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Shock and Vibration
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Shock and Vibration
/
2015
/
Article
/
Tab 1
/
Research Article
Determining Effects of Wagon Mass and Vehicle Velocity on Vertical Vibrations of a Rail Vehicle Moving with a Constant Acceleration on a Bridge Using Experimental and Numerical Methods
Table 1
Comparing of 1 : 5 scaled roller rig approaches [
30
].
Scaling factors
Jaschinski
Pascal
Iwnicki
Jaschinski modified
length
5
5
5
5
time
√
5
5
1
√
5
velocity
√
5
1
5
√
5
acceleration
1
1/5
5
1
mass
125
125
125
75
force
125
25
625
75
density
1
1
1
0.6
elastic module
1
1
1
3
weight
125
125
125
75
stiffness
25
5
125
15
creep force
125
25
625
75
damper
25
√
5
25
125
25
√
5
torsion damper
625
125
3125
375
torsion stiffness
625
√
5
625
3125
625
√
5
inertia
3125
3125
3125
1875
friction
1
1
1
1