三点弯曲工况下编织碳纤维复合材料方管的材料特性研究  

RESEARCH ON THE MATERIAL CHARACTERISTICS OF WOVEN CARBON FIBER COMPOSITE SQUARE TUBES UNDER THREE⁃POINT BENDING LOAD

作　　者：陈光[1,3] 冯玉鹏[1,3] 解东旋 肖森 景国玺 CHEN Guang;FENG YuPeng;XIE DongXuan;XIAO Sen;JING GuoXi(Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles,Hebei University of Technology,Tianjin 300401,China;School of Computer Science&Engineering,Changchun University of Technology,Changchun 130000,China;School of Mechanical Engineering,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学天津市新能源汽车传动与安全技术重点实验室,天津300401 [2]长春工业大学计算机科学与工程学院,长春130000 [3]河北工业大学机械工程学院,天津300401

出　　处：《机械强度》2023年第3期598-606,共9页Journal of Mechanical Strength

基　　金：河北省自然科学基金项目(E2019202201,E2020202017);河北省高等学校科学技术研究项目(QN2019123)资助;国防科技重点实验室基金项目(61422120301)。

摘　　要：在汽车碰撞产生的弯曲载荷下,复合材料安全构件应具有抵抗变形和耗散碰撞能量的能力。为确定三点弯曲工况中编织碳纤维复合材料薄壁梁的渐进损伤材料模型力学参数,开展了编织碳纤维复合材料力学特性试验和编织碳纤维复合材料方管三点弯曲试验,获得了该材料的基本力学参数、弯曲失效历程及力-变形特性。进而分析了渐进损伤材料模型中各非试验参数对仿真结果的影响,讨论了多层壳建模方法的有效性。通过与试验结果的对比,获得了复合材料渐进损伤模型的非试验参数和有效的仿真建模方法。获得的材料特性可用于该材料结构在相似工况中的碰撞仿真分析。Under the bending load generated by automobile collision,the composite safety components should have the ability to resist deformation and dissipate crashworthiness energy.In order to determine the mechanical parameters of the progressive damage material model of a woven carbon fiber composite thin⁃walled beam in the three⁃point bending condition,the mechanical properties test of the woven carbon fiber composite material and the three⁃point bending experiment of square tubes made by this material were carried out,thus got the basic mechanical parameters,bending failure history and force⁃deformation characteristics.Then the effects of the non⁃test parameter in the progressive damage material model on the simulation results were analyzed and the effectiveness of the multilayer shell modeling method were discussed.By comparing with the experimental results,the non⁃experimental parameters and effective simulation modeling methods for the progressive damage model of composite materials were gotten.The obtained material properties can be used for the crashworthiness simulation analysis of this material structure in similar working conditions.

关 键 词：平纹编织碳纤维增强复合材料 力学特性 三点弯曲 材料模型 模型标定 

分 类 号：U456.6[建筑科学—桥梁与隧道工程]