A steel bar of 22 mm diameter and 8 em gage length was axially loaded in tension and the following load deformation diagram was obtained. Determine: a) The yield strength by 0.2% off-set method. b) Modulus of elasticity by initial tangent method. c) Modulus of elasticity by tangent method at 2/3 of the yield strength. d) Modulus of elasticity by secant method at 70% of ultimate strength. e) Strain in fracture. Answer: a) 6576.7 kgf/em² b) 2.3x10° kgf/em² c) 1.11x10° kgf/em? d)1.49 kgf/em² e)1.6%
A steel bar of 22 mm diameter and 8 em gage length was axially loaded in tension and the following load deformation diagram was obtained. Determine: a) The yield strength by 0.2% off-set method. b) Modulus of elasticity by initial tangent method. c) Modulus of elasticity by tangent method at 2/3 of the yield strength. d) Modulus of elasticity by secant method at 70% of ultimate strength. e) Strain in fracture. Answer: a) 6576.7 kgf/em² b) 2.3x10° kgf/em² c) 1.11x10° kgf/em? d)1.49 kgf/em² e)1.6%
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A steel bar of 22 mm diameter and 8 cm gage length was axially loaded in
tension and the following load deformation diagram was obtained. Determine:
a) The yield strength by 0.2% off-set method.
b) Modulus of elasticity by initial tangent method.
c) Modulus of elasticity by tangent method at 2/3 of the yield strength.
d) Modulus of elasticity by secant method at 70% of ultimate strength.
e) Strain in fracture.
Answer: a) 6576.7 kgf cm² b) 2.3x10° kgf/cm² e) 1.11x10° kgf/cm?
d)1.49 kgf/cm² e)1.6%
Bon)
30
25
20
15
10
DL (om
a018
0.032
0.040
0.004
0.000
O.112
0.120
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A steel bar of 22 mm diameter and 8 cm gage length was axially loaded in tension and the following load deformation diagram was obtained. Determine:
a) The yield strength by 0.2% off-set method.
b) Modulus of elasticity by initial tangent method.
c) Modulus of elasticity by tangent method at 2/3 of the yield strength.
d) Modulus of elasticity by secant method at 70% of ultimate strength.
e) Strain in fracture.
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