Search Results

The energy dissipation behavior of foams depending on changes of loading rate input has been investigated and simulated to provide and guide a safe car interior design for occupant protection. However, all used foam models obtained from experiments at a specific loading rate could not represent general mechanical behavior of foam for various loading rates. In this study, a porous elastic theory was applied to investigate the effect of fluid phase on apparent rate dependent behavior in the elastic range of an open-cell foam. The porous elastic parameters of a polyurethane foam filled with air and liquid were measured and estimated using a new experimental method and reported data. Then, the porous elastic behavior of the foam in a uniaxial stress condition was simulated using the porous elastic parameters for various loading rates.