Li Ying-lei, Ye Xiang-ping, Zhang Zu-gen, Li Ying-hua, Cai Ling-cang, Wu Qiang, Dai Cheng-da. A design of passive confined SHPB experiment for materials with low bulk modulus[J]. Explosion And Shock Waves, 2014, 34(6): 667-672. doi: 10.11883/1001-1455(2014)06-0667-06
Citation:
Li Ying-lei, Ye Xiang-ping, Zhang Zu-gen, Li Ying-hua, Cai Ling-cang, Wu Qiang, Dai Cheng-da. A design of passive confined SHPB experiment for materials with low bulk modulus[J]. Explosion And Shock Waves, 2014, 34(6): 667-672. doi: 10.11883/1001-1455(2014)06-0667-06
Li Ying-lei, Ye Xiang-ping, Zhang Zu-gen, Li Ying-hua, Cai Ling-cang, Wu Qiang, Dai Cheng-da. A design of passive confined SHPB experiment for materials with low bulk modulus[J]. Explosion And Shock Waves, 2014, 34(6): 667-672. doi: 10.11883/1001-1455(2014)06-0667-06
Citation:
Li Ying-lei, Ye Xiang-ping, Zhang Zu-gen, Li Ying-hua, Cai Ling-cang, Wu Qiang, Dai Cheng-da. A design of passive confined SHPB experiment for materials with low bulk modulus[J]. Explosion And Shock Waves, 2014, 34(6): 667-672. doi: 10.11883/1001-1455(2014)06-0667-06
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China
Based on dynamic triaxial passive loading techniques, a new passive confined SHPB experiment technique was designed for measuring the responses of pressure and volume strain of materials with bulk modulus of giga pascal or less.In the experiment design, the dimensions of the specimens, encapsulated pads and confinement tube were determined as well as their matching.And the upper limit of pressure load was given.The pressure result from this design was validated by the deviation of equivalent pressure of LC4 aluminum alloy measured by the passive confined SHPB experiment and SHPB experiment.The volume strain result from this design is approximately equal to the axial strain measured by the SHPB experiment.And based on the analysis of experiment and numerical simulation, the radial strain can be omitted compared with the volume strain.Cerium was tested by the designed passive confined SHPB setup.The result shows the entire response of pressure and volume strain during the phase transition of gamma to alpha.The variety of volume strain during phase transition and the pressures of the beginning and ending of phase transition are similar to those by hydrostatic-pressure experiments.So the designed passive confined SHPB technique is feasible for measuring the pressure-volume strain relation of materials with low bulk modulus.
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