《冲击载荷下油箱力学特性的有限元分析》-毕业论文设计（学术).doc

1 编号 南京航空航天大学 毕业论文 题 目 HYPERLINK javascript:sendReq2(/student/declare1s.asp,SubjectID=201170203729582); 冲击载荷下油箱力学特性的有限元分析 学生姓名 学 号 010710508 学 院 航空宇航学院 专 业 飞行器设计与工程 班 级 0107105 指导教师 教授 二零一一年六月 PAGE HYPERLINK javascript:sendReq2(/student/declare1s.asp,SubjectID=201170203729582); 冲击载荷下油箱力学特性的有限元分析 摘 要 自从人造高速飞行器飞机的出现，鸟类在空中的飞行与人类的活动产生了重叠。由于飞机飞行速度快，与飞鸟发生碰撞后常造成极大的破坏，严重时会造成飞机的坠毁。随着科技的发展，火箭、航天飞机以及高速铁路技术的发展，鸟撞事件的发生范围，发生频率逐渐增多。因此，对于鸟撞而引发的危害以及预防成为亟待研究的课题之一。应用有限元工程分析软件，模拟飞鸟撞击油箱的过程，计算出撞击油箱发生的破坏情况，包括油箱的变形，应力、应变分布等情况。熟练掌握有限元工程软件的建模，网格划分，模拟计算等各项操作。本人选取abaqus软件对油箱受到高速冲击载荷状态下的受力进行了有限元分析。应用abaqus计算出撞击油箱发生的破坏情况，包括油箱的变形，应力、应变分布等情况，希望能为实际的生产作出指导性建议，提高飞机飞行的安全条件，保证飞机油箱的强度结构。 关键词：冲击载荷，碰撞，飞机油箱，abaqus  Mechanical properties of the fuel tank under impact load finite element analysis Abstract Since the emergence of man-made aircraft, high-speed aircraft, the flight of birds in the air and the overlap of human activities. As aircraft speed, after a collision with birds often cause great damage to the aircraft will cause a serious crash. With the development of technology, rockets, space shuttles and high-speed railway technology, the scope of bird strike events, the frequency gradually increased. Therefore, for the harm caused by bird strike and prevention as well as one of the topics to be studied. Engineering finite element analysis software to simulate the process of the birds hit the fuel tank, fuel tank to calculate the impact the damage occurred, including the fuel tank of the deformation, stress, strain distribution and so on. Familiar finite element engineering software for modeling, meshing, simulation and other operations. I select the abaqus software, high-speed impact loading tank by the force under the finite element analysis. Applied to calculate the impact abaqus tank damage occurred, including the fuel tank of the deformation, stress, strain distribution, etc., hoping to make th