This application discloses a method, apparatus, equipment, and medium for calculating the dynamic response and sensitivity of a nonlinear rotor
system. The method includes the following steps: S1, based on the structural characteristics of the nonlinear rotor
system, performing dynamic modeling of the nonlinear rotor
system and establishing the
equations of motion for the nonlinear rotor system; S2, establishing the hypercomplex form of the
equations of motion for the nonlinear rotor system to obtain the hypercomplex
equations of motion for the nonlinear rotor system, using
complex matrix expression, and expanding the dimension of the
complex matrix equations of motion for the nonlinear rotor system to convert them into equivalent real matrix equations; S3, solving the established hypercomplex equations of motion for the nonlinear rotor system, extracting the real and imaginary parts of the calculation results, and obtaining the system response and corresponding sensitivities of each order. This application achieves automatic updating and solving of the Jacobian matrix during the
iteration process, ensuring the accuracy of the calculation results, and can simultaneously calculate the response and dynamic
response sensitivity of the nonlinear rotor system, resulting in high computational efficiency.