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作 者:蔡继文 贡智兵 陶杨洋 CAI Jiwen;GONG Zhibing;TAO Yangyang(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;College of Material science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Nanjing Kangni Mechanical and Electrical Co.,Ltd.,Nanjing 210038,China)
机构地区:[1]南京航空航天大学机电学院,江苏南京210016 [2]南京航空航天大学材料学院,江苏南京210016 [3]南京康尼机电股份有限公司,江苏南京210038
出 处:《机械制造与自动化》2020年第6期124-127,共4页Machine Building & Automation
摘 要:碳纤维具有较高的比强度,可以实现轨道交通的轻量化需求。采用对称铺层方式对轨道车辆车门用碳纤维层合板的铺层形式进行了设计,并且对层合板进行冲击仿真,发现在内蒙皮的上铺层中最大应力达到178.5 MPa。通过损伤分析发现各向同性的单层板发生损伤的面积比有铺设角度的各向异性单层板更大。在此基础上设计了碳纤维蜂窝夹芯门板,对门板进行弯曲仿真。结果表明,最大应力出现在蜂窝的边角上,达到了246.5 MPa;而碳纤维层合板的应力分布均较小,最大值只有40.03 MPa。Carbon fiber is characteristic of high specific strength,the rail vehicle made of it meets the lightweight demand.The symmetrical lay-up method is used to form the carbon fiber laminates for rail vehicle doors,and the laminates are subjected to the simulated impact.It is found that the maximum stress in the upper cladding of the inner skin is up to 178.5 MPa.Through the damage analysis,it is found that the damaged area of isotropic single-layer board is larger than one of anisotropic single-layer boards with laying angles.Based on this,a carbon fiber honeycomb sandwich door panel is designed,and the bending simulation of the door panel is done.The results show that the maximum stress appearing at the corners of the honeycomb is up to 246.5 MPa;while the stress distribution of the carbon fiber laminates is small,its maximum value is only 40.03 MPa.
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