Low-density foams

The low-density foam material model:

  • is intended for low-density, highly compressible elastomeric foams with significant rate sensitive behavior (such as polyurethane foam);

  • requires the direct specification of uniaxial stress-strain curves at different strain rates for both tension and compression;

  • optionally allows the specification of lateral strain data to include Poisson effects;

  • allows for the specification of optional unloading stress-strain curves for better representation of the hysteretic behavior and energy absorption during cyclic loading; and

  • requires that geometric nonlinearity be accounted for during the analysis step (see Defining an analysis and General and perturbation procedures), since it is intended for finite-strain applications.

The following topics are discussed:

Related Topics
About the material library
Elastic behavior
In Other Guides
Creating a low-density foam material model