变F-RD型点阵结构的参数分析与验证

Parameter Analysis and Verification of Variable F-RD-Type Lattice Structure

针对常规F-RD型点阵结构进行变形设计,提出一种基于隐式表达式的TPMS(three‑period minimal surface)参数设计方法,通过改变输入隐式表达式的变形参数来设计点阵结构;研究了F-RD型点阵结构变形参数和阈值对孔隙率的影响规律,提出了针对孔隙率分析的单参数和混合参数方法,建立了变形参数和阈值对变F-RD型点阵结构的映射关系,可以生成特定形状和孔隙率的F-RD型点阵结构;通过金属激光烧结成型原理制备AlSi10Mg样件,验证了变形参数和阈值对实际孔隙率的影响关系,为F-RD型点阵结构的工程设计和应用提供参考.

Aiming at the conventional F-RD-type lattice structure for deformation design,a TPMS parameter design method based on implicit expression is proposed to design the lattice structure by changing the deformation parameter inputted into the implicit expression;the influence law of the deformation parameter and the threshold value on the porosity of the F-RD-type lattice structure is investigated,the single parameter and mixed parameter methods for porosity analysis are proposed,the mapping relationship between the deformation parameter and the threshold value on the variable F-RD-type lattice structure is established,and the F-RD-type lattice structure with specific shapes and porosity can be generated;through the AlSi10Mg samples prepared by the metal laser sintering molding principle,the influence relationship of the deformation parameter and the threshold value on the actual porosity is verified,which provides a reference for the engineering design and application of TPMS lattice structures.