Bayesian Uncertainty Identification of Model Parameters for the Jointed Structures with Nonlinearity

Table 4

Identification errors of the epistemic uncertain parameters and hyperparameters.

Parameter	True value	Posterior mean		Highest posterior density estimation
		Value	Relative error (%)	Value	Relative error (%)
a	15	14.86	−0.93	14.88	−0.77
b	−250	−248.74	−0.51	−248.79	−0.48
μ2	2000	2008.28	0.41	2007.79	0.39
σ2	30	33.93	13.10	31.90	6.34
d	2	2.22	11.14	2.07	3.30
e	20	21.05	5.24	20.69	3.43
μc	2000	2003.44	0.17	2003.75	0.19
σc	40	39.36	−1.60	38.00	−4.99