Calculate the elastic buckling collapse stress (the compressive strength), σ∗el, for an open-cell polystyrene foam with a relative density of 0.1. (Es for polystyrene = 3.5GPa). Recall that C2=0.05. Give the results in MPa.
σ∗el (in MPa):
The energy absorbed per unit volume in deforming a material is equal to the area under the stress strain curve. If the polystyrene foam has a flat stress plateau and densifies at a strain of 0.85, how much energy can it absorb per unit volume? Give your result in MJ/m3.
energy absorbed per unit volume (in MJ/m3):
2 answers
stress=1.75
stress=1.75 MPa
E=1.4875 MJ/m3
E=1.4875 MJ/m3
1 answer