Accounting for Geometric Scatter within Manufacturing Tolerances on the Natural Frequency Values of Compressor Rotor Blade during Its Detuning from Dangerous Resonances

Аннотация

Computational research is carried out of the effect of geometric scatter within the manufacturing tolerances on the natural frequency values of a low pressure compressor blade. The first stage blade natural frequencies are estimated and compared considering various distribution laws of dimensions within the manufacturing tolerances. The joint approach to the blade natural frequency optimization and robust design is presented. The obtained blade design is less sensitive to geometric dimension scattering compared to the original design.