Fig.1

Simulation approach of storage life of missile products"

Fig.2

Modeling process of product performance model"

Table 1

Typical type of performance models"

Table 2

Typical of surrogate models"

Fig.3

Kriging surrognate model construction process"

Table 3

Typical acceleration models"

Fig.4

Principle of basic product performance degradation modeling"

Fig.5

Fusion modeling process of performance and degradation laws formissile products"

Fig.6

Assessment process of missile product storage life"

Fig.7

Schematic diagram of load installation position"

Table 4

Summary of load-bearing information for cabin body"

Fig.8

Creep test data of 2A12-T4 aluminum alloy"

Table 5

Material properties of aluminum alloy"

Fig.9

Finite element model of cabin body"

Fig.10

Schematic diagram of boundary constraint and environmental loads of cabin body"

Fig.11

Cloud map of equivalent creep and deformation distribution of cabin body after 20 years storage"

Table 6

Summary of sensitivity analysis parameters"

Fig.12

Sensitivity of design parameters to maximum deformation ofcabin body"

Fig.13

Consistency analysis between creep model simulation and surrogate model prediction"

Table 7

R2 of different surrogate models"

Fig.14

Response surface of maximum deformation and sensitive design parameters for cabin body"

Fig.15

Change in maximum deformation of cabin body with storage duration"

Table 8

Summary of random variable distribution characteristics"

Fig.16

Probability density distribution of cabin body deformation at different storage time"

Table 9

Summary of distribution characteristics of maximum deformationfor cabin body"

Fig.17

Variation curve of cabin body structural reliability with storage life"