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- W4367299342 abstract "The main purpose of this work is to build a JH-Ⅱ constitutive model of annealed glass under different strain rates and verify its accuracy. Therefore, in this paper, experiments which were carried out on annealed glass samples with the size of 15 mm × 15 mm and numerical simulations are used to investigate the parameters of this brittle material. The tensile strength of the material obtained by split test is 53.688 MPa, because the failure of annealed glass material is controlled by its tensile strength. The compressive strength of 373.074 MPa and elastic modulus E = 77.89 GPa were obtained by quasi-static compression test. Dynamic compression tests of annealed glass at different loading rates were carried out to study the influence of strain rate effect. At the same time, scanning electron microscopy (SEM) technology is used to scan the experimental results and reveal the failure mechanism of annealed glass from the microscopic level. Finally, the model parameters were derived by combining with the literature data. The material model is applied to the numerical simulation of dynamic compression tests of annealed glass. In the dynamic loading of annealed glass, the results of the numerical simulation using the material parameters are basically consistent with the experimental results, including the dynamic damage process and stress–strain relation. In the experiment and numerical simulation, the error of the ultimate strength of the material under different loading strain rates is within 20%. Based on the clear evidence above, it can be concluded that the dynamic failure simulation process of annealed glass using the JH-Ⅱ model in this paper is effective and accurate. It is worth noting that although this experiment was only conducted on small-scale samples suitable for this study, the parameters still have great applicability. And it can provide reference for parameter derivation method." @default.
- W4367299342 created "2023-04-29" @default.
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- W4367299342 date "2023-07-01" @default.
- W4367299342 modified "2023-10-16" @default.
- W4367299342 title "Johnson–Holmquist-II model of annealed glass and its verification in dynamic compression test" @default.
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- W4367299342 doi "https://doi.org/10.1016/j.istruc.2023.04.082" @default.
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