• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Finite elements in analysis & design >Numerical simulation of hot stamping by partition heating based on advanced constitutive modelling of 22MnB5 behaviour
【24h】

Numerical simulation of hot stamping by partition heating based on advanced constitutive modelling of 22MnB5 behaviour

机译：Numerical simulation of hot stamping by partition heating based on advanced constitutive modelling of 22MnB5 behaviour

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Hot stamping of 22MnB5 sheets by partition heating may represent an effective method to produce parts of the car body-in-while with improved collision performances thanks to proper tailored microstructural characteristics. In accordance with the heating and forming thermo-mechanical features of hot stamping using partition heating, uniaxial tensile tests at varying temperature and strain rate were carried out on a Gleeble (TM) 3500 thermomechanical simulator applying different heating temperatures ranging from 700 degrees C to 900 degrees C. The effect of the heating temperature, deformation temperature, and strain rate on the flow stress was analysed, showing that the peak flow stress increased at increasing volume fraction of austenite. An improved unified viscoplastic constitutive model taking into account the austenitization degree was developed and the related material constants identified making use of a genetic algorithm-based optimization tool. The established constitutive model was implemented into the FE-based software Abaqus (TM) to simulate the hot stamping process of a cup-shaped part using partition heating. The comparison between the numerical and experimental outcomes in terms of thickness distribution proved the accuracy of the 22MnB5 constitutive model taking into account the austenitization degree.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号