重型转子加工用中心架整体结构力学分析

重型汽轮机转子加工用中心架工作时承受巨大的载荷,须对其整体结构进行力学分析来验证设计的可靠性。本文采用有限元软件ANSYS对中心架整体结构进行了静力学分析和模态分析,确定了车削工况和铣削工况下中心架上的应力分布、变形情况,以及中心架壳体结构的固有频率、振型等动力学参数。结果表明:中心架结构有足够的刚度、强度和振动稳定性,可以满足重型汽轮机转子加工的要求。

Mechanical Analysis of Center Rest for Heavy Rotor Fabrication

The center rest for heavy steam turbine rotor fabrication works under large load,so mechanical analysis of the total structure of the center rest is performed to verify the reliability of the designing.Finite element method software ANSYS is used to carry out the statics analysis and modal calculation for the center rest structure,which gives the stress distribution,deformation condition,natural frequencies and mode shapes of the center rest under different working conditions.The results prove:the center rest structure has enough stiffness,strength and vabration stability to satisfy the fabrication requirement for the heavy steam turbine rotor.