대한기계학회 2003년도 추계학술대회 논문집
Supporting Jig
Distributed Test Load
Concentrated Load by Actuator
5 Springs
CAR BODY CAR BODY
SIDE VIEW
Supporting beam 50-ton Actuator
FRONT VIEW
CAR BODY
Supporting beam 5 Springs
Carbody
P P
Test Specimen
H.S.M
Actuator DDC Servo Control Adaptive
Control Data Actuation Function Generator Limit Checking Digital I/O Signal Conditioning Readout Valve Driver
Hydraulic Pump
DIGITAL CONTROLLER AC
Controller DC Controller
Strain Amp.
Stroke Load
LVDT Strain Gage PC W/S
Flextestllm
User Interface Station Design Test Design Test Execution Data Storage Data Analysis Digital Oscilloscope Networking Ethemet
Test Specimen
H.S.M
Actuator DDC Servo Control Adaptive
Control Data Actuation Function Generator Limit Checking Digital I/O Signal Conditioning Readout Valve Driver
Hydraulic Pump
DIGITAL CONTROLLER AC
Controller DC Controller
Strain Amp.
Stroke Load
LVDT Strain Gage PC W/S
Flextestllm PC W/S Flextestllm
User Interface Station Design Test Design Test Execution Data Storage Data Analysis Digital Oscilloscope Networking Ethemet
Set-up of prototype aluminum carbody structure
Static load test
Mounting strain gages, LVDTs’, accelerometers Setting actuators and test
equipments
Measuring natural frequency of full loaded carbody
Pre-test for determination of exciting force
Fatigue load test up to 4×10
5cycles
Continuation of fatigue load test up to 2×10
6cycles
Investigation of fatigue crack initiation and propagation
Measuring accelerations Measuring stresses and
displacements
1st Door
LEFT SIDE
RIGHT SIDE
Window T/M 2nd Door 3rd Door
4th Door
LA2 (850,000 cycles, 110mm) LA1 (560,000 cycles, 770mm) LB1(560,000 cycles , 180mm
850,000 cycles,770mm ) LB2 (560,000 cycles, 120mm)
LB3 LB4 LD1 (850,000 cycles, 50mm) LC1 (560,000 cycles, 150mm
850,000 cycles, 250mm)
RA1(560,000 cycles, 350mm 850,000 cycles, 770mm) (560,000 cycles, 120mm)
(560,000 cycles, 120mm)
RB1(560,000 cycles, 70mm) RB2(850,000 cycles, 60mm)
RD1(850,000 cycles, 200mm) RC1(560,000 cycles, 90mm)
RE1(1,352,700 cycles, 50mm 2,200,000 cycles, 50mm)
RF1(1,730,110 cycles, 150mm)
LF1 (2,200,000 cycles, 10mm)
대한기계학회 2003년도 추계학술대회 논문집
0 0.1 0.2 0.3 0.4 0.5 0.6
0 0.2 0.4 0.6 0.8 1
Dis tance From End / Carbody Length
Str e ss R a nge / M e an Str ess
Static Tes t Dy namic Tes t
1 10 100 1000
1.0E+04 1.0E+05 1.0E+06 1.0E+07
Cycles to Failure
Stress Range in MPa
EAA(partial penetration) EAA(one sided fillet) LB3
LC1 LA1 RC1 LD1 RE1 RF1
4 5 6 7 8 9 10
u d e in Mpa .
Failure Criteria
Dynamic Test
Static Test
대한기계학회 2003년도 추계학술대회 논문집