SIMILARITY LAWS AND SCALING OF PENETRATION TESTS |
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Authors: | JIANG Dong HUANG Ruiyuany YU Daojian ZHOU Gang |
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Institution: | 1. Beijing Institute of Space Long March Vehicle, Beijing 100076, China;
2. University of Science and Technology of China, Hefei 230026, China;
3. Northwest Institute of Nuclear Technology, Xi'an 710000, China |
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Abstract: | In this paper, the response of the spherical cavity expansion theory is used to analyze the penetration of the target under the impact of the missile, and a general form of the penetration similarity is established based on the dimension theory. The analysis of the existing experimental data of the projectile shows that the non-dimensional penetration depth curve is deflected and shifted for difierent penetration speeds. With the strain-rate efiect and the damage evolution of the material, the geometric similarity laws do not hold true for the brittle materials such as the concretes. It is necessary to introduce a correction of the geometric similarity law to account for the strain-rate efiect and the damage evolution of the material. |
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Keywords: | penetration|similarity laws|scaling |
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