Page 70 - 捷運技術 第35期

62 Tomonori Umebayashi Toshinori Kimura Hiroyuki Morimoto 陳立島 CRASHWORTHINESS ANALYSIS OF CK371

δ=0mm δ=50mm δ=100mm δ=150mm

δ=200mm δ=250mm δ=300mm δ=350mm
Deformation （model １e）
2400
2000 model １e
1600
Force [KN] 1200 800
400
0 0 50 100 150 200 250 300 350 400
Displacement [mm]

0.5 0.4 model １e

Energy [ＭＪ] 0.3 0.2

0.1
0 0 50 100 150 200 250 300 350 400
Displacement [mm]

Fig.2-2-4 Analysis result of end fuse element

2-2) Test result

The cab and non-cab end fuse elements were tested respectively to confirm their crush
behavior. Original and crushed shape of cab end are shown in Fig. 2-2-5.

Original（unloaded） Crushed（loaded）

Fig. 2-2-5 Cab end fuse element crush test

2,000 One Mechanical Fuse Buckling Strength(Cab End) Fc=1577.63 kN
Fig.2-2-6 shows that the crush deformation 1,800 One Fuse Allowable strength: 1692.25kN(=6,769kN/4)
versus reaction force during crush test, together 1,600 Fc=1680.6kN at 240mm mean displacement
1,400
with the result of analysis. Analysis and test 1,200
results agree closely until 140 mm displacement. Load (kN) 1,000 Test result
800
600 Allowable Strength
400 Fuse length = 240mm Analysis result
200
0
0 50 100 150 200 250 300
Displacement (mm)

Fig. 2-2-6 Results of analysis and test