S1 values differ between versions of Design and CompositePro

[dean.rose]

I am a CompositePro 3 user. The S1 and density values are similar but different than the previous CompositePro.

[dean.rose · Accepted solution]

Simulation Composite Design 2014 does have slightly different values. The values are different because of the micromechanics model used. This micromechanics model utilizes a detailed finite element model of a fiber/matrix unit cell that features a uniform hexagonal distribution of parallel fibers embedded in a matrix material. The model discretization will yield a slightly lower fiber volume being used in the density calculation.

The answers will be different, but more accurate than before because of the robustness of our solution method. For a more detailed explanation, see section 4.2 of the user’s guide.