Structural Analysis And Optimization Of The TRB Rolling Mechanism

Scholars at home and abroad have been so familiar with the theoretical research and production application of continuous variable cross-section in differential thickness(abbreviated as TRB plate)so far,however,the research and study on the profile rolling mechanism is rarely included.The rolling mechanism is an important equipment in the TRB plate production line,to a great extent,its rolling quality and speed determine the quality,efficiency and material utilization ratio of products.At the same time,with more and more diversified demand for the shape of rolled parts,the quality requirements of rolled parts are more stringent,which also puts forward higher requirements for the production of rolling parts equipment technology and equipment accuracy.This paper starts from the research results of Chongqing Natural Science Foundation on TRB plate profile rolling device,based on the research results of previous scholars,using large finite element analysis software ANSYS-Workbench and three-dimensional modeling software Solid Works as the platform to carry out static and dynamic numerical analysis,topology optimization and transient thermal analysis of rolling mechanism,extract and analyze the result cloud picture and curve,put forward the optimization and improvement measures of the structure of profile rolling mechanism.This research will provide theoretical guidance for the design and structural improvement of the profile rolling mechanism in the future.It has engineering application value for improving the rolling quality and guiding the actual production,and provides theoretical support for the practical application of the copying rolling device.The main contents of this paper are as follows:(1)To study the stiffness and strength change of rolling device and key parts under static and rolling condition,the static and dynamic numerical analysis of rolling mechanism is carried out by using ANSYS-Workbench combined Solid Works.The finite element method is introduced firstly,the nonlinear statics analysis method and modal analysis method are described in detail,and then the three-dimensional model of rolling device is established by Solid Works and introduced into Workbench.According to the analysis,even under the condition of maximum rolling force,the whole rolling unit and its parts can meet the requirements of strength and stiffness,but the whole structure is rigid,but the contact surface of punch and slider will have large local concentrated stress,and the deformation of the structure is small,and the mechanism needs to be further improved.(2)The static and dynamic numerical analysis of rolling mechanism is carried out by using ANSYS-Workbench combined Solid Works to check the strength and stiffness of the parts or whole rolling device structures and understand the vibration characteristics of the rolling mechanism itself.This paper introduces the finite element method and describes the nonlinear statics analysis method and modal analysis method,then uses the Solid Works to establish the three-dimensional model of rolling device and imports it into the Workbench for analysis.Extracting stress,deformation and mode of vibration result pictures and the results indicates that the strength and stiffness meet the requirements,the overall structure rigidity is better,but the measure design is so conservative that the structure need to be optimized.(3)To study the stress and deformation TRB the whole rolling mechanism and parts under the working condition(high temperature)under the maximum rolling force condition,this paper studies the curve of physical properties parameters with temperature of structural steel at high temperature,analyzes the method of roll heating and the cause of failure,elaborates the method of transient thermal analysis and the method of thermo-solid coupling analysis,and studies the heating process and heating speed of roll and the rolling mechanism and parts at high temperature by means of transient thermal analysis and indirect thermosetting coupling analysis in the working area of roll under the condition of maximum rolling force using ANSYS-Workbench combination Solid Works,By comparing the results of stress and deformation in working state(high temperature)and non-working state(normal temperature),it can be concluded that "the overall material of the TRB rolling unit is selected reasonably,no obvious strain occurs at high temperature,and the stiffness and strength are better,especially the roll;TRB the premise of the same working condition,the stress and deformation of the whole rolling mechanism and parts are proportional to the temperature,the higher the temperature,the greater the stress and deformation".