Analysis of special granular structures response on the external loading

This paper concerns problems related to complex response of Special Granular Structures (SGS) on applied external loading. Typical experimental results acquired from uniaxial compression tests are presented. For the most part influences of underpressure and strain rate are discussed. Universal dependencies between determined Young modulus values and underpressures and proof stresses vs. underpressures are introduced. Finally complex behavior of SGS is analyzed basing on experimentally obtained surfaces: E=f(V,p) and k=(V,p).