Two thermomechanical coupled elastic-plastic finite element （FE） models were developed for predicting the 12-pass continuous rolling process of GCrl 5 rod and wire steel. The distances between stands in the proposed...Two thermomechanical coupled elastic-plastic finite element （FE） models were developed for predicting the 12-pass continuous rolling process of GCrl 5 rod and wire steel. The distances between stands in the proposed models were set according to the actual values, and the billets were shortened in the models to reduce the calculation time. To keep the continuity of simulation, a technique was developed to transfer temperature data between the meshes of different models in terms of nodal parameters by interpolation functions. The different process variables related to the rolling process, such as temperature, total equivalent plastic strain, equivalent plastic strain rate, and contact friction force, were analyzed. Also, the proposed models were applied to analyze the reason for the occurrence of an excessive spread in width. Meanwhile, it was also utilized to assess the influence of the roll diameter change on the simulated results such as temperature and rolling force. The simulated results of temperature are found to agree well with the measured results.展开更多
This paper discusses the application of several techniques involved in the development of the 3D finite element (FE) models of rod and wire continuous rolling process.The FE models are implemented into the FE-program ...This paper discusses the application of several techniques involved in the development of the 3D finite element (FE) models of rod and wire continuous rolling process.The FE models are implemented into the FE-program MSC.Marc and used to investigate the thermal and mechanical behavior of billet during the rolling process.All nonlinear equations included in the models are solved by the static and dynamic procedures,respectively.Data transfer technique is proposed to keep the continuity of simulation results.And the computational time of static procedure is significantly reduced by using a rigid pushing body.In all models,the constant time step method and the auto time step method are respectively used to define time step for the solution of equations.Simulation results of the models with different time step methods are compared.And comparison between calculated values and measured ones of the temperature at the surface of billet shows the validity of the FE models.展开更多
基金This study was supported by the Excellent Youth and Science & Technology Talent Foundation of Dalian (No.2001-122) and Dong-bei Special Steel Group.
文摘Two thermomechanical coupled elastic-plastic finite element （FE） models were developed for predicting the 12-pass continuous rolling process of GCrl 5 rod and wire steel. The distances between stands in the proposed models were set according to the actual values, and the billets were shortened in the models to reduce the calculation time. To keep the continuity of simulation, a technique was developed to transfer temperature data between the meshes of different models in terms of nodal parameters by interpolation functions. The different process variables related to the rolling process, such as temperature, total equivalent plastic strain, equivalent plastic strain rate, and contact friction force, were analyzed. Also, the proposed models were applied to analyze the reason for the occurrence of an excessive spread in width. Meanwhile, it was also utilized to assess the influence of the roll diameter change on the simulated results such as temperature and rolling force. The simulated results of temperature are found to agree well with the measured results.
基金the financial support received from the Dalian City Government and the Dongbei Special Steel Group Corpo-ration
文摘This paper discusses the application of several techniques involved in the development of the 3D finite element (FE) models of rod and wire continuous rolling process.The FE models are implemented into the FE-program MSC.Marc and used to investigate the thermal and mechanical behavior of billet during the rolling process.All nonlinear equations included in the models are solved by the static and dynamic procedures,respectively.Data transfer technique is proposed to keep the continuity of simulation results.And the computational time of static procedure is significantly reduced by using a rigid pushing body.In all models,the constant time step method and the auto time step method are respectively used to define time step for the solution of equations.Simulation results of the models with different time step methods are compared.And comparison between calculated values and measured ones of the temperature at the surface of billet shows the validity of the FE models.
