叶片预应力的确定

叶片预应力的确定

片号k

1

2

3

4

5

6

7

8

9

10

11

12

13

预应力

σ0k/MPa

-296.35

-222.26

-168.75

-107.02

-35.37

-29.59

85.85

136.42

184.24

210.99

232.55

232.55

232.55

片厚

hk/mm

9

8

8

8

8

8

6.5

6.5

6.5

6.5

6.5

6.5

6.5

81

64

64

64

64

64

42.25

42.25

42.25

42.25

42.25

42.25

42.25

-24004.4

-14224.6

-10800

-6849.3

-2263.7

1893.7

3627.2

5763.7

7784.1

8914.3

9825.2

9825.2

9825.2

=-24004.4-14224.6-10800-6849.3-2263.7+1893.7+3627.2+5763.7+7784.1+8914.3+3×9825.2=-683.4

按规定=0,相对误差=1.12%<5%,在允许范围内