Three types of polymer including polyurethane, polyethylene, and polysulfone were used as filler inside composite tubes to evaluate their effects on the crashworthiness. The composite tube consisting of carbon fiber fabric and polyurethane was fabricated by resin transfer molding and subjected to impact loading. In addition, the finite element analysis with progressive failure and delamination was used to simulate the crushing behavior of the polymer-filled composite tube. From the comparison between experiment and simulation, the finite element analysis is reliable, could reasonably describe the crushing behavior of the polymer-filled tube, and has nice prediction on the crashworthiness performance. From both the experiment and simulation results, the polyethylene-filled composite tube has clearly higher specific absorbed energy than the hollow composite tube, and polyethylene could be considered as an effective filler. However, the other two types of polymer filler have no clear effect.

中文翻译：

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聚合物填充编织复合管的冲击断裂

三种类型的聚合物包括聚氨酯、聚乙烯和聚砜被用作复合管内的填料，以评估它们对耐撞性的影响。由碳纤维织物和聚氨酯组成的复合管通过树脂传递模塑成型并承受冲击载荷。此外，使用具有渐进破坏和分层的有限元分析来模拟聚合物填充复合管的压碎行为。从实验与模拟的比较来看，有限元分析是可靠的，能够合理地描述聚合物填充管的破碎行为，对耐撞性能有很好的预测。从实验和仿真结果来看，聚乙烯填充复合管的比吸收能明显高于中空复合管，聚乙烯可作为一种有效的填料。但是，另外两种聚合物填料没有明显的效果。