PAR/VGS bim-material modeling

High VBP accuracy

Two methods handle low and high volumetric block proportions, achieving both fast and accurate 3D modeling of bim-materials.

Li, Kai · Sun, Shaorui · Wei, Jihong · Zhu, Minyi · Huang, Yu · Zheng, Hu

Computers and Geotechnics 2026

Specifications

Modeling deviation

{'zh': '0.42', 'en': '0.42'} %

Modeling deviation

{'zh': '0.11', 'en': '0.11'} %

DEM sphere model deviation

{'zh': '2.08', 'en': '2.08'} %

DEM sphere model deviation

{'zh': '0.35', 'en': '0.35'} %

Advantages

Fast and accurate modeling

By combining block placement with a rebound mechanism, complex collision detection is avoided, greatly improving efficiency.

Accurate for high VBP

The VGS method developed for high volumetric block proportions achieves deviations as low as 0.11%–0.15%.

Works with DEM

When blocks are modeled as spheres in discrete element simulation, deviations remain low at 0.35%–0.90% for high VBP.

Applications

• Geotechnical numerical simulation：Quickly generate high-precision 3D models, saving modeling time and improving computational reliability.
• Block-in-matrix composites：Two algorithms handle different block proportions, overcoming limitations of traditional modeling.