编织碳纤维复合材料加强铝合金帽型薄壁梁动态弯曲特性研究  

STUDY ON DYNAMIC BENDING CHARACTERISTICS OF WOVEN CARBON FIBER COMPOSITE MATERIAL REINFORCED ALUMINUM ALLOY CAP THIN⁃WALLED BEAMS

作　　者：陈光[1,2] 杨宇杰 韩铎 刘烨 景国玺 CHEN Guang;YANG YuJie;HAN Duo;LIU Ye;JING GuoXi(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300401,China;Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles,Tianjin 300401,China;China North Engine Research Institute,Tianjin 300400,China)

机构地区：[1]河北工业大学机械工程学院,天津300401 [2]天津市新能源汽车动力传动与安全技术重点实验室,天津300401 [3]中国北方发动机研究所,天津300400

出　　处：《机械强度》2024年第4期867-876,共10页Journal of Mechanical Strength

基　　金：国防科技重点实验室基金项目(61422120301);河北省自然科学基金项目(E2020202017)资助。

摘　　要：金属/复合材料混合薄壁结构可同时满足汽车车身抗撞性和轻量化的要求。旨在对比研究不同纤维铺层方式铝/碳纤维复合材料(Aluminum/Carbon Fibre Reinforced Plastic,Al/CFRP)混合帽型薄壁梁的动态弯曲特性。通过三点弯曲试验比较分析各试件的弯曲失效行为与耐撞性能,结合试验结果建立有限元模型且验证其准确性,并进一步分析压头尺寸、压头形状和冲击位置对混合梁弯曲性能的影响。结果表明,铺层角度较铺层顺序对试件弯曲性能影响更大,压头尺寸越大、压头形状越相对扁平或冲击位置越远离中间时可获得较好的耐撞特性。研究所用方法与所得结论可为类似抗弯结构耐撞性设计提供参考。The metal/composite hybrid thin⁃walled structure can meet requirements of both crashworthiness and light⁃weight of auto body.Intended to compare the dynamic bending characteristic of Al/CFRP(Aluminum/Carbon Fibre Reinforced Plastic)hybrid beams with different fiber layup patterns,the bending failure behavior and crashworthiness of specimens were comparatively analyzed by three⁃point bending tests,and the finite element model was established in good agreement with experimental results.On this basis,the effects of punch size,punch shape and impact position on the bending performance of the hybrid beam were further analyzed.The results show that layup angle has a greater effect on the bending performance than the layup sequence.The larger the punch size,the flatter the punch shape or the further away from the middle the impact position is,the better the crashworthiness characteristic is.These methods used and these obtained conclusions can provide a reference for the crashworthiness design of similar bending resistant structures.

关 键 词：Al/CFRP 混合梁 动态弯曲 铺层方式 失效行为 耐撞特性 

分 类 号：TB332[一般工业技术—材料科学与工程]