A wood specimen was prepared with actual dimensions of 25 mm * 25 mm * 150 mm and grain parallel to its length. Displacement was measured over a 100 mm gauge length. The specimen was subjected to compression parallel to the grain to failure. The load-deformation results are as shown in Table P10.24. TABLE P10.23 Deflection Load (N) (10 3 mm) 445 709 890 1412 1335 2113 1779 2825 2224 3556 2669 4234 3114 4935 3559 5644 4003 6353 4448 6995 4893 7996 5338 9131 5783 10287 6228 11902 (failure) TABLE P10.2 4 Load (N) Displacement (mm) 31 0.30 45 1.73 387 4.17 2358 4.57 7584 5.28 12740 5.99 16859 6.81 20489 7.62 23745 8.23 22757 9.14 19875 9.75 19265 10.5 a. Using a computer spreadsheet program, plot the stress-strain relationship. b. Calculate the modulus of elasticity. c. What is the failure stress?
A wood specimen was prepared with actual dimensions of 25 mm * 25 mm * 150 mm and grain parallel to its length. Displacement was measured over a 100 mm gauge length. The specimen was subjected to compression parallel to the grain to failure. The load-deformation results are as shown in Table P10.24. TABLE P10.23 Deflection Load (N) (10 3 mm) 445 709 890 1412 1335 2113 1779 2825 2224 3556 2669 4234 3114 4935 3559 5644 4003 6353 4448 6995 4893 7996 5338 9131 5783 10287 6228 11902 (failure) TABLE P10.2 4 Load (N) Displacement (mm) 31 0.30 45 1.73 387 4.17 2358 4.57 7584 5.28 12740 5.99 16859 6.81 20489 7.62 23745 8.23 22757 9.14 19875 9.75 19265 10.5 a. Using a computer spreadsheet program, plot the stress-strain relationship. b. Calculate the modulus of elasticity. c. What is the failure stress?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Transcribed Image Text:A wood specimen was prepared with actual dimensions of 25 mm * 25 mm *
150 mm and grain parallel to its length. Displacement was measured over a
100 mm gauge length. The specimen was subjected to compression parallel to
the grain to failure. The load-deformation results are as shown in Table P10.24.
TABLE P10.23
Deflection
Load (N)
(10 3 mm)
445
709
890
1412
1335
2113
1779
2825
2224
3556
2669
4234
3114
4935
3559
5644
4003
6353
4448
6995
4893
7996
5338
9131
5783
10287
6228
11902 (failure)
TABLE P10.2 4
Load (N)
Displacement (mm)
31
0.30
45
1.73
387
4.17
2358
4.57
7584
5.28
12740
5.99
16859
6.81
20489
7.62
23745
8.23
22757
9.14
19875
9.75
19265
10.5
a. Using a computer spreadsheet program, plot the stress-strain relationship.
b. Calculate the modulus of elasticity.
c. What is the failure stress?
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