Problem 8054. Stress-Strain Properties - 7

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The toughness of a material is technically defined as the plastic strain energy absorbed by the material (the olive region in the figure below). Practically speaking, it's a measure of how much deformation a material can undergo (or energy it can absorb) before failure.<img src = "http://www.pt.ntu.edu.tw/hmchai/Biomechanics/BMmeasure/StressMeasure.files/StressStrainCurve.jpg">Write a function to calculate the toughness of a material—the absorbed strain energy minus the resilience. This can be accomplished by combining the code written in <a href = "https://www.mathworks.com/matlabcentral/cody/problems/8049-stress-strain-properties-2">problem 2</a> (resilience) and <a href = "http://www.mathworks.com/matlabcentral/cody/problems/8053-stress-strain-properties-6">problem 6</a> (absorbed strain energy). Also, return the fraction of absorbed strain energy that the toughness represents.Previous problem: 6 - <a href = "http://www.mathworks.com/matlabcentral/cody/problems/8053-stress-strain-properties-6">absorbed strain energy</a>. Next problem: 8 - <a href = "http://www.mathworks.com/matlabcentral/cody/problems/8055-stress-strain-properties-8">material properties list</a>.

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absorbed deformation ductile energy material property resilience strain strain energy strength stress test toughness yield

Problem 8054. Stress-Strain Properties - 7

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