The mathematical model of steady heat transfer analysis for orthotropic structure is established based on Element-Free Galerkin (EFG) method and the essential boundary conditions are enforced using penalty method. The reliability of heat transfer model and MATLAB programs have been verified through three engineering examples in practice. The effects of nodes distribution pattern, scaling factors, penalty factors and weight functions on the EFG temperature results of different orthotropic structures are evaluated. A comparison of the CPU computing time between EFG and FEM is also studied. By comparison with finite element temperature and temperature gradient, it is revealed that the temperature based on EFG has higher calculation precision for steady heat transfer problem, and the temperature is not affected by nodes distribution pattern. The rational values of scaling factors and penalty factors are provided respectively. In addition, the computational relative error increases with the decrease of the orthotropic factor during various weight functions, and the cubic spline and parabola weight functions are the preferred choices in the heat transfer analysis of the orthotropic structure.

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precision elementfree galerkin efg method computational relative error cpu computing time matlab programs cubic spline fem steady heat transfer analysis scaling factors penalty factors finite element temperature and temperature parabola weight functions nodes distribution essential boundary conditions orthotropic structures

Guo-Qiang Zhou, Shu-Guang Gong,Jian-Ping Zhang, Sheng Hu, Shu-Sen Wang,.Steady heat transfer analysis of orthotropic structure based on Element-Free Galerkin method. 121 (0),.

Guo-Qiang Zhou, et al."Steady heat transfer analysis of orthotropic structure based on Element-Free Galerkin method" 121

Guo-Qiang Zhou, Shu-Guang Gong,Jian-Ping Zhang, Sheng Hu, Shu-Sen Wang,"Steady heat transfer analysis of orthotropic structure based on Element-Free Galerkin method"