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�������պ����ѧѧ�� 2009, Vol. 35 Issue (2) :227-230    DOI:
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����ˮ1, Punit Bandi2, John E. Renaud2*
1. �������պ����ѧ ��е���̼��Զ���ѧԺ, ���� 100191;
2. Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556-5637
Method of multi-domain topology optimization for continuum structures
Guo Lianshui1, Punit Bandi2, John E. Renaud2*
1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556-5637

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ժҪ ��Դ���η����Խṹ�����Ż�����,����˻��ڻ��ϸ���Զ���(HCA, Hybrid Cellular Automata)��ռ���������ṹ�����Ż�����;�����ܶȷ�,�����˵�Ԫ����ܶȱ�ʾ�IJ��ϵ�-����ģ��;�Ե�Ԫ����ܶȺ�Ӧ������Ϊϸ���Զ���(CA,Cellular Automata)��״̬��Ϣ,����CA�ֲ����ƹ���,�޸�����ܶ�,����ʵ�ָ���ƿռ���Ӧ���ܾ��ȷֲ�;����˶�ռ��������Ż�HCA�㷨,��ȡ�������ͬʱ����Ż�����,������������,����˶�ռ����Ż������㷨�����ȶ�������;���,���������ո˽ṹ������֧�ŵ�������ƿռ�Ϊ��,ʩ�Ӵ���ζ�̬�غ�����,������Ķ�ռ�ṹ�Ż��㷨��������֤,�Ż���ṹ��Ч�ؽ�������ײ��������ֵ��54��,����˽ṹ��ȫ��.
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Punit Bandi
John E. Renaud
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Abstract�� To solve the problem of continuum-based structural topology optimization under large deformation loading, the hybrid cellular automata (HCA) paradigm for multi-domain topology optimization technique was proposed, a relative density-based material parameterization was developed to model both elastic and plastic material behavior. The state of each cellular automata (CA) was defined by the density and strain energy density, and the uniform strain energy distribution of each design domain was realized by modification the relative density in accordance with CA local control rules. The multi-domain optimization HCA algorithm and convergence strategies were also discussed, these strategies include the simultaneous design of multiple, coupled components and converged individually. An example of bumper structure was presented to demonstrate the results of the multi-domain HCA algorithm, the bumper generated by the HCA algorithm for reduce the peak of reaction force 54% at a suitable sacrifice of stiffness.
Keywords�� structure design   topology optimization   convergence   multi-domain optimization     
Received 2008-07-20;
About author: ����ˮ(1967-),��,���չ����,������,lsguo@buaa.edu.cn.
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����ˮ,Punit Bandi, John E. Renaud.һ�ִ���ζ�ռ���������ṹ�����Ż�����[J]  �������պ����ѧѧ��, 2009,V35(2): 227-230
Guo Lianshui, Punit Bandi,John E. Renaud.Method of multi-domain topology optimization for continuum structures[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(2): 227-230
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