| 引用本文: | 李博,张清东,张晓峰.非对称轧制力能参数与带钢张应力分布规律[J].哈尔滨工业大学学报,2014,46(9):68.DOI:10.11918/j.issn.0367-6234.2014.09.012 |
| LI Bo,ZHANG Qingdong,ZHANG Xiaofeng.Rolling parameters and strip tensile stress distribution of asymmetrical rolling process[J].Journal of Harbin Institute of Technology,2014,46(9):68.DOI:10.11918/j.issn.0367-6234.2014.09.012 |
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| 摘要: |
| 为深入了解带钢轧制过程中非对称因素对轧制力能参数与带钢张应力分布的影响,应用ABAQUS非线性有限元软件对轧制过程进行二维建模及仿真分析,以轧辊驱动方式非对称、上下工作辊与带钢间接触摩擦润滑条件非对称以及存在异步轧制等3种非对称因素作为研究对象,计算并分析上述非对称因素及其程度对于轧后带钢内部张应力分布、轧制力以及轧制扭矩的影响规律,进而定量分析与比较3种非对称轧制因素对于轧制过程中的力能参数和厚向张应力分布规律的影响程度. 仿真计算表明：3种非对称轧制状态都会导致轧后带钢厚向张应力分布的不对称；3种非对称轧制状态都会明显改变轧制过程力能参数大小；与相应对称轧制状态相比,有些非对称因素可以不同程度地降低轧制力和轧制扭矩. 轧制过程中的非对称因素从不同的角度来分析,是利弊共存的. |
| 关键词: 平整轧制 非对称 张应力 有限元 翘曲 |
| DOI：10.11918/j.issn.0367-6234.2014.09.012 |
| 分类号:TG335.5 |
| 基金项目:国家自然科学基金资助项目 (51075031). |
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| Rolling parameters and strip tensile stress distribution of asymmetrical rolling process |
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LI Bo, ZHANG Qingdong, ZHANG Xiaofeng
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(School of Mechanical Engineering, University of Science and Technology Beijing, 100083 Beijing, China)
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| Abstract: |
| Two-dimensional rolling process is modeled and analyzed by nonlinear finite element software called ABAQUS for understanding the law of changing of rolling parameters and strip tensile stress distribution in asymmetrical rolling process. There are three asymmetry factors about rolling process, drive mode, contact friction lubrication conditions between work roll and strip, asynchronous rolling mode. The effect of the asymmetry factors on the tensile stress distribution of strip, roll force and roll torque is analyzed. The effect of the asymmetry factors on the shape of strip and rolling process is compared and assessed. Simulation results show that all the asymmetry factors can make the tensile stress distribution in thickness direction of strip asymmetrical and change the mechanics parameter of temper rolling process obviously. Compared with the corresponding symmetry rolling process, some asymmetry factors can reduce the roll force and roll torque in different degree. Therefore, the advantages and disadvantages of asymmetric rolling process factors both exist from different perspective. |
| Key words: temper rolling asymmetry tensile stress FEM warp |
