 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 13088 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8125
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| In English (Mech. Solids): | | 4963 |
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| Wencheng Lu, Yiding Wu, Minghui Ma, Yilei Yu, and Guangfa Gao, "Analysis of the Accuracy of Taylor Impact Theory Considering Elastic Wave Effects," Mech. Solids. 60 (1), 295-310 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
1 |
Pages |
295-310 |
| DOI |
10.1134/S0025654424606220 |
| Title |
Analysis of the Accuracy of Taylor Impact Theory Considering Elastic Wave Effects |
| Author(s) |
Wencheng Lu (Nanjing University of Science and Technology, Nanjing, 210094 China)
Yiding Wu (Nanjing University of Science and Technology, Nanjing, 210094 China)
Minghui Ma (Nanjing University of Science and Technology, Nanjing, 210094 China)
Yilei Yu (Nanjing University of Science and Technology, Nanjing, 210094 China)
Guangfa Gao (Nanjing University of Science and Technology, Nanjing, 210094 China, gfgao@ustc.edu.cn) |
| Abstract |
The Taylor rod impact theory can calculate the dynamic yield strength of the projectile by
measuring its length after the test. However, in theoretical analysis, the material of the projectile is
assumed to be an ideal rigid-plastic material, where the elastic modulus tends to infinity. In reality, the
elastic modulus of materials is finite, which, from the perspective of stress wave propagation, inevitably
introduces errors into the results of the Taylor theory. Therefore, to qualitatively investigate the effect
of elastic wave propagation on the calculation results of the Taylor rod impact theory, numerical simulations of the impact process were carried out using the Abaqus finite element analysis software. The
results indicate that when the projectile material is modeled as an ideal elastic-plastic material, the
dynamic yield strength calculated by the Taylor theory increases and approaches the real value as the
elastic modulus increases. On the other hand, as the density increases, the dynamic yield strength calculated by the Taylor theory decreases and stabilizes, with the Taylor theory calculation becoming
more accurate as the density decreases. When the elastic modulus and density change proportionally,
maintaining a fixed wave speed for the elastic waves in the projectile, the dynamic yield strength calculated by the Taylor theory remains nearly constant. Therefore, the wave speed of the elastic wave is
one of the main factors influencing the Taylor rod impact theory. By varying the length-to-diameter
ratio of the projectile, it was found that the calculation error of the Taylor rod impact theory is minimized when the length-to-diameter ratio of the projectile is 3. Thus, when designing a Taylor rod
impact experiment, the length-to-diameter ratio of the cylindrical projectile can be set to 3. Additionally, it can be concluded that the yield strength value calculated using the Taylor rod impact theory is
smaller than the actual value because the momentum conservation equation does not account for the
radial expansion rate of the projectile during plastic deformation. |
| Keywords |
Taylor rod impact, elastic wave effect, ideal elastic-plastic, dynamic yield strength, elastic modulus |
| Received |
07 November 2024 | Revised |
06 January 2025 | Accepted |
11 January 2025 |
| Link to Fulltext |
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