计及附加质量的热镀锌线沉没辊装置液固耦合振动瞬态响应分析

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (7) : 152-156.

论文

王兴东1，刘灿灿1，李友荣1，汪磊川2

作者信息 +

Liquid-solid coupled transient vibrations for a sink roll device of hot-dip galvanized line with an added mass

WANG Xingdong1, LIU Cancan1 , LI Yourong1, WANG Leichuan2

Author information +

文章历史 +

摘要

浸没于锌液中的沉没辊振动会严重影响带钢的镀层质量，迫切需要开展这类液固耦合振动问题的研究。基于附加质量的理论方法，建立了考虑流场作用的瞬态响应数学模型；进行了在线振动实验研究，结合结构的干湿模态分析结果，确定了附加质量；针对沉没辊结构特征，修正了数学模型的质量矩阵，建立了考虑流场作用的瞬态响应数值分析模型。瞬态模拟计算结果发现模型三个方向的主振频率与实测数据接近，验证了提出的计及附加质量液固耦合振动瞬态响应分析方法的有效性；基于该模型，得到了轴瓦与轴颈接触面等关键区域的瞬态响应。

Abstract

The coating quality of steel strip is seriously influenced by vibration of a sink roll immersed in molten zinc. It is necessary to study a sink roll’s liquid-solid coupled vibration. Based on the theoretical method of added mass, a mathematical model for the roll’s transient vibration responses considering effects of flow field was established. The on-line vibration tests for the roll were conducted. Combining the roll’s wet and dry modal analysis results, the added mass value was determined. According to the structural characteristics of the sink roll, the mass matrix of the mathematical model was modified, the numerical analysis model for the roll’s transient responses considering effects of flow field was established. The results of numerical simulation showed that the principal vibration frequencies in 3 directions of the model are close to the measured data, the effectiveness of the proposed method for liquid-solid coupled transient response analysis of the sink roll with an added mass is verified; based on this model, the transient responses of key regions including the contact surface between bearing and journal are obtained.

导出引用

王兴东1，刘灿灿1，李友荣1，汪磊川2. 计及附加质量的热镀锌线沉没辊装置液固耦合振动瞬态响应分析[J]. 振动与冲击, 2018, 37(7): 152-156

WANG Xingdong1, LIU Cancan1,LI Yourong1, WANG Leichuan2. Liquid-solid coupled transient vibrations for a sink roll device of hot-dip galvanized line with an added mass[J]. Journal of Vibration and Shock, 2018, 37(7): 152-156

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