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Finite Element Analysis of EPP Foam Core/Self-Reinforced PP Sandwich Structures
Emerging Materials Research ( IF 2.2 ) Pub Date : 2020-11-04 , DOI: 19.00194
Harun Güçlü, İbrahim Kürşad Türkoğlu, Yücel Can, Murat Yazıcı

In this study, fully recyclable and elastic-plastic deformable sandwich panels were developed by considering the mass production requirements as well as the light-weighting needs of the automotive industry. Expanded Polypropylene (EPP) foam core and Self-Reinforced Polypropylene (SRPP) thermoplastic composite face sheets were selected to produce sandwich panels. Three-point bending experiments were performed to obtain the flexural behavior of the sandwich panels. The Finite Element Analysis (FEA) of the sandwich beams were studied and confirmed by experimental results. Three different EPP foam cores with densities of 65.7, 36.5, and 27 kg/m3, respectively, were used. The FEA models were built in Abaqus commercial software in 3D space, and analyses were performed using 3D elements. The crushable foam material model was selected for FEA from the Abaqus material model database to obtain the best correlation with the foam compression test results. The force-displacement results of the three-point bending FEA results were excellently correlated with the experiments. In three-point bending experiments of the sandwich panels, elastic-plastic deformation of the core with indentation failure were observed. The lowest density foam core sandwich beam showed the highest deformation and energy absorption performance. Also, deflection recovery was observed after load removal for all sandwiches.

中文翻译:

EPP泡沫芯/自增强PP夹芯结构的有限元分析

在这项研究中,通过考虑批量生产的需求以及汽车行业的轻量化需求,开发出了可完全回收利用和弹塑性可变形夹心板。选择了膨胀聚丙烯(EPP)泡沫芯和自增强聚丙烯(SRPP)热塑性复合材料面板来生产夹芯板。进行三点弯曲实验以获得夹心板的弯曲行为。研究了夹层梁的有限元分析(FEA),并通过实验结果进行了验证。三种不同的EPP泡沫芯,密度分别为65.7、36.5和27 kg / m 3分别使用。FEA模型是在3D空间中的Abaqus商业软件中构建的,并使用3D元素进行了分析。从Abaqus材料模型数据库中选择FEA的可压碎泡沫材料模型,以获得与泡沫压缩测试结果的最佳相关性。三点弯曲有限元分析结果的力-位移结果与实验具有很好的相关性。在夹心板的三点弯曲实验中,观察到了带有压痕破坏的芯部的弹塑性变形。最低密度的泡沫芯夹层梁表现出最高的变形和能量吸收性能。此外,所有三明治的负载去除后,都观察到挠度恢复。
更新日期:2020-11-04
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