The material-point method for granular materials
نویسندگان
چکیده
منابع مشابه
The Material-Point Method for Granular Materials
A model for granular material is presented that describes both the internal deformation of each granule and the interactions between grains. The model, which is based on the FLIP-Material Point, particle-in-cell method, solves continuum constitutive models for each grain. Interactions between grains are calculated with a contact algorithm that forbids interpenetration, but allows separation and...
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We show that a mixture of two species of granular particles with equal sizes but differing densities can be either segregated or mixed by adjusting the granular temperature gradient and the magnitude of the gravitational force. In the absence of gravity, the dense, heavy particles move to the colder regions. If the temperature gradient is put into a gravitational field with the colder regions a...
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The material point method (MPM) is a meshfree mixed Lagrangian-Eulerian method which utilizes moving Lagrangian material points that store physical properties of a deforming continuum and a fixed Eulerian finite element mesh to solve the equations of motion for individual time steps. MPM proved to be successful in simulating mechanical problems which involve large deformations of history-depend...
متن کاملSupplemental Document: An Adaptive Generalized Interpolation Material Point Method for Simulating Elastoplastic Materials
Since the introduction of the material point method to the graphics community, researchers tend to focus on defining the weighting function as a direct relation between a particle and the grid nodes in its immediate vicinity, e.g. a quadratic B-spline function, as shown in Figure 1a. GIMP is another alternative which downgrades the C requirement to C and then uses a convolution to resume the C ...
متن کاملComparison of a Material Point Method and a Galerkin Meshfree Method for the Simulation of Cohesive-Frictional Materials
The simulation of large deformation problems, involving complex history-dependent constitutive laws, is of paramount importance in several engineering fields. Particular attention has to be paid to the choice of a suitable numerical technique such that reliable results can be obtained. In this paper, a Material Point Method (MPM) and a Galerkin Meshfree Method (GMM) are presented and verified a...
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ژورنال
عنوان ژورنال: Computer Methods in Applied Mechanics and Engineering
سال: 2000
ISSN: 0045-7825
DOI: 10.1016/s0045-7825(99)00338-2