Fig.1

Analysis process"

Fig.2

Steps of simulation modeling"

Table 1

Breakdown table of electrical connector performance"

Table 2

Analysis table of failure mechanism of electrical connector"

Table 3

Materials and properties of each unit"

Fig.3

Product temperature distribution under 25 ℃ environment"

Table 4

Response surface analysis factors"

Fig.4

Terminal wiring before experiment environment"

Fig.5

Terminals placed in the heat insulation box for experiment"

Table 5

Terminal contact resistance, maximum temperature rise, simulated temperature rise and relative error"

Table 6

Relative error of model before and after update"

Fig.6

Temperature rise response surface analysis optimization results"

Table 7

Change of contact resistance with the number of plug-ins  mΩ"

Fig.7

Change of contact resistance of five pairs of terminals"

Fig.8

Average contact resistance change"

Table 8

Degradation curve fitting result"

Fig.9

Fitting curve and actual mean value distribution of contact resistance"

Table 9

Parameter distribution"

Table 10

Inherent reliability at different ambient temperatures"

Fig.10

Temperature rise reliability varies with terminal radius mean and variance"

Fig.11

Temperature rise reliability varies with current mean and variance"

Fig.12

Temperature rise reliability varies with the mean and variance of contact resistance"

Fig.13

Temperature rise reliability varies with the mean and variance of conductor resistivity"

Fig.14

Influence of ambient temperature on temperature rise reliability"

Fig.15

Reliability changes with the number of plug-ins"