127 / 2021-06-18 14:22:12
The mechanical constitutive model of the armature material of the electromagnetic rail launcher under the pulse discharge condition
electromagnetic rail launcher,least square parameter estimation method,elastic-plastic effect,strain rate effect
终稿
Peipei Du / Naval University of Engineering
During the sliding electrical contact between the armature and the rail of the electromagnetic rail launcher, the armature material has severe wear and failure. In order to accurately predict the force and failure process of the armature, the Zwick-HTM5020 high-speed tensile testing machine was used to carry out the mechanical performance test of the armature material under the strain rate of 0.01 s-1, 0.1 s-1, 1 s-1, 10 s-1, 100 s-1, 1000s-1. The Johnson cook material model, which can characterize the elastic-plastic effect and strain rate effect of materials, is established by using the least square parameter estimation method. This has important application value for the limit design of the armature.
重要日期
  • 会议日期

    07月01日

    2021

    07月04日

    2021

  • 07月03日 2021

    报告提交截止日期

  • 11月03日 2021

    注册截止日期

主办单位
Huazhong University of Science and Technology, China
协办单位
University of Sydney, Australia
Southwest Jiaotong University, China
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