News

DEMSLab 5.3 released on December 25, 2023.

• The coupling module between DEMSLab and RecurDyn for flexible bodies is supplied.

• The convenience of coupling with RecurDyn has been enhanced.

• The import of geometry files in OBJ format has been added.

• The wall format file import for RecurDyn has been added.

• The stability of coupling with RecurDyn has been enhanced.

• The MBD-DEM coupling algorithm has been improved to allow DEMLab to stop at any time by pressing cancel button.

• The STL simplification algorithm has been improved to avoid over simplification when the number of triangular faces is small.

• The automatic simplification function when importing STL files has been added to ensure the quantity and quality of the triangular faces on geometry.

• The reading algorithm for ASCII format STL files has been improved to significantly increase the reading speed (by nearly 10 times).

• The neighbor search algorithm has been improved to efficiently simulate particle systems with a wide particle size distribution (allowing for a particle diameter ratio greater than 1000).

• The Richter-Nikrityuk convective heat transfer model suitable for non-spherical particles has been added.

• The heat conduction model between super-ellipsoidal particles has been improved (calculated using the average curvature radius at the contact point).

• The heat conduction model between polyhedral particles has been improved (calculated using the projected area of the contact volume).

• The energy allocation method of the Impact Energy Erosion Model (IEEM) has been improved.

• The total liquid volume control method in the capillary force model has been changed to set the relative volume of the liquid between two contact particles or particle and wall.

• The User C function of liquid content in capillary force model has been added.

• The User C function of work of adhesion in surface cohesive force model has been added.

• Reducing unnecessary calls to User C functions to significantly improve computational efficiency when including User C functions.

• Improved the algorithm to significantly enhance computational efficiency when both moving boundaries and seeders exist simultaneously in the simulation.

• The use of memory space has been reduced by modifying data structures.

• Change the animation perspective from Euler angle based to quaternion based to avoid abnormal perspective conversion.

• Improved the computational stability of contact between complex boundary with extreme triangular faces and particle.

• Improved the algorithm from deleting a pair of particles to deleting a smaller particle when the contact overlap between particles is too large.

• The exception handling of particles embedded in the device has been increased.

• Improved several other algorithms to enhance computational stability.

• Improve the usability of some GUIs.

• The bug of uncontrolled producing a large number of small fragments in the breakage model has been cleared.

• The bug as displaying of bonded-spheres in version 5.2 has been cleared.

• Many other small bugs have been cleared.

• This version was released on December 25, 2023.