Determine the strain energy per unit volume (units of psi) and the strain energy per unit weight (units of in.) that can be stored in each of the materials listed in the accompanying table, assuming that the material is stressed to the proportional limit.

Transcribed Image Text:

Weight density (Ib/in.3) Modulus of Proportional limit (psi) 36,000 75,000 60,000 elasticity (ksi) Material Mild steel Tool steel Aluminum Rubber (soft) 0.284 0.284 0.0984 0.0405 30,000 30,000 10,500 0.300 300