摘要
文章以有限元理论为基础,采用SolidWorks软件建立了发生破坏的离心风机叶轮结构数学计算模型。应用有限元法利用ANSYS软件详细对比分析了在该工作转速下叶轮发生经常性破坏的原因,求出了在该工作转速下叶轮的应力、变形情况。在此基础上,提出了增加叶轮刚度和强度的措施:包括改变叶片的形式、在电机功率允许的条件下增加叶片厚度及更换叶片材料,有效提高了叶轮的安全系数,为实现风机临界机号的突破提供了设计理论依据。
Based on the finite element theory,the mathematical calculation model of centrifugal fan impeller structure is established using SolidWorks software.Using finite element method and ANSYS software,the causes of frequent failure of impeller at this working speed are compared and analyzed in detail,and the stress and deformation of impeller at this working speed are obtained.On this basis,the measures to increase the stiffness and strength of the impeller are put forward,including changing the form of the blade,increasing the thickness of the blade and replacing the blade material under the conditions permitted by the power of the motor,and effectively improving the safety factor of the impeller.It provides a theoretical basis for the design of the breakthrough of the critical machine number of the fan.
出处
《科技创新与应用》
2019年第9期13-15,共3页
Technology Innovation and Application
关键词
离心风机叶轮
刚度
强度
有限元
centrifugal fan impeller
stiffness
strength
finite element method
