Infinite Element Static-Dynamic Unified Artificial Boundary

Table 2

Numerical displacements of different boundary methods and their relative errors.

Observation points	O		B		C
	(m)	Error (%)	(m)	Error (%)	(m)	Error (%)
Theory solution	−0.2693	0.00	−0.0292	0.00	−0.0147	0.00
Numerical solution of Method 1	−0.2737	1.63	−0.0176	−39.73	0.0000	Boundary effect
Numerical solution of Method 2	−0.2760	2.45	−0.0253	−13.36	−0.0106	−27.89
Numerical solution of Method 3	−0.2696	0.11	−0.0295	1.03	−0.0149	1.36
Numerical solution of Method 4	−0.2668	−0.92	−0.0318	8.90	−0.0134	−8.84