Finite Element Analysis on a Newly-Modified Method for the Taylor Impact Test to Measure the Stress-Strain Curve by the Only Single Test Using Pure Aluminum
Abstract
:1. Introduction
2. Experimental Principle
2.1. A Proposition of a Modified Taylor Impact Test
2.2. The Hardening Law to Nonlinear Strain Rate Sensitivity for the Finite Element Simulation
2.3. A Removing Method of the Frictional Effect in Impact Compressive Tests Based on the SHPB Technique
3. Experimental Methods
3.1. Material and Specimen
3.2. Quasi-Static and Impact Compressive Tests at Different Strain Rates and Temperatures
4. Finite Element Simulation of the Modified Taylor Impact Test
5. Results and Discussions
5.1. Compressive Test from Quasi-Static to Impact Range
5.2. Computation of the Modified Taylor Impact Test by FEM
6. Concluding Remarks
- It is possible to obtain a valid stress-strain curve at only one single trial of the Taylor impact test.
- In the Phase 2, the distribution of the axial internal force can be approximated bi-linearly with respect to the axial position of the specimen.
- It can be observed that the axial stress decreases mainly in the region of higher strain.
- The choice of elapsed time during Phase 2 is quite important, in order to obtain the correct stress-strain curve.
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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49.7 | 60.6 | 0.282 | 0.001 | 0.0307 | 1.14 |
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Gao, C.; Iwamoto, T. Finite Element Analysis on a Newly-Modified Method for the Taylor Impact Test to Measure the Stress-Strain Curve by the Only Single Test Using Pure Aluminum. Metals 2018, 8, 642. https://doi.org/10.3390/met8080642
Gao C, Iwamoto T. Finite Element Analysis on a Newly-Modified Method for the Taylor Impact Test to Measure the Stress-Strain Curve by the Only Single Test Using Pure Aluminum. Metals. 2018; 8(8):642. https://doi.org/10.3390/met8080642
Chicago/Turabian StyleGao, Chong, and Takeshi Iwamoto. 2018. "Finite Element Analysis on a Newly-Modified Method for the Taylor Impact Test to Measure the Stress-Strain Curve by the Only Single Test Using Pure Aluminum" Metals 8, no. 8: 642. https://doi.org/10.3390/met8080642