1. The problem statement, all variables and given/known data 1.The maximum energy (per unit volume) that can be absorbed by the steel alloy without sustaining permanent deformation is _______ lb/in^2 1.4. The maximum energy (per unit volume) that can be absorbed bythe steel prior to fracturing is _______ kip/in^2. . 2. Relevant equations 3. The attempt at a solution If I remember correctly, stored energy is the area under the graph. Since I don't know the equation I will work with estimates. First, I used the 0.2 % offset method to find the Yield strength of the material and I found the yield strength to be about 65 ksi. The area under the straight line is (1/2)(.002)(60E3)=60 I estimate the rest of the area as a rectangle: (0.002)(60)=120 which gives a grand total of 180 lb/in^2. Yet the solution, which is not worked out, claims that the energy is only the first part, namely 60 lb/in^2. I thought a material wouldn't be deformed before it gets to the point of yield strength, and in the previous step I found the yield strength correctly. I'm thinking they did something wrong because the solution even goes on to say "Modulus of resilience"=60PSI. 1.4 should just be the same thing, total area under curve?