TY - EJOU
AU - Wang, Y.M.
AU - Wu, Q.
TI - Construction of Operator-Orthogonal Wavelet-Based Elements for Adaptive Analysis of Thin Plate Bending Problems
T2 - Computer Modeling in Engineering \& Sciences
PY - 2013
VL - 93
IS - 1
SN - 1526-1506
AB - A new kind of operator-orthogonal wavelet-based element is constructed based on the lifting scheme for adaptive analysis of thin plate bending problems. The operators of rectangular and skew thin plate bending problems and the sufficient condition for the operator-orthogonality of multilevel stiffness matrix are derived in the multiresolution finite element space. A new type of operator-orthogonal wavelets for thin plate bending problems is custom designed with high vanishing moments to be orthogonal with the scaling functions with respect to the operators of the problems, which ensures the independent solution of the problems in each scale. An adaptive operator-orthogonal wavelet method is proposed to approximate the exact solution of engineering problems by directly adding wavelets into the local domains until the relative error estimation satisfies the accuracy requirement. Numerical examples demonstrate that the operator-orthogonal method is an accurate and efficient method for bending analysis of thin plate.
KW - operator-orthogonal wavelet
KW - thin plate
KW - multiresolution analysis
KW - lifting scheme
DO - 10.3970/cmes.2013.093.017