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In order to study the influence of different hardening and fracture models on the simulation accuracy of automotive materials, the material-level mechanical tests of DP590 sheet under various stress states were designed and carried out. According to the test results, 5 hardening models of Ludwik, Swift, Voce, Hockett-Sherby (H-S), Swift-HockettSherby (S-HS) and 3 fracture models of Modified Mohr-Coulomb (MMC), Damage Initiation and Evolution Model (DIEM) and Johnson-Cook (J-C) were calibrated. The above models were applied to conduct specimen-level simulation and anti-collision beam drop weight test and simulation. The comparison results show that the S-HS hardening model and MMC fracture model have the most accurate prediction results for the deformation behavior and fracture behavior of materials. Combined with other research results, it is recommended to utilize the S-HS hardening model combined with the MMC fracture model to predict the plastic deformation and fracture behavior of high-strength steel plates.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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