Characteristics of the Differential Quadrature Method and Its Improvement

Table 1

Computational results of the displacement ( = 60 s).

= 60 s
Exact solution		2.264386552	5.469005157
s = 5; h = 1s	Traditional DQM-Chebyshev	2.253975383	5.491424542
	Improved DQM-Chebyshev	2.264406270	5.468965760
	Traditional DQM-Chebyshev-Gauss-Lobatto	2.276613635	5.439926064
	Improved DQM-Chebyshev-Gauss-Lobatto	2.264406270	5.468965760
	Traditional DQM-Uniform	2.342513616	5.278336836
	Improved DQM-Uniform	2.264406270	5.468965760
s = 10; h = 2s	Traditional DQM-Chebyshev	2.264383332	5.469011768
	Improved DQM-Chebyshev	2.264386552	5.469005157
	Traditional DQM-Chebyshev-Gauss-Lobatto	2.264399479	5.468978613
	Improved DQM-Chebyshev-Gauss-Lobatto	2.264386552	5.469005157
	Traditional DQM-Uniform	2.265087814	5.467565205
	Improved DQM-Uniform	2.264386561	5.469005173