit that the extended 3-D DDA is now capable of accurately modeling the failure behavior of frictional-cohesive materials and structures, so as to optimize the material and structure stabilization or protection design.
In this paper, the DDM-based response sensitivity analysis methodology is applied to a pressure independent multi-yield-surface J2 plasticity material model, which has been used extensively to simulate the nonlinear undrained shear behavior of cohesive soils subjected to static and dynamic loading conditions.
Furthermore, the simulation can well represent the sieving behavior of cohesive powders.
During the excavation process by a bulldozing plate, the dynamic behavior of cohesive soil was simulated by DEM software PFC2D.
It is in the second category where the erosional and depositional behavior of cohesive sediments is particularly applicable.
Originally introduced to model crack tips in fracture mechanics, cohesive zone models are used to describe the constitutive behavior of cohesive interfaces since the early 1990s.
One such device is aeration pads which are used to maintain fluidization of fine powders and decrease cohesive behavior of bulk materials.
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