基于Patran/Nastran的连接单元模型对比仿真分析  

Comparison and analysis of connection element models based on Patran/Nastran software

作　　者：刘伟[1] 刘衰财[2] 方志晓 余梓豪 高维成[1] LIU Wei LIU Shuaicai FANG Zhixiao YU Zihao GAO Weicheng(School of Astronautics, Harbin University of Technology, Heilongjiang Harbin, 150001, China Shanghai Aircraft Design and Research Institute of COMAC, Shanghai, 201210, China Jiangxi Hongdu Aviation Industry Co. , Ltd. , Jiangxi Nanchang, 330001, China)

机构地区：[1]哈尔滨工业大学航天学院,黑龙江哈尔滨150001 [2]中国商飞上海飞机设计研究院,上海201210 [3]江西洪都航空工业股份有限公司,江西南昌330001

出　　处：《机械设计与制造工程》2017年第2期65-68,共4页Machine Design and Manufacturing Engineering

摘　　要：由于整体制造困难等原因,复合材料结构件之间存在大量的机械连接,连接处往往是结构关键危险部位,因此提高连接区安全性和经济性十分必要。基于此,以承受单向拉伸载荷的铝合金与复合材料层合板连接结构为研究对象,针对四螺栓单搭接结构模型,采用Patran/Nastran有限元软件对比分析了4种常用连接单元模型,分别获得了各种连接单元模型连接结构钉载分配、应力应变分布以及应力集中情况,分析结果对复合材料连接结构建模和分析有一定的参考意义。Composite structures has been rapidly developed and broadly used in engineering field. A mount of mechanical connections still exist in composite structures,and are used in the most dangerous places to improve their security and economic efficiency. Aiming at this,it investigates connection units of bolts between aluminum alloy and composite laminates under tension load,analyzes a single- lap model with four bolts in Patran / Nastran FEM software,obtains the pin- load distribution,stress- strain distribution and stress concentration corresponding to all four connection models. The results are helpful for modeling and analyzing composite- metal connecting structures.

关 键 词：连接单元 有限元模拟 钉载分配 应力集中 

分 类 号：V214.8[航空宇航科学与技术—航空宇航推进理论与工程]