DDSM: Design-Oriented Dual-Scale Shape-Material Model for Lattice Material Components

This paper proposes a new CAD model for the design of lattice material components. The CAD model better captures the user's design intent and provides a dual-scale framework to represent the geometry and material distribution. Conventional CAD model formats based on B-Rep generate millions of data files, which also makes design intent and material information missing. In the present work, a new shape-material model for lattice material components is proposed. At the macroscopic scale, a compact face-based non-manifold topological data structure is proposed to express the lattice shape-material information without ambiguity. At the microscopic scale, implicit function is adopted for the representation of lattice material components. Numerical experiments verify that the proposed CAD model provides a powerful support for design intent with minor space costs. Meanwhile, the representation method supports solid modeling queries of geometric and material information on each scale.

Automated summary

This paper proposes a new CAD model for lattice material components design, which captures the user's design intent and provides a dual-scale framework for geometry and material distribution representation. Compared with conventional CAD models, the proposed model avoids missing design intent and material information caused by millions of data files. It provides a compact representation at the macroscopic scale and an implicit function representation at the microscopic scale, supporting design intent with minor space costs and solid modeling queries of geometric and material information on each scale.