期刊文献+

模具温度和凸模速度对超高强钢热冲压成形的影响(英文) 被引量:4

Effect of tool temperature and punch speed on hot stamping of ultra high strength steel
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摘要 高强钢板热冲压作为一种创新工艺逐渐被用于汽车领域制造超高强度的零件。实际上,由于在热冲压过程中材料表现出高度非线性的弹塑性以及热固响应行为,实验很难全面考察热成形过程。因此,有必要建立超高强钢板热冲压三维弹塑性热固耦合的有限元模型。同时,在高温拉伸试验的基础上,测试超高强钢的高温力学性能,并建立和应变、应变速率、温度相关的材料本构模型。此外,采用热冲压试验结合数值模拟研究模具温度和凸模速度对方盒形件超高强钢热冲压的影响规律,在测试热成形零件性能的基础上,得到优化的模具温度和冲压速度。 高强钢板热冲压作为一种创新工艺逐渐被用于汽车领域制造超高强度的零件。实际上,由于在热冲压过程中材料表现出高度非线性的弹塑性以及热固响应行为,实验很难全面考察热成形过程。因此,有必要建立超高强钢板热冲压三维弹塑性热固耦合的有限元模型。同时,在高温拉伸试验的基础上,测试超高强钢的高温力学性能,并建立和应变、应变速率、温度相关的材料本构模型。此外,采用热冲压试验结合数值模拟研究模具温度和凸模速度对方盒形件超高强钢热冲压的影响规律,在测试热成形零件性能的基础上,得到优化的模具温度和冲压速度。
出处 《中国有色金属学会会刊:英文版》 CSCD 2012年第S2期534-541,共8页 Transactions of Nonferrous Metals Society of China
基金 Project (50905041) supported by the National Natural Science Foundation of China Project (20092302120079) supported by the Specialized Research Fund for the Doctroal Program of Higer Education, China Project (09JD18) supported by Key Laboratory of Ministry Education for Conveyance and Equipment, East China Jiaotong University, China
关键词 热冲压 超高强钢板 有限元模型 热固耦合 模具温度 凸模速度 hot stamping ultra high strength steel FEM thermo-mechanical coupling tool temperature punch speed
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参考文献14

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二级参考文献14

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