Nowadays, there are several methods to obtain simulation models for foams which consider important microstructural features. This research study presents a method to obtain low density foam models directly from computed tomography (CT) data. Finite element meshes are created from CT measurement results of a polypropylene extrusion foam with two different densities. Sensitivity studies with regard to the tension behaviour are performed with the microstructural models. The study shows that the tension behaviour highly depends on the examined area of the foam because the microstructure and density vary through the foam. Furthermore, the simulation results are validated with experimental results. The validation shows that the tension behaviour of the investigated foams characterised by the simulation approach is in good agreement with the experimentally observed behaviour and that specific microstructural characteristics (e.g. anisotropic cell shapes) are captured in the model.

目前，有几种方法可以获取考虑重要微观结构特征的泡沫模拟模型。本研究提出了一种直接从计算机断层扫描 (CT) 数据获得低密度泡沫模型的方法。有限元网格是根据具有两种不同密度的聚丙烯挤出泡沫的 CT 测量结果创建的。使用微观结构模型进行关于张力行为的敏感性研究。研究表明，拉伸行为高度依赖于泡沫的检测区域，因为泡沫的微观结构和密度各不相同。此外，仿真结果与实验结果相验证。