. Author manuscript; available in PMC: 2020 Sep 15.

Published in final edited form as: Comput Mech. 2019 Feb 6;64:717–739. doi: 10.1007/s00466-019-01678-3

Table 8:

The 1-norm condition number estimates and five maximum and minimum eigenvalues (λ_i) of the preconditioned local matrices $A_{f}^{*}$ , K*, L* without resistance BC and $K_{s}^{*}$ . The 5th maximum eigenvalue of local $A_{f}^{*}$ is complex, with imaginary part of −3.257 × 10⁻⁵.

$A_{f}^{*}$ : Condition number=645
λ_i	1^st	2^nd	3^rd	4^th	5^th
Max	2.271	2.248	2.248	2.247	2.244
Min(×10⁻²)	2.557	3.558	4.623	5.183	5.795
K*: Condition number=14
λ_i	1^st	2^nd	3^rd	4^th	5^th
Max	2.249	2.248	2.248	2.244	2.244
Min	0.579	0.580	0.582	0.582	0.583
L*: Condition number=1.662 × 10¹⁸
λ_i	1^st	2^nd	3^rd	4^th	5^th
Max	2.290	2.224	2.216	2.213	2.201
Min(×10⁻²)	0.000	0.200	0.555	0.798	1.019
$K_{s}^{*}$ : Condition number=1.517×10⁴
λ_i	1^st	2^nd	2^rd	4^th	5^th
Max	3.567	3.556	3.214	3.181	3.161
Min(×10⁻³)	1.173	1.193	1.205	1.222	1.238