Investigation Progresses and Applications of Fractional Derivative Model in Geotechnical Engineering

Table 3

Parameters of particle swarm fractional order derivative Nishihara model [55].

Soil	Temperature	Loading coefficient	σ					Correlation coefficient
Clay	−5	0.3	1.05	0.06	—	0.1116	—	0.9869
		0.5	1.75	0.28	—	0.72	—	0.9990
	−10	0.3	1.5	0.24	—	0.0068		0.9943
		0.5	2.5	1.16		0.0198	—	0.9947
	−15	0.3	2.1	0.65	—	0.3119	—	0.9966
		0.5	3.5	0.18	—	0.3901	—	0.9992
	−5	0.7	2.45	0.000646	0.000631	1.0494	2.37	0.9919
	−10	0.7	3.5	0.11854	1.0638	0.00811	3.25	0.9873
	−15	0.7	4.9	0.01117	0.00548	1.139	4.74	0.9927