Abstract
The incident wave and transmission wave varying with the time have been obtained by SHPB experiment. The relationship curve for stress and strain of material copper has also been obtained. The whole process has been numerical simulated by LSDYNA procedure. The results between the experiment and numerical simulation are accordance .It indicates that the dynamic constitutive equations can be researched by SHPB experiment with enough precision. With the primary gas gun, the dynamic properties of copper have been studied under high pressure. Hugoniot curve of metal materials have been obtained, which can be used to study the high- pressure equation of state. The parameters of the state equation have been obtained. The copper is often used to the dynamic test as the standard materials, so the dynamic performance of the copper self is so important.
Highlights
In the dynamic test (Tarver et al, 1997, 1985; Urtiew et al, 1989; Bahl et al, 1985), the copper was as the standard materials
The samples tested have been impacted to the range of plastic nature .The state equation can be investigated via the SHPB experiment on the conditions with high load rate
The results between the experiment and numerical simulation are accordance (Fig. 9 and 10). It indicates that the dynamic constitutive equations can be researched by SHPB experiment with enough precision
Summary
In the dynamic test (Tarver et al, 1997, 1985; Urtiew et al, 1989; Bahl et al, 1985), the copper was as the standard materials. The dynamic performance measurement of Materials is the main application of SHPB and agas gun devices. The rate of SHPB test shells are usually 50 m/s below, While the gas gun for high-speed collisions. The primary use of the SHPB experimental technique is the dynamic mechanical property test of materials. The whole process of the experiment are few numerical simulated in the last research with state equations. The relationship between the experiment and numerical simulation has been obtained. Earthquake Research Center of Guangzhou University, introduced a gas gun and SHPB equipments. In order to test the projectile velocity and the shock wave speed of the materials, self-made equipment is made to measure the pulse velocity. Self-made pulse velocity equipment is used to the experiments of the gas gun .The impact adiabatic curves of copper have been obtained.
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