连铸结晶器内铸坯温度场和应力场耦合过程数值模拟

针对碳钢在连铸结晶器内的凝固过程，考虑坯和铜板间接触状态，建立了完全热力耦合的二维热－弹塑性有限元模型，利用ＭＡＲＣ商用软件包在微机上求解，模拟出了连铸结晶器区域热和力学状态，特别是铸坯和结晶器壁界面状态，包括铸坯表面温度，界面热流和气隙分布规律等，本模拟工作可以为优势结晶器锥度，开发高拉速曲面结晶器提供理论依据和技术基础。

Numerical Simulation of the Coupling Phenomenon between Thermal and Mechanical Fields of Billet in Continuous Casting Mold

Based on the solidificaton process of carbon stcel in continuous casting mold, and considerin the colltact behavior between billet and mold, a fully thermomechancally coupled 2D transient thermo-elastoplastic FEM model is established. The model is thelemented with MAR software on PC computer, and the thermal and mechanical states in continuous casting mold are obtained, especially including the interfcial states between shell and mold, such as billet surface temperature ,interfacial heat flux and the law of gap formation. This analytcal work can provide theoretical bases for optimizing mold taper and developing high-speed casting mold with coninuously changing taper.