基于隐式网格剖分技术的维诺多孔结构可编程调控吸能特性研究OA

In conventional numerical simulations of the mechanical behavior of porous structures,explicit manual modeling and meshing are commonly adopted,which are often labor-intensive and inefficient.To address this limitation,this paper proposes a framework for rapid numerical simulation of porous structures with arbitrary topologies,based on implicit geometric modeling and automatic mesh generation.Taking two-dimensional Voronoi-type porous structures as an example,the geometric models are constructed using implicit functions,and the meshes are automatically generated through implicit meshing techniques.For Voronoi structures with varying volume fractions,the corresponding finite element input files(e.g.,ABAQUS INP files)can be automatically generated,enabling efficient simulations and result extraction.Furthermore,to mitigate stress concentrations caused by geometric discontinuities,a filtering method is introduced to smooth abrupt regions in the generated Voronoi structures.The influence of this smoothing on the energy absorption characteristics under compression is also investigated.The results demonstrate that the proposed design method can efficiently generate 2D Voronoi porous structures,and the smoothed structures exhibit improved energy absorption performance under compression.The corresponding source code is available at https://github.com/hliu-whu.