The construction of wavelet finite element and its application

The two-dimensional wavelet finite element (WFE) is constructed, in which the scaling functions of Daubechies wavelets are adopted as trial functions. In order to overcome the integral difficulty caused by lack of the explicit Daubechies scaling function expression, a new and efficient integral method for stiffness and load matrices is presented. Then the bending characters of a thin plate are studied based on WFE. Numerical tests indicate that the WFE is highly accurate and effective. For engineering application, the internal temperature distribution of office paper used in office machines such as printers and copiers is analyzed by WFE. The results show that WFE has desirable calculation precision while dealing with singularity problems. (C) 2003 Elsevier B.V. All rights reserved.