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�������պ����ѧѧ�� 2008, Vol. 34 Issue (12) :1369-1374    DOI:
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������1, �����1, ����ƽ2, κ����2, ͯ�DZ�2*
1. �������պ����ѧ ���տ�ѧ�빤��ѧԺ, ���� 100191;
2. �����ɻ���ҵ(����)�������ι�˾, ���� 710089
Numerical model for a commercial aircraft water landing
Hu Dayong1, Yang Jialing1, Wang Zanping2, Wei Jiaoyu2, Tong Yabin2*
1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Xi-an Aircraft Industry(group) Company Limited, Xi-an 710089,China

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Abstract�� Aircraft water impact crashworthiness must be considered for the aircraft used near or over the sea. The current crashworthiness criteria, design approaches and analysis methods have mainly focused on the ground impact conditions, without adequately accounting for fundamental differences associated with water crashes. This is because the crash dynamics in water impact condition is extremely complex with multi-physics interacting. To simplify the problem, an uncoupled method is proposed, using finite element simulation combined with corresponding experiments. A finite element model of reasonably simplified aircraft structure including the fuselage, wing and empennage is established by using MSC.PATRAN/MSC.DYTRAN code. The loading condition is transformed from the ditching test and thirteen dynamic load cases are considered in computation. Corresponding stress distributions for each case are predicted. It is shown that the strength of the skin on the bottom of fuselage will not be failed.
Keywords�� water landing   finite element method   aircraft   dynamics   strengthening   crashworthiness     
Received 2007-12-17;
About author: ������(1978-),��,���ɹ�����ʯ��,��ʿ��,hudayong@ase.buaa.edu.cn.
������, �����, ����ƽ, κ����, ͯ�DZ�.ij�ͷɻ�ˮ���Ƚ���ֵ��ģ��[J]  �������պ����ѧѧ��, 2008,V34(12): 1369-1374
Hu Dayong, Yang Jialing, Wang Zanping, Wei Jiaoyu, Tong Yabin.Numerical model for a commercial aircraft water landing[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(12): 1369-1374
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2008/V34/I12/1369
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