9. The following data were obtained from a series of tests conducted on precracked specimens of thickness 1 mm. Crack length Critical load Critical displacement a(mm) P(kN) u(mm) 30.0 3.88 0.42 40.0 3.45 0.48 50.5 3.02 0.61 61.6 2.68 0.75 71.7 2.50 0.91 79.0 2.42 1.05 where P and u are the critical load and displacement at crack growth. The load- displacement record for all crack lengths is linearly elastic up to the critical point. Determine the critical value of the strain energy release rate G₁ = R from: (a) the load-displacement records, and (b) the compliance-crack length curve.
9. The following data were obtained from a series of tests conducted on precracked specimens of thickness 1 mm. Crack length Critical load Critical displacement a(mm) P(kN) u(mm) 30.0 3.88 0.42 40.0 3.45 0.48 50.5 3.02 0.61 61.6 2.68 0.75 71.7 2.50 0.91 79.0 2.42 1.05 where P and u are the critical load and displacement at crack growth. The load- displacement record for all crack lengths is linearly elastic up to the critical point. Determine the critical value of the strain energy release rate G₁ = R from: (a) the load-displacement records, and (b) the compliance-crack length curve.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:9.
The following data were obtained from a series of tests conducted on precracked
specimens of thickness 1 mm.
Crack length Critical load Critical displacement
a(mm)
P(kN)
u(mm)
30.0
3.88
0.42
40.0
3.45
0.48
50.5
3.02
0.61
61.6
2.68
0.75
71.7
2.50
0.91
79.0
2.42
1.05
where P and u are the critical load and displacement at crack growth. The load-
displacement record for all crack lengths is linearly elastic up to the critical point.
Determine the critical value of the strain energy release rate G₁ = R from: (a) the
load-displacement records, and (b) the compliance-crack length curve.
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