標題: Investigation of Multiply Connected Inverse Cauchy Problems by Efficient Weighted Collocation Method
作者: Yang, Judy P.
Lin, Qizheng
土木工程學系
Department of Civil Engineering
關鍵字: Inverse Cauchy problem;gradient reproducing kernel approximation;reproducing kernel approximation;strong form;collocation method
公開日期: 1-一月-2020
摘要: This work introduces an efficient weighted collocation method to solve inverse Cauchy problems. As it is known that the reproducing kernel approximation takes time to compute the second-order derivatives in the meshfree strong form method, the gradient approach alleviates such a drawback by approximating the first-order derivatives in a similar way to the primary unknown. In view of the overdetermined system derived from inverse Cauchy problems with incomplete boundary conditions, the weighted gradient reproducing kernel collocation method (G-RKCM) is further introduced in the analysis. The convergence of the met hod is first demonstrated by the simply connected inverse problems, in which the same set of source points and collocation points is adopted. Then, the multiply connected inverse problems are investigated to show that high accuracy of approximation can be reached. The sensitivity and stability of the method is tested through the disturbance added on both Neumann and Dirichlet boundary conditions. From the investigation of four benchmark problems, it is concluded that the weighted gradient reproducing kernel collocation method is more efficient than the reproducing kernel collocation method.
URI: http://dx.doi.org/10.1142/S175882512050012X
http://hdl.handle.net/11536/154130
ISSN: 1758-8251
DOI: 10.1142/S175882512050012X
期刊: INTERNATIONAL JOURNAL OF APPLIED MECHANICS
Volume: 12
Issue: 1
起始頁: 0
結束頁: 0
顯示於類別:期刊論文