Aspherix® offers a wide range of models for the accurate representation of bulk materials and the processes that they are used in. While some of them are required to depict the physics correctly, others such as coarsegraining and load balancing serve the purpose of increasing the computational efficiency.
The geometry of the rigid body is imported as a surface mesh from an STL file. Mass, center of mass and moments of inertia are specified in the according mesh module. External forces,including particle-wall forces determine the geometry motion.
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6-DOF plate motion
This video shows the motion of a plate around a central hinge. The body rotation is determined by the particle-wall forces and by an external torque that acts in opposition to the rotation around the hinge.
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Description
Effect of segregation on heat transfer (link).
Top: constant temperature of 300 K
adiabatic walls
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Bottom: constant temperature of 800 K
Mixing simulation of cohesive (right) and non-cohesive (left) material. In this project we investigated the mixing efficiency of the geometry, the change of the mixing efficiency for different materials (see graph in video), the residence time distribution and design questions of the mixer geometry.
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The animation shows the deformation of the mesh caused by wear. The Finnie wear model was used to predict the deformations.
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Description
Real convex shapes without inward facing components can be imported easily from 3D CAD files.
CATEGORY
Complex shapes
COMBINED WITH
SPH, FEA, MBD, Wear
C++ API
Yes
Calibration of compacted soil with a moisture of 13% using the vane shear test. The approach is based on literature (Karmakar & Kushwaha, 2007).
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Aspherix® can simulate materials with rheological models to match storage and loss modulus in oscillatory rheometer tests.
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The geometry of the rigid body is imported as a surface mesh from an STL file. Mass, center of mass and moments of inertia are specified in the according mesh module. External forces,including particle-wall forces determine the geometry motion.
By loading the video, you agree to Vimeo's privacy policy.
Learn more
By loading the video, you agree to Vimeo's privacy policy.
Learn more
6-DOF plate motion
This video shows the motion of a plate around a central hinge. The body rotation is determined by the particle-wall forces and by an external torque that acts in opposition to the rotation around the hinge.
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The new insertion command
The new packing generator introduces the following functionalities:
Description
Real convex shapes without inward facing components can be imported easily from 3D CAD files.
CATEGORY
Complex shapes
COMBINED WITH
SPH, FEA, MBD, Wear
C++ API
Yes
In coarsegraining we represent groups of particles by single, larger particles while at the same time we maintain the original properties of the bulk material. This requires scaling laws.
In the animation we are comparing the original simulation (3700 particles) to two cases with less, larger particles (462). In the “enlarged” case we simply use larger particles with the same material properties as the original material, in the “coarse-grained” case we apply the required scaling laws.
A comparison of the wear on the chute shows that the results for the original and the coarsegrained case match while the “enlarged” case shows strong deviations.
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Description
