一种用于注塑短玻璃纤维增强热塑性复合材料寿命预测的疲劳损伤模型。

Amjadi Mohammad, Fatemi Ali

Mechanical Engineering Department, University of Memphis, Memphis, TN 38152, USA.

Polymers (Basel). 2021 Jul 9;13(14):2250. doi: 10.3390/polym13142250.

Short glass fiber-reinforced (SGFR) thermoplastics are used in many industries manufactured by injection molding which is the most common technique for polymeric parts production. Glass fibers are commonly used as the reinforced material with thermoplastics and injection molding. In this paper, a critical plane-based fatigue damage model is proposed for tension-tension or tension-compression fatigue life prediction of SGFR thermoplastics considering fiber orientation and mean stress effects. Temperature and frequency effects were also included by applying the proposed damage model into a general fatigue model. Model predictions are presented and discussed by comparing with the experimental data from the literature.

短玻璃纤维增强（SGFR）热塑性塑料被用于许多通过注塑成型制造的行业，注塑成型是聚合物零件生产中最常见的技术。玻璃纤维通常作为热塑性塑料和注塑成型的增强材料。本文提出了一种基于临界平面的疲劳损伤模型，用于考虑纤维取向和平均应力效应的SGFR热塑性塑料的拉-拉或拉-压疲劳寿命预测。通过将所提出的损伤模型应用于一般疲劳模型，还考虑了温度和频率效应。通过与文献中的实验数据进行比较，给出并讨论了模型预测结果。