Abstract
We studied approximate analysis of mechanical properties for porous polypropylene plate considering inhomogeneous distribution of cells due to manufacturing process. In the analysis, porous plate was modeled on laminate plate theory by stacking different layers with uniform porosity. Tensile, compression and bending static tests were conducted to measure elastic modulus and plateau stress. Numerical results were confirmed to be valid, compared with experimental results. Inhomogeneous distribution of porosity was found to be important for mechanical behavior. We tried to predict behavior of the porous material subjected to impulsive compression according to time-temperature equivalent principle. The prediction agreed with experimental results of impact tests.
