Completeness of the system of eigenvectors of off-diagonal operator matrices and its applications in elasticity theory

doi:10.1088/1674-1056/19/12/120201

Abstract This paper deals with off-diagonal operator matrices and their applications in elasticity theory. Two kinds of completeness of the system of eigenvectors are proven, in terms of those of the compositions of two block operators in the off-diagonal operator matrices. Using these results, the double eigenfunction expansion method for solving upper triangular matrix differential systems is proposed. Moreover, we apply the method to the two-dimensional elasticity problem and the problem of bending of rectangular thin plates on elastic foundation.

Keywords: off-diagonal operator matrix completeness double eigenfunction expansion method elasticity theory

Received: 27 January 2010
Revised: 15 March 2010
Accepted manuscript online:

PACS:	0200
	0340D
	0420J
	4630C

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10962004 and 11061019), the Doctoral Foundation of Inner Mongolia (Grant Nos. 2009BS0101 and 2010MS0110), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20070126002), and the Chunhui Program of the Ministry of Education of China (Grant No. Z2009-1-01010).

Cite this article:

Huang Jun-Jie(黄俊杰),Alatancang(阿拉坦仓), and Wang Hua(王华) Completeness of the system of eigenvectors of off-diagonal operator matrices and its applications in elasticity theory 2010 Chin. Phys. B 19 120201

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Completeness of the system of eigenvectors of off-diagonal operator matrices and its applications in elasticity theory

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