Dynamic response test and analysis of a typical aviation pipeline

Based on experiments and calculations, the characteristics of a typical aviation pipeline were analyzed. Acceleration excitation experiments of the pipeline were carried out by shaking table, and the dynamic response values at a specific spot of the pipeline were gotten. Considering the additional mass caused by acceleration sensor, based on harmonic response calculations between 100Hz and 1000Hz, the response calculation values were obtained, and the calculations were compared with tests. Respectively, the calculations were analyzed when the elastic modulus, density and damping ratio changed. The results show that the changes of elastic modulus and density are contrast to the influence of vibration responses. The influence extent depends on the relative position of the excitation frequencies to mode frequencies; there is an extremum within excitation frequency range. Damping ratio has little effect on the mode frequencies; it affects mainly the amplitude.