Design and stability analysis for morphological optimized mega-latticed structures

Volume Title: ICASGE2025

Paper ID : 1012-ICASGE-FULL (R1)

Xihua University

In this paper, a novel equilibrium-based form-finding approach for a mega-latticed structure is presented based on vector-based 3D graphic statics and the Combinatorial Equilibrium Modelling (CEM). This approach can be effectively applied to the conceptual design phase of the structures with various design objectives. It allows us to adjust the design parameters in real time during the design phase and to obtain the forms immediately. The resultant forms have a better state of internal membrane forces compared to the original spherical structure. An ANSYS Parameter Design Language (APDL)-based automatic geometric modelling method for mega-latticed structures with various surface forms is developed. The proposed method solves the problem that the existing modelling methods are only available for spherical structures. It is highly applicable for modelling mega-latticed structures with spherical, cylindrical, and other heterogeneous surfaces. Furthermore, a complete design workflow that combines the proposed form-finding approach (for conceptual design), the automatic geometric modelling method (for transformation), and the finite element method (for deepening design and analysis), is discussed. This paper provides a reference for the design of mega-latticed structures and similar spatial structures.

Mega-latticed structure; Structural conceptual design; Automatic geometric modelling; Combinatorial Equilibrium Modelling; Finite element analysis

Steel Structures (STL)