摘要
基于接触力学和非线性振动理论,考虑了钢管轧制过程的非线性刚度和阻尼因素,建立了钢管的两自由度非线性耦合振动模型,分析了激励频率和压下量等变化参数对钢管振动的影响。结果表明:随着激励频率的增加,钢管轧制中会出现混沌状态,破坏轧制的稳定性;合理的压下量可以减小钢管振动速度,提高钢管表面质量。
According to the contact mechanics and non-linear vibration theory,and taking the non-linear rigidity and damping factor in the process of steel pipe rolling into account,non-linear coupled vibration model with two freedom degrees is established and the influence of variation parameters such as pump frequency and screw down amount to the steel pipe vibration is analyzed.The result shows that chaos situation will occur during steel pipe rolling to break the stability of rolling along pump frequency is increased,and reasonable screw down amount can reduce the steel pipe vibration velocity to improve the surface quality of steel pipe.
出处
《中国重型装备》
2010年第3期19-22,共4页
CHINA HEAVY EQUIPMENT
关键词
钢管
轧制
压下量
非线性振动
数值分析
steel pipe
rolling
screw down amount
non-linear vibration
value analysis
