Sisca Lorenzo, Locatelli Quacchia Patrizio Tiziano, Messana Alessandro, Airale Andrea Giancarlo, Ferraris Alessandro, Carello Massimiliana, Monti Marco, Palenzona Marta, Romeo Andrea, Liebold Christian, Scalera Salvatore, Festa Alberto, Codrino Paolo
Mechanical and Aerospace Engineering Department Italy, Politecnico di Torino, 10129 Turin, Italy.
Proplast, 15122 Alessandria, Italy.
Polymers (Basel). 2020 Nov 26;12(12):2801. doi: 10.3390/polym12122801.
This research work investigated the influence of the press molding manufacturing process on the mechanical properties, both for thermoplastic and thermosetting fiber reinforced composite materials. The particular geometry of the case study, called Double Dome, was considered in order to verify the behavior of the Thermoplastic and Thermosetting prepreg in terms of shell thickness variation and fibers shear angle evolution during the thermoforming process. The thermoforming simulation was performed using LS-DYNA Finite Element Analysis (FEA) code, and the results were transferred by Envyo, a dedicated mapping tool, into a LS-DYNA virtual model for the structural simulation. A series of Double Dome specimens was produced with industrial equipment, and a bending experimental test was been carried on. Finally, a numerical-experimental correlation was performed, highlighting a significant forecast of the mechanical properties for the considered component.
本研究工作调查了模压成型制造工艺对热塑性和热固性纤维增强复合材料机械性能的影响。为了验证热塑性和热固性预浸料在热成型过程中壳厚度变化和纤维剪切角演变方面的行为，考虑了名为双穹顶的案例研究的特定几何形状。使用LS-DYNA有限元分析（FEA）代码进行热成型模拟，并通过专用映射工具Envyo将结果传输到用于结构模拟的LS-DYNA虚拟模型中。使用工业设备制作了一系列双穹顶试样，并进行了弯曲实验测试。最后，进行了数值与实验的相关性分析，突出了对所考虑部件机械性能的显著预测。
