【摘要】 为研究不同硬化和断裂模型对汽车材料仿真精度的影响，设计并进行了DP590板材在多种应力状态下的材料级别力学试验。根据试验结果标定了路德维克（Ludwik）、斯威夫特（Swift）、沃斯（Voce）、霍克特-谢尔比（H-S）、斯威夫特-霍克特谢尔比（S-HS）5种硬化模型和修正摩尔库仑（MMC）、损伤起始和演化模型（DIEM）、约翰逊-库克（J-C）3种断裂模型。使用上述模型进行了试样级仿真和防撞梁落锤试验及仿真。对比结果表明，S-HS硬化模型和MMC断裂模型对于材料的变形行为和断裂行为的预测结果最精确。结合其他研究成果，推荐使用S-HS硬化模型结合MMC断裂模型预测高强钢板材塑性变形和断裂行为。更多还原

【Abstract】 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 SHS hardening model combined with the MMC fracture model to predict the plastic deformation and fracture behavior of high-strength steel plates.更多还原