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�������պ����ѧѧ�� 2012, Vol. Issue (2) :268-272    DOI:
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Optimization of non-local impedance parameters of viscoelastic materials
Fan Zhenzhen, Wang Tongqing, Yang Mingsui*
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ ��Է���ճ���Բ��ϵĸ�����ɢ�����������һ�����õ�Ч�Ǿ����迹��������ģ�ͼ���������迹����ķ���.���Է���ճ���Բ��ϵ�����Ϊ��,����ȫ�������ƶ������㷨(GCMMA, Globally Convergent Method of Moving Asymptotes)�ԷǾ������迹����ģ�͵IJ����������Ż�,ʹ����ɢ���������ʹ������Ԫ�õ��Ľ��һ��.�о�����:��Ч�Ǿ����迹��������ģ�Ϳ���Ӧ���ڱ������ճ���Բ���������ɢ�����ֵ����,Ϊ�о�DZͧ�ȸ���ˮ��Ŀ�����ɢ���ṩ����Ч��;��.
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Abstract�� The context was devoted to the construction of a basic algebraic model for calculating non-local acoustic impedance matrix about acoustic scattering problem. A sphere laid by a certain kind of viscoelastic material was waken for example. The globally convergent method of moving asymptotes (GCMMA) was applied to optimize the parameters of the non-local acoustic impedance model and was verified. The results show that the basic algebraic model can be used to calculate the surface non-local acoustic impedance of the sphere laid viscoelastic materials. This conclusion will provide an effective research method for studying acoustic scattering of other underwater targets laid viscoelastic materials.
Keywords�� non-local acoustic impedance   viscoelastic   globally convergent method of moving asymptotes(GCMMA)     
Received 2010-10-13;
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������, ��ͬ��, ������.ճ���Բ��ϷǾ������迹ģ�ͼ������Ż�[J]  �������պ����ѧѧ��, 2012,V(2): 268-272
Fan Zhenzhen, Wang Tongqing, Yang Mingsui.Optimization of non-local impedance parameters of viscoelastic materials[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2012,V(2): 268-272
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2012/V/I2/268
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