摘要
研究了不同冲击方向下复合材料的冲击力学性能,设计不同纤维布料裁剪方式并分析原材料的使用率,设计易于铺层操作以及产品脱模的三片式模具,优化热压罐成型工艺,并进行了车轮冲击测试。结果表明,冲击测试时的冲击方向对复合材料的冲击性能有较大影响,相较于垂直于铺层方向的冲击性能,冲击方向平行于铺层方向的复合材料冲击性能更高,产品铺层中应根据冲击工况进行优化铺层设计;采用合适的裁剪结构设计提高了操作便利性,并且使材料利用率达到83.8%,大大节约了材料成本;采用优化热压罐成型工艺制备的复合材料轮毂在冲击静载荷为600 kg的13°冲击测试中未出现断裂情况,满足汽车车轮冲击测试的装车要求。
The mechanical properties in different impact directions of carbon fiber composites molded by autoclave were studied, different fiber cloth cutting patterns were designed and the utilization rate of materials was analysized. Three-part molds were de- veloped in favor of laying up fiber cloth and demolding. The autoclave forming process was optimized, and the 13° impact test was conducted. The results show that impact direction has great influence on the impact performance of fiber composites, and when the impact direction is parallel with the lay-up direction, the composites show much better performance, so the laying up should be optimized according to the actual conditions; the utilization rate of materials reaches to 83.8% by proper cloth cutting design, which makes cost less and operation easier;the composite wheel shows no fracture under the 13° impact test with 600 kg of impact load, meeting the impact property for automobile wheels.
出处
《材料开发与应用》
CAS
2016年第2期37-41,共5页
Development and Application of Materials
基金
中央高校基本科研业务费专项资金资助(15M1060104
15D128105)
关键词
碳纤维复合材料
轮毂
铺层设计
冲击性能
carbon fiber composites
automobile wheel
lay-up design
impact property
