薄带钢拉矫机浪形矫平过程机理建模及有限元验证

发布时间：2018-03-26 07:23

本文选题：拉弯矫直　切入点：塑性变形　出处：《机械工程学报》2015年02期

【摘要】：采用弹塑性力学分析方法,针对拉伸弯曲矫直机用于对具有初始位移缺陷(瓢曲浪形)薄带钢的浪形矫平过程进行机理建模,推导建立以带钢规格材质及初始浪形参数、拉矫工艺参数和拉矫机相关设备参数为自变量的拉矫变形过程浪形矫平功效的解析预测模型。通过定义拉矫过程中带钢宽向进入塑性变形的屈服区域边界位置作为中间变量,以及依次分别建立各项输入条件与屈服位置的关系、屈服位置与工艺条件的关系,建立浪形矫平预测模型的多变量微分方程组。为了验证该机理模型的正确性,分析初始浪形、材料强度、带钢尺寸等初始条件以及弯曲辊半径、拉矫张力等工艺条件对拉矫机对于带钢浪形的矫平改善能力的影响,并应用ABAQUS软件另行建立同样条件下薄带钢拉弯矫直过程的有限元模型,经计算并对比计算结果,两种方法的结果吻合良好。
[Abstract]:The elastoplastic mechanics analysis method is used to model the mechanism of wave leveling process of thin strip with initial displacement defect (ladle wave shape), and the material of strip steel and initial wave shape parameter are derived. The analytical prediction model of the wave leveling effect in the process of straightening deformation with the independent variables of the process parameters and the related equipment parameters of the straightening machine is established. By defining the boundary position of the wide direction of the strip entering the plastic deformation in the process of drawing and straightening, the intermediate variable is taken as the intermediate variable. In order to verify the correctness of the model, the relationship between the input condition and yield position, the relationship between yield position and process condition, and the multivariable differential equations of wave leveling prediction model are established respectively, and the initial wave shape is analyzed in order to verify the correctness of the model. The influence of the initial conditions such as material strength, strip size, bending roll radius, tension, etc., on the straightening ability of the straightener to straighten the wave shape of the strip, The finite element model of thin strip bending and straightening process under the same condition is established by using ABAQUS software. The results of calculation and comparison show that the results of the two methods are in good agreement with each other.
【作者单位】：北京科技大学机械工程学院;
【基金】：国家自然科学基金(51075031) 中央高校基本科研业务费专项资金(2302011FRF-SD-12-014B)资助项目
【分类号】：TG333.23

【共引文献】