Optimal Design of the Sealing Structure of a Hydraulic Cylinder on the Basis of a Surrogate Model

Table 4

The mean values and the mean square error in case of the maximum contact pressure after storage and aging of the sealed structure.

Time of usage	Shortly after sealing	10 years	20 years	25 years	30 years
Mean of response (MPa)	4.59	4.57	4.38	3.72	3.64
Mean square error of response (MPa)	0.94	0.88	0.84	0.72	0.72