摘要
采用有限元数值仿真和试验验证相结合的方法研究了复合材料Kagome点阵夹芯结构的平压性能,分析了不同结构参数对Kagome点阵夹芯结构平压性能及失效模式的影响。结果表明,在平压载荷下,杆件直径对Kagome点阵夹芯结构的平压峰值载荷幅度影响较大,而芯子高度和杆件角度对峰值载荷幅度影响较小,夹芯结构失效的主要形式有杆件变形最大处断裂、杆件与面板连接处断裂、杆件交叉连接处断裂等。通过对比Kagome点阵夹芯结构有限元数值仿真结果与平压试验结果,验证了有限元模型的可靠性。
The compression properties of composite Kagome lattice sandwich structure were studied by the combination of finite element numerical simulation and experimental verification.The effects of different structural parameters on the flattening properties and failure modes of Kagome lattice sandwich structure were analyzed.The results show that under the compression load,the diameter of the rod has great influence on the peak load amplitude of the Kagome lattice sandwich structure,while the height of the core and the angle of the rod have little influence on the peak load amplitude.The main failure modes of the sandwich structure include fracture at the maximum deformation of the rod,fracture at the connection between the rod and the panel and fracture at the cross connection.By comparing the finite element numerical simulation results of Kagome lattice sandwich structure with the flat compression testing results,the reliability of the finite element model is verified.
作者
裴勇勇
虞筱琛
徐海兵
吕东喜
祝颖丹
PEI Yongyong;YU Xiaochen;XU Haibing;LU Dongxi;ZHU Yingdan(Zhejiang Provincial Key Laboratory of Robotics and Intelligent Manufacturing Equipment Technology,Ningbo Institute of Materials Technology&Engineering,Chinese Academy of Sciences,Ningbo 315201,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《复合材料科学与工程》
CAS
北大核心
2023年第5期5-11,共7页
Composites Science and Engineering
基金
国家自然科学基金(U1909220,52177056)
浙江省自然科学基金(LD22E050011,LY21E030012)
2025重大专项(2021Z124,2021Z025,2019B10112)
浙江省科技创新人才(2019R52029)。
关键词
点阵结构
Kagome芯
有限元
平压性能
复合材料
lattice sandwich structure
Kagome core
finite element
compression properties
composites
