Computer aided dynamic design of rotating shafts

摘要: Abstract A numerical method to calculate the critical speeds of a rotating shaft is discussed. First eigenvalues system are determined. This determination involves inversion matrices where elements result subtraction very large numbers so that results inaccurate and unpredictable. paper presents circumvent this problem by introducing delta matrices. After obtaining correct eigenvalues, determine eigenmodes presented. The takes in account effect bearing stiffness also allows find translatory conical whirl speeds.