To investigate the dynamic tensile properties of the soft materials with low strength and low wave impedance, an improved SHTB facility was proposed. The specially designed hollow aluminum tubes were used as the incident bar and transmission bar in the proposed facility. Some key affecting issues in the facility were discussed, and the corresponding solutions were presented. A number of cylinder specimens made of butyl cyanide rubber were tested with this improved SHTB facility. The stress wave curve of the butyl cyanide rubber under direct tension was successfully obtained, and the typical stress-strain curve of this material at a high strain rate of 240/s was calculated. It is proved that the proposed SHTB facility is precise enough to measure the dynamic tensile mechanical properties of the soft material, and it has advantages of convenient operation and good reproducibility.
Key words
Direct tension
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SHTB /
Soft material /
Strain rate
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