Fig.1

Geometry of specimen"

Fig.2

MMS-200 thermal simulation machine"

Table 1

Scheme of thermal pre-tension test"

Fig.3

Thermal pre-tensile test procedure"

Fig.4

Results of thermal pre-tensile test"

Fig.5

Results of tensile test at room temperature"

Table 2

Cross-sectional area of specimen afterthermal pre-tension test"

Fig.6

Stress-strain curve of tensile testat room temperature"

Fig.7

Relationship between forming strain and failure strain, ultimate stress and yield stress"

Table 3

Constants of damage-coupling pre-forming constitutive model"

Fig.8

Comparison of stress-strain curves betweenexperiment (solid curve) andcomputation(symbol)"

Fig.9

Comparison of simulation and experiment of thermal tensile with forming strain 0.5"

Fig.10

Comparison of simulation and DICtest result with forming strain 0.5"

Fig.11

Comparison of force-displacement curves with different forming strain between experimental(solid curve) and numerical(symbol) results"

Fig.12

Section size of side-door impact beam"

Fig.13

Distribution thickness and damage in cross-section of side-door impact beam"

Fig.14

Three-point bending simulation model"

Fig.15

Effect of thickness and damage on load- displacement and load reduction ratio"

Table 4

Ultimate bending load and failure displacement of side-door impact beam"

Fig.16

Effect of thickness and damage on energy-displacement and energy reduction ratio"