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A General Theory for Elastic Damage
TANG Xue-song1, JIANG Chi-ping1, ZHENG Jian-long2*
1. Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics;
2. Changsha Communications University, Dept. of Highway and Bridge Engineering

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Abstract�� On the strict basis of irreversible thermodynamics, a general theory for elastic damage is developed. The approximations and limitations of the classical stress-strain constitutive equation based on the strain equivalence hypothesis are argued theoretically. The relations and differences of the existing various definitions of damage (single scalar, double scalar, second rank and fourth rank tensor damage variables) are expounded for the first time. The theoretical rigor of continuum damage mechanics is improved.
Keywords�� continuum mechanics   irreversible process thermodynamics   constitutive relation   elastic damage   damage evolution equation.     
Received 1999-10-08;
Fund:

������Ȼ��ѧ����������Ŀ(19972005); ��ͨ���ص�Ƽ���Ŀ; ���տ�ѧ����������Ŀ(99G51022)

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��ѩ��, ����ƽ, ֣����.�������˵�һ������[J]  �������պ����ѧѧ��, 2001,V27(1): 69-72
TANG Xue-song, JIANG Chi-ping, ZHENG Jian-long.A General Theory for Elastic Damage[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2001,V27(1): 69-72
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