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�������պ����ѧѧ�� 2008, Vol. 34 Issue (09) :991-994    DOI:
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1. �������պ����ѧ ��е���̼��Զ���ѧԺ, ���� 100191;
2. �����ɻ�����о���, ���� 110035
Bionic design of column structure of machine tool for high specific stiffness
Yang Yongbin1, Chen Wuyi1, Zhao Dahai2*
1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Shenyang Aircraft Design & Research Institute, Shenyang 110035, China

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Abstract�� Improving the specific stiffness of moving structure is important for the improvement of the machining accuracy and dynamic performance of high speed machine tools. Based on structural bionic theory, through study on the contribution of biologic skeleton to organism stiffness and the concept that biologic skeleton shows the best load path of organism, the column-s inner structure was redesigned as skeleton to improve the specific stiffness. The static, modal, and transient analyses of original column and bionic column were carried out, and the results are satisfying. The FEA results show that through structural bionic design the column-s mass was decreased, the specific stiffness structural efficiency and the natural frequency were improved, the transient displacement was decreased, and the stability of bionic column was better than that of original column. Through structural bionic design the static and dynamic character of column was ameliorated.
Keywords�� specific stiffness   structural bionics   column   biologic skeleton   load path     
Received 2007-07-30;
Fund:

������Ȼ��ѧ����������Ŀ(50575008); ���տ�ѧ����������Ŀ(05B01004)

About author: ������(1983-),��,ɽ��Ϋ����,˶ʿ��,yangyongbin_1983@126.com.
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������,����һ,�Դ�.���������߱ȸնȽṹ�������[J]  �������պ����ѧѧ��, 2008,V34(09): 991-994
Yang Yongbin, Chen Wuyi, Zhao Dahai.Bionic design of column structure of machine tool for high specific stiffness[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(09): 991-994
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2008/V34/I09/991
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