基于生死单元法的双辊铸轧过程热-力耦合数值模拟

中国机械工程 ›› 2015, Vol. 26 ›› Issue (11): 1503-1508.

基于生死单元法的双辊铸轧过程热-力耦合数值模拟

黄华贵1,2;刘文文1,2;王巍2;杜凤山1,2

1.国家冷轧板带装备及工艺工程技术研究中心，秦皇岛,066004
2.燕山大学，秦皇岛,066004

出版日期:2015-06-10 发布日期:2015-06-05
基金资助:
国家自然科学基金资助项目(51474189)；河北省自然科学基金资助项目（E2013203377）

Thermal-mechanical Coupled Modelling and Numerical Simulation for Twin-roller Casting Process with Technique of Deactivate and Reactivate Element

Huang Huagui1,2;Liu Wenwen1,2;Wang Wei2;Du Fengshan1,2

1.National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Qinhuangdao,Hebei,066004
2.Yanshan University,Qinhuangdao,Hebei,066004

Online:2015-06-10 Published:2015-06-05
Supported by:
National Natural Science Foundation of China（No. 51474189）;Hebei Provincial Natural Science Foundation of China（No. E2013203377）

摘要/Abstract

摘要：

以二辊160mm×150mm立式铝带实验铸轧机为对象，基于MSC.Marc商用有限元软件及其二次开发接口，引入纯铝固-液两相材料本构模型和界面压力热阻数学模型，建立了双辊铸轧过程热-力耦合非线性有限元模型。采用生死单元法模拟铝液的连续浇入，解决了辊套和铸轧区铝带材间的连续耦合传热问题。通过数值模拟，给出了铸轧速度、浇铸温度、熔池高度等因素对KISS点位置和辊面温度时间历程的影响规律，并对典型工况温度模拟结果进行了实验验证。

关键词: 双辊铸轧, 温度场, 有限元法, 生死单元法, 数值模拟

Abstract:

Aiming at the 160mm×150mm vertical type experimental twin-rollers continuous caster, a thermal-mechanical coupled FEM model of twin-roller casting process was established with MSC.Marc and its' secondary development interface based on the solid-liquid two phases constitutive model of pure aluminum and the thermal resistance model considering the contact pressure. The technique of deactivate and reactivate element method was used to simulate the continuous casting of aluminums liquid, and the problem of coupled heat transmission between the cast roll shell and aluminum strip in the cast rolling area was therefore resolved. From the simulation results, the influences of casting speed, casting temperature, the height of cast rolling area on the position of KISS point and the time history of temperature on the roll surface were presented. An twin-roller casting experiment was carried out, and the numerical simulation results are in good agreements with the experimental data.

Key words: twin-roller casting, temperature field, finite element method(FEM), deactivate and reactivate element method, numerical simulation

中图分类号:

黄华贵, 刘文文, 王巍, 杜凤山, . 基于生死单元法的双辊铸轧过程热-力耦合数值模拟[J]. 中国机械工程, 2015, 26(11): 1503-1508.

Huang Huagui, Liu Wenwen, Wang Wei, Du Fengshan, . Thermal-mechanical Coupled Modelling and Numerical Simulation for Twin-roller Casting Process with Technique of Deactivate and Reactivate Element[J]. China Mechanical Engineering, 2015, 26(11): 1503-1508.

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