The paper analyzes the problem of initial compaction a non-cohesive soil sample on example dry silty sand samples. Two different methodologies were used: I) dynamic - using split Hopkinson pressure bar and II) vibration vibrating shaker. A better result process was obtained for with an value 0.5 (small difference in both methods comparable results). also includes numerical analysis calibration ...

Split Hopkinson pressure bar (SHPB) testing has traditionally been carried out using metal bars. For testing low stiffness materials such as rubbers or low strength materials such as low density cellular solids considered primarily herein, there are many advantages to replacing the metal bars with polymer bars. An investigation of a number of aspects associated with the accuracy of SHPB testing...

Modified dynamic three-point-bending and compact shearing test configurations based on Hopkinson pressure bar (HPB) and crack detection gage (CDG) (Vishay Intertechnology, Inc.) were used for the determination of the dynamic mode I and mode II delamination-initiation toughness of a unidirectional graphite-fiber/epoxy composite made of P7051S-20Q-1000 prepregs (Toray Composites America). The tra...

netic energy in SHPB test, Davies and Hunter recommended an optimal length/ diameter ratio of specimen in order to provide minimal correction or error due to inertial effects as well as to minimize the problem due to interfacial friction^.^ Gong et al. used FFT technique to rehe Split Hopkinson Pressure Bar (SHPB), or Kolsky’s apparatus, has been widely used for the study of dynamic behaviors o...

Detailed knowledge of the dynamic viscoelastic properties of bone is required to understand the mechanisms of macroscopic bone fracture in humans, and other terrestrial mammals, during impact loading events (e.g. falls, vehicle accidents, etc.). While the dynamic response of bone has been studied for several decades, high-quality data remain limited, and it is only within the last decade that t...

The design of adhesively bonded connections for structural applications has recently become a major field research, with extensive in the automotive and aerospace industries. In these structures, joints are often subjected to important static dynamic loads, which require careful geometrical dimensioning material selection. performance analysis adhesive under conditions is made numerical modelin...