一种基于Voronoi图的三维开孔泡沫模型构建方法  

A method for constructing a 3D open-cell foam model based on Voronoi diagram

作　　者：屈青珩 QU Qingheng(National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi’an 710065,China)

机构地区：[1]中国飞机强度研究所强度与结构完整性全国重点实验室,西安710065

出　　处：《航空工程进展》2024年第5期58-66,共9页Advances in Aeronautical Science and Engineering

摘　　要：开孔泡沫材料是一种可以满足航空航天等高新技术领域实际需求的先进的功能结构一体化材料,在工程实际生产应用方面有较好的发展前景。关于三维开孔泡沫的力学模型研究已经得到了一定的发展,但是在声学方面鲜有研究。提出一种利用Voronoi图构建三维开孔泡沫模型的方法,用于模拟开孔泡沫微结构的几何特性,并定义扰动因子K来衡量微观结构的不规则程度;利用光敏树脂打印技术生成对应的实物模型,并通过力学及声学实验与仿真对生成模型的准确性进行验证。结果表明:生成的带有截面属性的开孔泡沫实体模型可以导入多种有限元软件完成力学、声学等有限元计算,对三维Voronoi开孔泡沫模型的构建提供了思路和方法,对多孔材料的进一步性能研究和生产制备具有借鉴意义。Open-cell foam material is an advanced functional and structural integration material,which can meet the practical needs of aerospace and other high-tech fields,and has a good prospect in practical engineering production applications.The research on the mechanical model of 3D open-cell foam has been developed,but there is little re-search on the acoustic model.A method of constructing a 3D open-cell foam model using Voronoi diagram is pro-posed to simulate the geometrical characteristics of the open-cell foam micro structure,and the disturbance factor K is defined to measure the degree of irregularity of the micro structure.The photosensitive resin printing technology is used to generate the corresponding physical model,and its accuracy is verified with mechanical and acoustic ex-periments and simulations.The results show that the generated porous foam solid model with cross-section proper-ties can be imported into a variety of finite element software to complete the finite element calculation such as me-chanics and acoustics,which can provide an idea and method for the construction of three-dimensional Voronoi open-cell foam model,and has certain reference significance for the further study of properties and production of po-rous materials.

关 键 词：VORONOI图 三维开孔泡沫模型 扰动因子 光敏树脂打印 有限元仿真 

分 类 号：V250[一般工业技术—材料科学与工程]