http://reply.papertrans.cn/2/161/16055/16055-21.png
http://reply.papertrans.cn/2/161/16055/16055-22.png
Submitted on: 16 January 2004.
Revised on: 21 March 2004.
Accepted on: 01 May 2004.
___________________Journal of Computational Applied Mechanics
http://reply.papertrans.cn/2/161/16055/16055-24.png
Submitted on: 30 July 2006.
Revised on: 20 November 2006.
Accepted on: 11 December 2006.
___________________Journal of Computational Applied Mechanics
http://reply.papertrans.cn/2/161/16055/16055-26.png
http://reply.papertrans.cn/2/161/16055/16055-27.png
http://reply.papertrans.cn/2/161/16055/16055-28.png
Submitted on: 09 April 2011.
Revised on: 30 May 2011.
Accepted on: 10 June 2011.
___________________Journal of Computational Applied Mechanics
http://reply.papertrans.cn/2/161/16055/16055-30.png