Influence of Structural Parameters on Tensile Properties of AlSi10Mg Diamond Lattice Structures Prepared by Selective Laser Melting
Because of the advantages of large degree of freedom in structure design,light weight,cushioning,shock absorption,heat insulation and heat dissipation,the metal lattice structures formed by selective laser melting has a broad prospect in engineering application in aerospace and other fields.With the development of applications,the tensile properties of lattice structures are required.Through finite element simulation,the influence of diamond unit structure parameters on the tensile properties of AlSi10Mg lattice structures was studied and verified by experiments.The results show that the lattice structures has good forming effect and stable mechanical properties.The strut diameter and porosity have significant influence on the tensile strength of lattice structures.With the decrease of ratio of length to diameter,the stress concentration area of lattice structures moves from the node to the middle position of strut.When the ratio of length to diameter is about 1.4,the stress distribution of lattice structures is relatively uniform.The stress distribution of lattice structures can be more even if the lattice structures is covered with thin shell.The experimental results are in agreement with the simulation results,and the tensile properties and deformation failure modes of lattice structures can be predicted effectively by finite element method.
lattice structuresselective laser meltingfinite element simulationtensile properties
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