基于JSTAMP/NV的汽车B柱热冲压仿真分析
|
摘要
汽车B柱对其安全性、可靠性影响较大。为了获得力学性能优良的汽车B柱,对某型汽车B柱的热冲压工艺进行了分析。运用专业热冲压仿真软件JSTAMP/NV建立了有限元仿真模型,对其温度、等效应变、变形及硬度进行了仿真分析,并用试验进行了验证。结果表明:汽车B柱热冲压过程中,模具、板坯温度分布不同,不同部位等效应变及硬度不同,在复杂结构及突变处易产生缩颈等不良现象;试验验证了仿真分析的正确性。
The automobile B-pillar has great influence on its safety and reliability. In order to obtain the good mechanical properties of the B-pillar,the hot stamping process of a certain type of automobile B-pillar was analyzed. The finite element simulation model was established by using the professional hot stamping simulation software JSTAMP/NV. The temperature,equivalent strain, deformation and hardness were simulated and analyzed. And the test was carried out. The results show that the temperature distribution of die and blank is different, and the equivalent strain and hardness are different in different parts during hot stamping process. It is easy to produce some bad phenomena such as neck locking in complex structures and sudden changes. The correctness of the simulation analysis is verified by the experiment.
The automobile B-pillar has great influence on its safety and reliability. In order to obtain the good mechanical properties of the B-pillar,the hot stamping process of a certain type of automobile B-pillar was analyzed. The finite element simulation model was established by using the professional hot stamping simulation software JSTAMP/NV. The temperature,equivalent strain, deformation and hardness were simulated and analyzed. And the test was carried out. The results show that the temperature distribution of die and blank is different, and the equivalent strain and hardness are different in different parts during hot stamping process. It is easy to produce some bad phenomena such as neck locking in complex structures and sudden changes. The correctness of the simulation analysis is verified by the experiment.
引文
[1]张雯,刘佳宁,乔军平,等.锌基镀层超高强度钢板热冲压汽车B柱加强板成形规律研究[J].北京汽车,2018(1):39-42.
[2]孙光辉,韦旺华,蔡幸松,等.基于Dynaform的B柱热成形工艺研究与应用[J].企业科技与发展,2018(1):144-147.
[3]赵运运,李亨,李明,等.汽车B柱高强度钢热冲压工艺[J].锻压技术,2017,42(2):66-71.
[4]赵运运.汽车B柱加强板热成形工艺研究[D].合肥:合肥工业大学,2017:28-46.
[5]宋晓抗,展培培.汽车B柱热冲压模具温度场研究[J].一重技术,2017(6):7-11.
[6]冯晓欣.基于数倌模拟的高强度钢22MnB5热冲压工艺研究[D].长沙:中南林业科技大学,2014:29-58.
[7]王静.汽车B柱注塑成形数值模拟及模具结构改进[J].环球市场,2017(12):103-103.
[8]王洪俊,范海梅.轿车车身零件制造的热成形技术[J].模具制造,2005(4):32-35.
[9]Hu Ping,Ying Liang,Li Ye,et al.Effect of oxide scale on temperature-dependent interfacial heat transfer in hot stamping forming process[J].Journal of Materials Processing Technology,2013,213(9):1475-1483.
[2]孙光辉,韦旺华,蔡幸松,等.基于Dynaform的B柱热成形工艺研究与应用[J].企业科技与发展,2018(1):144-147.
[3]赵运运,李亨,李明,等.汽车B柱高强度钢热冲压工艺[J].锻压技术,2017,42(2):66-71.
[4]赵运运.汽车B柱加强板热成形工艺研究[D].合肥:合肥工业大学,2017:28-46.
[5]宋晓抗,展培培.汽车B柱热冲压模具温度场研究[J].一重技术,2017(6):7-11.
[6]冯晓欣.基于数倌模拟的高强度钢22MnB5热冲压工艺研究[D].长沙:中南林业科技大学,2014:29-58.
[7]王静.汽车B柱注塑成形数值模拟及模具结构改进[J].环球市场,2017(12):103-103.
[8]王洪俊,范海梅.轿车车身零件制造的热成形技术[J].模具制造,2005(4):32-35.
[9]Hu Ping,Ying Liang,Li Ye,et al.Effect of oxide scale on temperature-dependent interfacial heat transfer in hot stamping forming process[J].Journal of Materials Processing Technology,2013,213(9):1475-1483.