Table 8.

The ductility coefficient comparison.

models	Loading direction	yield point		Ultimate displacement (mm)	${\mu }_u$
		load capacity (kN)	displacement (vector) (mm)
0.3	forward	135.99	7.32	46.60	4.51
	negative direction	−129.41	−6.63	−47.70	6.61
0.4	forward	137.52	6.91	48.96	4.17
	negative direction	−135.00	−6.91	−45.49	4.51
0.5	forward	154.41	6.48	47.12	3.90
	negative direction	142.49	5.43	−48.51	5.23
0.6	forward	162.86	6.70	43.59	3.63
	negative direction	150.63	6.01	−46.90	4.08
0.7	forward	184.38	6.86	48.71	3.11
	negative direction	176.80	5.92	−48.31	3.31
0.8	negative direction	173.84	6.34	46.34	2.88
	negative direction	135.99	7.32	−46.64	3.69