8/14/2019 Whole Assembly Flutter Analysis of LP Turbine Blade

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0.68

0.63

0.58

0.53

0.490.44

0.39

0.34

0.29

0.34

0.25

0.20

0.06

0.150.72

0.68

0.630.58

0.530.490.44

0.39

0.34

0.68

0.68

0.63

0.63

0.630.58

2.72

2.77

2.72

2.66

2.55

2.44

2.34

2.28

2.23

2.23

2.1

7

2.72

2.662.61

2.552.50

2.39

2.28

2.23

2.12 2.72

2.83

2.88

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0 0.05 0.1 0.15 0.2 0.25 0.3 0.35

5

0

5x 10

5

Time (seconds)

Modaldisplacementm/sqrt(kg)

8 ND (99 % speed), backward travelling wave

0 0.05 0.1 0.15 0.2 0.25 0.3 0.354

2

0

2

4x 10

5

Time (seconds)

Modaldisplacementm/sqrt(kg)

8 ND (99 % speed), forward travelling wave

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40 30 20 10 0 10 20 30 400.2

0

0.2

0.4

0.6

0.8

1

1.2

Nodal diameter

Damping%

88% speed

94% speed

99% speed

-0.0001

-8e-05

-6e-05

-4e-05

-2e-05

0

2e-05

4e-05

6e-05

8e-05

0.0001

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35

TiptrailingedgeDisplacment(m)

Time (seconds)