Infinite Element Static-Dynamic Unified Artificial Boundary

Table 4

Displacement maximums of different boundary methods and their relative errors in the Z direction.

Observation point	O		B		C
	(m)	Error (%)	(m)	Error (%)	(m)	Error (%)
Theory resolution	2.000	0.00	1.000	0.00	1.000	0.00
Numerical solution of Method 1	1.988	−0.6	0.995	−0.5	0.996	−0.4
Numerical solution of Method 2	1.988	−0.6	0.955	−0.5	0.955	−0.5
Numerical solution of Method 3	1.990	−0.5	0.993	–0.7	0.997	−0.3