辊涂试验装备的转子临界转速计算与分析  

Calculation and analysis of critical rotor speeds for roller coating test equipment

作　　者：杨克航 吕宏展[1] 白涛[1] 王君政 YANG Kehang;LYU Hongzhan;BAI Tao;WANG Junzheng(College of Mechanical Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学机械工程学院,上海201620

出　　处：《东华大学学报（自然科学版）》2022年第2期63-68,共6页Journal of Donghua University(Natural Science)

基　　金：上海市自然科学基金(20ZR1401300)。

摘　　要：为确保辊涂装备在高速涂敷过程中保持稳定运行,研究辊涂试验装备中转子运行过程中的振动问题。采用解析法和有限元分析法计算转子的临界转速,并对极限工作转速下转子的固有频率和振型进行求解。由于辊涂转子由多种材料组成,在现有方法的基础上提出一种面向主体为钢、表层为橡胶的辊涂转子临界转速计算方法,对辊涂转子的临界转速进行求解与分析。结果表明,所设计的辊涂转子运行的最高转速远低于其一阶临界转速,避开了装备转子转速的共振区;面对多种材料复合而成的复杂转子,改进后的解析法可以用于初步判断设计的合理性,而有限元法可以更加直观地确定方案的合理性。To ensure the stable operation of roller coating equipment during high-speed coating process,the vibration problem during the operation of the rotor is studied.The critical rotor speed was calculated by the analytical method and the finite element analysis method,and the inherent frequency and vibration pattern of the rotor at the limit working speed were solved.As the roller coating rotor was composed of various materials,the critical speed calculation method for the roller coating rotor with the main body of steel and the surface layer of rubber was proposed on the basis of the existing methods,and the critical speed of the rotor was solved and analyzed.The results show that the maximum speed of the designed roller coating rotor is much lower than its first-order critical speed,avoiding the resonance zone of the equipment rotor speed.In the face of complex rotors made of multiple materials,the improved analytical method can be used to initially judge the rationality of the design,while the finite element method can more intuitively determine the rationality of the scheme.

关 键 词：辊涂装备 转子 临界转速 解析法 有限元分析 

分 类 号：TH113.1[机械工程—机械设计及理论]