刘军舰,胡豪胜,周磊,等.非均质秸秆纤维复合材料保险杠蒙皮刚度分析[J].精密成形工程,2022,14(3):107-115.
LIU Jun-jian,HU Hao-sheng,ZHOU Lei,et al.Stiffness of Heterogeneous Bumper Fascia Made by Straw Fiber Composites[J].Journal of Netshape Forming Engineering,2022,14(3):107-115. |
| 非均质秸秆纤维复合材料保险杠蒙皮刚度分析 |
| Stiffness of Heterogeneous Bumper Fascia Made by Straw Fiber Composites |
| 投稿时间：2021-09-02 |
| DOI：10.3969/j.issn.1674-6457.2022.03.014 |
| 中文关键词: 微发泡 植物纤维复合材料 非均质 力学性能 |
| 英文关键词: micro foamed plant fiber composite heterogeneous mechanical property |
| 基金项目:国家自然科学基金(51605356);中央高校基本科研业务费专项资金(WUT 2019Ⅲ116CG) |
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| 摘要点击次数: 1986 |
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| 中文摘要: |
| 目的 研究非均质秸秆纤维复合材料保险杠蒙皮的刚度性能。方法 采用试验与模拟分析的方法，通过共混挤出与化学发泡注塑工艺制备微发泡秸秆纤维/聚丙烯(SF/PP)复合材料试样，通过试验测试非均质结构试样的力学性能与微观结构，通过有限元分析手段建立非均质微发泡秸秆纤维/PP复合材料结构分析模型，并分析非均质材料保险杠蒙皮的刚度性能。结果 微发泡秸秆纤维/聚丙烯(SF/PP)复合材料的微观结构有明显的“三明治”结构特点，秸秆纤维主要分布在外皮层，泡孔主要分布在芯层。将非均质秸秆纤维复合材料保险杠蒙皮近似为3层复合板结构，建模的刚度分析结果与试验测试相差约6%。结论 非均质秸秆纤维复合材料汽车注塑件可近似为3层复合板结构进行数值分析，简化了分析过程，研究结果可用于指导产品性能评估，提高产品开发效率。 |
| 英文摘要: |
| The work aims to research the stiffness of bumper fascia made of micro foamed straw fiber/polypropylene (SF/PP) composites. Micro foamed SF/PP composites were prepared by blending extrusion and chemical foaming injection processes. The mechanical properties and microstructure of heterogeneous samples were tested by experiment. A structure analysis model of heterogeneous micro foamed straw fiber/PP composite was established through finite element analysis. The stiffness performance of the composite bumper fascia was analyzed. The results showed that the microstructure of micro foamed SF/PP composites had obvious "sandwich" structure characteristics. Straw fibers were mainly distributed in the outer skin layer and bubbles were mainly distributed in the core layer. The difference between the analysis results and the experimental test was about 6%. The automobile injection parts of heterogeneous straw fiber composite can be approximated to a three-layer composite plate structure for numerical analysis, which simplifies the analysis process. The research results can be used to guide product performance evaluation and improve product development efficiency. |
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