Dynamic Impact Mechanical Test of Rubber Based on DIC Method
DOI:
https://doi.org/10.54097/cy1s9g57Keywords:
DIC; rubber; strain field; e-SHPB; dynamic impact..Abstract
In order to study the strain field of rubber material in the impact process, the impact test of rubber body was carried out by E-SHPB device. Combined with high-speed photography and DIC technology, the non-contact measurement of rubber materials was carried out, and the obtained data were compared and screened. The impact compression diagram and strain field change cloud diagram of rubber in the impact process were obtained. The test results show that during the dynamic impact process, the strain concentration phenomenon first occurs at the contact area between the rubber body and the incident rod in the early stage of impact. As the stress wave propagates inside the material, the strain concentration phenomenon gradually shifts, and finally tends to the middle area to produce a larger strain concentration. At this time, the rubber body is highly compressed and reaches a critical state of springback.
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