矩形纺丝箱模态影响因素  

Research on Influence Factors of Mode of Rectangular Spinning Box

作　　者：吴超 董金善[1] 曾子杨 WU Chao;DONG Jinshan;ZENG Ziyang(School of Mechanical and Power Engineering,NanjingTech University,Nanjing,211816,China)

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816

出　　处：《轻工机械》2019年第1期94-97,共4页Light Industry Machinery

摘　　要：针对纺丝箱工作状态下存在的潜在振源,利用ANSYS软件建立矩形纺丝箱的整体有限元模型,运用模态分析理论,通过改变箱体支座的约束方式、内部压力和材料弹性模量等参数,分析比较了前10阶固有频率的变化规律。结果表明:在同一约束方式下,箱体的低阶频率比较相近;在不同的约束方式下,低价频率差距明显,但随着频率阶数的升高频率逐渐趋于一致;内压作用下箱体的变形很小,导致对固有频率的影响很小;材料的弹性模量与结构的刚度有关,随着温度的升高固有频率会下降,且其对高阶固有频率的影响大于低阶固有频率。In view of the potential vibration source in the working state of the spinning box,the finite element model of the rectangular spinning box was established by using ANSYS software.Through the modal analysis theory,the change rules of the first 10 order natural frequencies were analyzed and compared by changing the constraints of the box support,the internal pressure,the elastic modulus of the material and so on.The lower frequency frequency of the box was similar under the same constraint mode;under the different constraint modes,the low frequency frequency gap was obvious,but with the increase of frequency order the frequency gradually tended to be consistent;the deformation of the box was very small under the action of internal pressure,which led to the small influence on the natural frequency;the modulus of elasticity of the material was related to the stiffness of the structure,with the increase of temperature,the natural frequency decreased and its influence on the higher order natural frequency was greater than that of the lower order.

关 键 词：矩形纺丝箱 模态分析 固有频率 约束 内压 ANSYS软件 

分 类 号：TQ340.5[化学工程—化纤工业]