Abstract In order to study the mechanical properties of Nitrate Ester Plasticized Polyether (NEPE) propellant at high strain rates, impact tests NEPE were carried out by split Hopkinson bar, and stress-strain curves under different rates ( 1500s −1 -4500s ) obtained. The test results show that has obvious nonlinear elasticity rate sensitivity. microstructure was observed scanning electron micro...

• A new kerogen aggregate with Gaussian molecular weight distribution was established. The dynamic response of obtained under different strain rates. microscopic mechanism the plastic stress oscillation and fracture clarified. compressible hyper-viscoelastic constitutive model built to describe mechanical behaviour aggregate. As main organic component shale, has a direct impact on shale reservo...