In this research study, a methodology is introduced for generating finite element simulation models for low density closed cell foams based on computed tomography (CT) measurement results. Creating this kind of simulation models can be very expensive with regard to modelling and computational effort. Hence, a combined modelling technique based on CT data and Voronoi diagrams is developed that minimizes this effort, but nevertheless, generates simulation models with a realistic microstructure. In this article, the generation of simulation models using this modelling method and the necessary adaptation of the models concerning microstructural features to consider, for example, anisotropic properties of the foam, are described. Furthermore, simulations are performed to investigate the mechanical performance of the foam models and to compare the results with several analytical models and experimental data. Finally, conclusions regarding the applicability and possible further extensions of the model are provided.

在这项研究中，介绍了一种基于计算机断层扫描 (CT) 测量结果为低密度闭孔泡沫生成有限元模拟模型的方法。就建模和计算工作而言，创建这种模拟模型可能非常昂贵。因此，开发了一种基于 CT 数据和 Voronoi 图的组合建模技术，可以最大限度地减少这种工作，但仍然生成具有真实微观结构的模拟模型。在本文中，描述了使用这种建模方法生成模拟模型以及对涉及微观结构特征的模型进行必要的调整，以考虑例如泡沫的各向异性特性。此外，进行模拟以研究泡沫模型的机械性能，并将结果与​​几种分析模型和实验数据进行比较。最后，提供了关于模型的适用性和可能的​​进一步扩展的结论。