摘要
为降低防护设备门扇质量,提高轻质防护设备抗力性能,提出了一种蜂窝结构树脂基纤维增强复合材料防护设备设计方案。对蜂窝夹层结构进行了力学性能分析,对门扇进行了有限元数值仿真计算,并依托激波管试验平台对方案样机进行了抗力性能检测。结果表明:面层采用长纤维预浸料、芯层采用短切纤维的蜂窝夹层结构设计方法能够有效提高迎波面的抗冲击能力,同时增强纤维在薄壁结构中的流动填充性能,保证冲击波荷载作用下门扇强度的可靠性。当材料、壁面高度相同时,断面胞壁厚度与胞壁长度的比值越大,则蜂窝结构强度、刚度越大,稳定性越好。数值计算和试验结果表明:蜂窝结构复合材料防护设备具备良好的抗力性能,门扇的蜂窝芯层结构比强度、比刚度高,稳定性较好。
In order to reduce the weight of the door and improve the resistance performance of the light-weight protective equipment,a protective equipment design scheme of honeycomb structure resin based fiber reinforced composite material is proposed.It analyzes the mechanical properties of the honeycomb sandwich structure,carries out the finite element numerical simulation of the door and tests the resistance of the prototype by the shock tube test platform.The results show that the design method of honeycomb sandwich structure with long fiber prepreg and short fiber core can effectively improve the shock resistance in the face of shock wave,enhance the flow filling performance of the fiber in thin-walled structure,so as to ensure the strength reliability of the door under shock wave load.When the material and wall height are the same,the greater the ratio of cell wall thickness to cell wall length,the greater the strength,stiffness and stability of the honeycomb structure.The numerical calculation and test results show that the proposed scheme has good resistance performance and the honeycomb core structure of the door has high specific strength,specific stiffness and good stability.
作者
张晓辰
黄静华
王迎春
郭利平
王月桂
刘晓鸣
卢绪智
ZHANG Xiaochen;HUANG Jinghua;WANG Yingchun;GUO Liping;WANG Yuegui;LIU Xiaoming;LU Xuzhi(Institute of Defense Engineering,AMS,PLA,Beijing 100850,China)
出处
《防护工程》
2019年第2期24-30,共7页
Protective Engineering
关键词
蜂窝结构
纤维增强复合材料
防护设备
数值分析
honeycomb structure
fiber reinforced composite
protective equipment
numerical analysis
