摘要
对板带钢温轧过程的轧制力计算方法进行研究,建立了基于非定值变形抗力的轧制力计算模型。将变形区接触弧离散成微段单元,建立了各分段微单元关于变形量和变形速率的计算模型,确定了微段变形抗力。在卡尔曼平衡微分方程基础上,以弦代弧计算,建立了各微段的单位轧制压力。采用ANSYS/LS-DYNA有限元对温轧变形过程进行了仿真模拟,结果表明,所建立的温轧轧制力模型精度较高,计算结果比现有模型的计算结果更为准确。
For calculating deformation resistance in the warm rolling of plate steel, a new rolling force model was proposed based on non-constant value of deformation resistance. Contact arc of deformation zone was discretized into micro-segment unit, and the deformation resistance model of segmented micro cell about deformation and deformation rate was established, unit roiling pressure of segmentation unit was calculated that unit arc replaced by line based on Karlman balance differential equations. Deformation process of warm-rolling was simulated using ANSYS/LS-DYNA tinite element. The comparison of the two calculation results indicates that the new model has high accuracy and is more conforming to actual production.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2013年第15期2114-2118,共5页
China Mechanical Engineering
基金
国家科技支撑计划资助项目(2011BAF15B01)
国家科技重大专项(2011ZX04002-101)
河北省科技计划资助项目(10212101D)
河北省杰出青年科学基金资助项目(E2011203002)
关键词
温轧
轧制压力
变形抗力
数学模型
板带
warm-rolling
rolling pressure
deformation resistance
mathematical model
platesteel
