Element-Free Galerkin Method Based on Block-Pulse Wavelets Integration for Solving Fourth-Order Obstacle Problem

Table 2

Observed maximum errors for Problem 2, using BPF (25).

Type of basis	Number of nodes	Max. absolute error
		Our method using BPF; 100 sets of block pulse functions	Central difference method [1]	Quartic spline method [2]	Cubic-spline method [4]	Using quadrature rule with 100 Gauss points
Constant	12	9.894𝐸−7	6.2𝐸−5	1.2𝐸−5	8.4𝐸−6	2.993𝐸−6
Constant	24	9.894𝐸−7	1.6𝐸−5	2.8𝐸−6	2.2𝐸−6	1.970𝐸−6