2 results about "Particle radius" patented technology

This invention discloses a method for constructing a microscopic numerical model of granular flow that considers stress field distribution characteristics. It relates to the field of microscopic numerical simulation in geotechnical engineering. The method uses AutoCAD to construct the boundary and generate a continuous numerical grid. Particles are then deployed one by one using element domain control. The self-weight stress of the particles is considered. By combining the addition of particles and the change of particle radius, the particle system is made to tightly bond together, thereby forming a dense slope microscopic feature with controllable coordination number and mechanical properties that gradually increase from the surface to the interior. This ensures that the microscopic particle model fills the entire modeling range under the stress field distribution conditions, thus ensuring the accuracy of the microscopic geometric dimensions.

Methods for specimen preparation and for characterization of internal three-dimensional deformation of specimen are provided. Firstly, a plurality of first digital particle models are generated, and a plurality of first volumetric images are generated based on central point positions of the speckle particles simulated by each first digital particle model of the plurality of first digital particle models. A simulated optimal particle radius value and a simulated optimal volume fraction value corresponding to speckle particles included in a target specimen are determined based on all the first volumetric images. Finally, the target specimen may be prepared based on the simulated optimal particle radius value and the simulated optimal volume fraction value corresponding to the speckle particles included in the target specimen. The plurality of first digital particle models generated through numerical simulation are processed and calculated to obtain distribution parameters of the speckle particles in the target specimen.