Modeling and Mechanical Properties Analysis of Irregular Lattice Structures Based on Voronoi
Lattice structure has attracted much attention because of its excellent mechanical properties such as light weight,high porosity,high specific strength,high energy absorption,and special properties such as shock absorption,sound absorption and heat dissipation.With the rapid development of additive manufacturing industry,the irregular design and re-alizability of lattice structure have ushered in a new period of development.Using Voronoi principle and parametric design platform Grasshopper,three kinds of irregular lattice structures with seed numbers of 10,15 and 20 are designed and con-structed.The compression process is simulated by finite element analysis using LS-DYNA explicit dynamics program.The mechanical properties of the three irregular lattice structures are analyzed by comparing the stress,strain and energy absorp-tion during compression.The simulation results show that the number of seeds has an important effect on the mechanical properties of the irregular lattice structure.Within a certain limit,increasing the number of seeds can improve the mechani-cal properties of the irregular lattice structure.
万方数据
维普
