Dynamic simulation of additively manufactured lattice structures based on variable cross-section beam elements
To meet the high-precision and efficient simulation needs for the static and dynamic performance of large-scale lattice structures,this paper proposes a simulation analysis method for the calibration of tapered beams in lat-tice structures.Based on the dynamic response of 3D printed specimen,an inverse problem model for the geometric parameters of the tapered beam element is established and solved.For lattice structures with different diameters,the inverse problem calibration of the tapered beam parameters is carried out respectively,and an interpolation mod-el for the geometric parameters of the tapered beam as a function of rod diameter is established.Finally,the effec-tiveness of the interpolation model for the geometric parameters of the variable cross-section beam is verified for lat-tice structures with different rod diameters and gradient lattices.Results show that:compared with the solid ele-ment model-based simulation analysis model,the simulation analysis model of tapered beam element established in this study not only has comparable dynamic performance simulation accuracy but also significantly improves the effi-ciency of analysis.
additive manufacturinglattice structuresvariable cross-sectioninverse problem solvingdynamic simulation
万方数据
维普
