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.
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