sis 18: e14

Research Article

Dynamic constitutive analysis of aluminum alloy materials commonly used in railway vehicles big data and its application in LS-DYNA

Download16 downloads
  • @ARTICLE{10.4108/eai.28-9-2021.171169,
        author={Juxing Liang and Jia Sun and Wei Wei and Rashid Ali Laghari},
        title={Dynamic constitutive analysis of aluminum alloy materials commonly used in railway vehicles big data and  its application in LS-DYNA},
        journal={EAI Endorsed Transactions on Scalable Information Systems: Online First},
        volume={},
        number={},
        publisher={EAI},
        journal_a={SIS},
        year={2021},
        month={9},
        keywords={big data, Dynamic constitutive model, Aluminum alloy for vehicle, Anti-climbing device dropping hammer impact test},
        doi={10.4108/eai.28-9-2021.171169}
    }
    
  • Juxing Liang
    Jia Sun
    Wei Wei
    Rashid Ali Laghari
    Year: 2021
    Dynamic constitutive analysis of aluminum alloy materials commonly used in railway vehicles big data and its application in LS-DYNA
    SIS
    EAI
    DOI: 10.4108/eai.28-9-2021.171169
Juxing Liang1,*, Jia Sun1, Wei Wei2, Rashid Ali Laghari3
  • 1: CRRC Nanjing Puzhen Co., Ltd. Nanjing 210000 China
  • 2: School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001 China
  • 3: College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
*Contact email: juxxi741@126.com

Abstract

The mechanical test for the three commonly used aluminum alloy materials (6005A-T6, 6008-T6 and 6082-T6) for rail vehicle big data are carried at different temperatures and different strain rates in this study. It can be seen that there are significant difference mechanical properties for these aluminum alloy. The main differences between them are the sensitivity of the strain rate and temperature. 6008-T6 and 6005A-T6 alloys have lower sensitivity to strain rate, while 6082-T6 alloy has higher sensitivity to strain rate and temperature. Based on the experimental data, the two commonly used dynamic material models of LS-DYNA, the Cowper-Symonds constitutive model and the Johnson-Cook constitutive model, are fitted. And then the two constitutive models are verified and compared by the dropping hammer impact test of the anti-climbing device. The results show that the Cowper-Symonds constitutive model has higher accuracy.