Abstract
An effective method for 3D lattice structure design is proposed using the volumetric distance field (VDF) based on analytic shape functions. By the innovative synthesis of lattice structure and VDF-based Boolean operations, a variety of computational models with intricate exterior shape and arbitrary lattice structure can be constructed. The significant advantage is that this design method can be easily applied to design highly complex lattice structure models. The important parameters such as the cell type and the size of lattice structure are controllable in customized MATLAB program. Design results verify that the presented design method is efficient to generate 3D models with required lattice structure.
Highlights
Additive manufacturing (AM) is advanced and promising technology with the geometric freedom that make it possible to create more complex parts containing internal cellular microstructures than ever before [1,2]
There are five unit cells to be created using the volumetric distance field shown in Fig.1: Simple Cubic (SC), Body-centered Cubic (BCC), Face-centered Cubic (FCC), Diamond Cubic (DC) and OCTET Cubic (OC)
We construct upper and lower plate using the volumetric distance field (VDF) of a box defined by Eq (2) and take BCC topology as core structure
Summary
Additive manufacturing (AM) is advanced and promising technology with the geometric freedom that make it possible to create more complex parts containing internal cellular microstructures than ever before [1,2]. Lattice structure is famous for its lightweight and for the high specific strength and stiffness [6,7,8]. It is an excellent multi-functional material more noted for some special properties including energy absorption and heat dissipation [9,10,11,12,13,14]. The research and development of materials and structure design are urgently required to realize the multi-functional performance of lattice structures with tailored mechanical properties
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