Nonlinear Analysis for the Crack Control of SMA Smart Concrete Beam Based on a Bidirectional B-Spline QR Method

Table 5

The recovery situation of maximum crack width with different thickness of concrete cover.

Temperature of SMA wires (°C)	Maximum crack width (mm)			Recovery rate of maximum crack width (%)
	20	0.2098	0.2848	0.3700	0.00	0.00	0.00
40	0.2090	0.2838	0.3687	0.39	0.37	0.34
60	0.1940	0.2625	0.3403	7.54	7.82	8.04
80	0.1851	0.2501	0.3234	11.77	12.19	12.58
100	0.1795	0.2422	0.3129	14.44	14.97	15.43
120	0.1779	0.2399	0.3098	15.22	15.78	16.26

Concrete covers :  mm,  mm, and  mm.