基于有限元和优化的粗轧短行程控制曲线研究

摘要

针对热带钢粗轧段头尾部形状短行程控制SSC（ShortStrokeContr01）问题，提出了数值优化法研究改善头尾形状的SSC曲线。采用编程开发手段，将有限元分析与优化算法相结合，以端部宽度偏差最小为目标，建立了粗轧段SSC曲线数值优化分析系统。通过计算得到了优化迭代过程中短行程曲线和头尾宽度偏差的变化分布，最终给出优化后的SSC曲线和对应的头尾形貌。结果表明，该方法对粗轧段SSC曲线的优化是有效的，能够降低头尾部切损长度，研究成果可用于指导生产实践。%Aiming at short stroke control （SSC） of head and tail shape in rough rolling of hot Strip,nu- merical optimization was used to investigate SSC curve for improving the shapes of head and tail. Through programming development way, finite element analysis was combined with optimization algo- rithm. Afterwards, Taking minimum deviation of head and tail width as objective, numerical optimization system of SSC curve in roughing of hot strip has been established. According to the system, SSC curves and width deviation in iterative process of optimization could be presented. In the end, optimized SSC curves and corresponding profiles of head and tail were obtained. The results show that it is effective to optimization of SSC curve in roughing and could reduce cut loss of head and tail. So, the research works could be used to guide the production practice.