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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
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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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.
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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