A boundary meshless method for dynamic coupled thermoelasticity problems. (December 2022)

• Record Type: Journal Article
• Authors: Chen, Zhikang; Sun, Linlin
• Is Part Of: Applied mathematics letters. Volume 134(2022)
• Publication Date: 2022-12
• Subjects: Meshless -- Boundary knot method -- Exponential window method -- Thermoelasticity; Applied mathematics -- Periodicals; 519.05
• DOI: 10.1016/j.aml.2022.108305
• Languages: English
• ISSNs: 0893-9659

Abstract

Abstract: This work develops the boundary knot method (BKM) for two-dimensional (2D) coupled thermoelasticity problems in the frequency domain. By taking the non-singular general solution satisfying the governing equations as the basis function, the BKM does not require domain discretization. Nevertheless, the non-singular solution for the considered problems is absent. The Helmholtz decomposition and eigen-analysis are introduced to firstly derive the non-singular general solution, and thus the BKM can be formulated in terms of the discretized boundary points. In the final, the exponential window method (EWM) in conjunction with the BKM is employed to perform the transient analysis. The accuracy and feasibility of the proposed method are presented via numerical examples.