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- W4384298143 abstract "The mechanisms of the strain rate dependence of closed-cell PVC foams under shock were numerically studied based on a cell-based model combined with the Coupled Eulerian-Lagrangian (CEL) method in this paper. The strain rate effect of the base material and the entrapped gas effect were focused. The results show that the strain rate effect of the base material has a significant influence on the stress magnitude in the regions before and after the shock front, and the entrapped gas mainly affects the velocity field. Both the strain rate effect of the base material and the entrapped gas have a notable influence on the strain distribution. Taking PVC foam with a relative density of 0.07 as an example, the strain rate effect of the base material will increase the impact stress by 45% and reduce the impact strain by 0.04. The entrapped gas will reduce the impact strain by 0.18, and its effect on the impact stress can be ignored. Finally, two constitutive laws considering the strain rate effect and entrapped gas effect were proposed and compared for the PVC foam under shock with one based on the Hugoniot relationship and the other based on the D-RPH model." @default.
- W4384298143 created "2023-07-15" @default.
- W4384298143 creator A5020449568 @default.
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- W4384298143 date "2023-07-14" @default.
- W4384298143 modified "2023-09-30" @default.
- W4384298143 title "Strain Rate Sensitivity and Constitutive Law of Closed-Cell PVC Foams under Shock" @default.
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- W4384298143 doi "https://doi.org/10.3390/ma16144995" @default.
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